WorldWideScience

Sample records for bauhinia megalandra capaz

  1. Photophysical and photochemical properties of Bauhinia megalandra (Caesalpinaceae) extracts as new PDT photosensitizer

    Science.gov (United States)

    Vargas Tovar, Franklin R.; Rivas, C.; Estrada, O.; Marcano O., Aristides A.; Echevarria, Lorenzo; Diaz, Yrene; Alexander, I.; Rodriguez, L.; Padron, L.; Rivera, I. R.

    2004-10-01

    Recently new photosensitizers, chlorophyll "a and b" derivatives, for photodynamic therapy (PDT) have been presented. It already passed complete pre-clinical investigations. This prompted us to carry out an extensive study of photophysical properties of chlorine derivatives, important both for optimization of their clinic applications and for study of mechanisms of chlorine PDT&. The fresh leaves of Bauhinia megalandra (Caesalpinaceae) were extracted with methanol by percolation, and re-extract with a mixture of methanol-water (1:1), the insoluble fraction was then separated by column chromatography [RP18/hexane-ethylacetate (9:1)] to obtain four fractions named 1 to 4. These compounds were identified by NMR data. We found that 3 and 4 efficiently generates singlet oxygen when irradiated with visible light. Detection of the singlet oxygen was fulfilled by its reaction with histidine and detected by bleaching p-nitrosodimethylaniline under 440 nm irradiation. The quantum yields of singlet oxygen determined by us were 0.088 (1), 0.151 (2), 0.219 (3) and 0.301 (4). We measured absorption and fluorescence spectra of compounds 1 to 4 (Mg-chlorophyll-a, Pheophytin, Mg-chlorophyll-b and chlorophyll-b respectively) in different media and in aqueous solutions of human serum albumin. The association constant of the compounds 1, 2, 3 and 4 in the presence of HSA were estimated. The binding and quenching studies suggest that only 1 and 3 may serve as a useful fluorescence probe for structure/function studies of different chlorophyll binding proteins. No photoinduced binding was observed after irradiation by all the studied compounds in presence of human serum albumin.

  2. PHYTOCHEMICAL STUDY Bauhinia forficata (FABACEAE)

    OpenAIRE

    Simões, Ranggel Carvalho; Almeida, Sheylla Susan Moreira da Silva de

    2015-01-01

    The present study describes the results of preliminary phytochemical screening, Toxicological Artemia salina bioassay and antimicrobial activity in Bauhinia forficata link, known for popularly Pata-de-vaca. The Bauhinia is a pantropical genus, its species are used in the treatment of several infections and diseases, especially diabetes. The phytochemical prospection used crude ethanolic extract (EBE) of the stem bark of Bauhinia forficata Link; the toxicity analyses in Artemia salina for give...

  3. Antimicrobial activity of Bauhinia tomentosa and Bauhinia vahlii roots

    Directory of Open Access Journals (Sweden)

    Swarnalatha Dugasani

    2010-01-01

    Full Text Available The hexane, ethylacetate and methanol extracts from Bauhinia tomentosa and Bauhinia vahlii roots were tested for their antimicrobial activity against Gram-positive bacteria (four strains, Gram-negative bacteria (three strains and three fungi strains using microdilution methods, for the determination of minimal inhibition concentration (MIC and the minimal microbicidal concentration (MMC. The MIC values of hexane extracts of B. tomentosa and B. vahlii roots were more than 250 μg/ml. The MIC values of ethylacetate and methanol extracts of B. tomentosa roots varied from 7.81 to 31.25 μg/ml and 31.25 to 62.50 μg/ml, respectively. The MIC values of ethylacetate and methanol extracts of B. vahlii roots varied from 15.63 to 62.5 μg/ml and 62.5 to 250 μg/ml, respectively. MMC values obtained are two times greater than the corresponding MIC values. The activities of ethylacetate extracts are attributed to the presence of flavonoids and that of methanol extracts are attributed to the presence of tannins.

  4. Immunomodulatory activity of Bauhinia Racemosa Lam

    OpenAIRE

    Shaikh, Sohrab A.; Ghaisas, Mahesh M.; Deshpande, Avinash D.

    2012-01-01

    Aim: To evaluate immunomodulatory activity of methanolic extract of stem bark of Bauhinia racemosa Lam swiss albino mice. Material and Methods: The specific humoral immunity was assessed by performing hemagglutinating antibody titer (H.A.Titer) and the non-specific immunity was assessed by performing carbon clearance test and neutrophil adhesion test. Results: The methanolic extract of stem bark of Bauhinia Racemosa (MEBR) was found effective in increasing the H.A.Titer. Primary and sec...

  5. Hypoglycemic activity of two Brazilian Bauhinia species: Bauhinia forficata L. and Bauhinia monandra Kurz. Atividade hipoglicemiante de duas espécies de Bauhinia brasileira: Bauhinia forficata L. and Bauhinia monandra Kurz.

    Directory of Open Access Journals (Sweden)

    Fábio de Sousa Menezes

    2007-03-01

    Full Text Available The hypoglycemic activity of aqueous extracts from Bauhinia forficata L. and Bauhinia monandra Kurz leaves (10% w/v was evaluated in normoglycemic mice. Both extracts have shown hypoglycemic activity using this methodology. It was also possible to isolate two flavonoids from B. forficata L., 3,7-di-O-alpha-rhamnopyranosylquercetin and 3,7-di-O-alpha-rhamnopyranosylkaempferol (kaempferitrin, whose structures were elucidated by usual NMR techniques. Only the quercetin derivative was identified in B. monandra aqueous extract by HPLC.Extratos aquosos das folhas de Bauhinia forficata L. e Bauhinia monandra Kurz (10% p/v foram testados em camundongos normoglicêmicos, objetivando averiguar a sua atividade hipoglicemiante. Ambos os extratos mostraram atividade hipoglicemiante na metodologia empregada. Ainda, foi possível isolar de B. forficata L. dois flavonóides, quercetina-3,7-O-dirhamnosido e kaempferol-3,7-O-dirhamnosido, sendo as estruturas estabelecidas por técnicas clássicas de RMN. Apenas o derivado da quercetina foi identificado no extrato aquoso de Bauhinia monandra por CLAE.

  6. Hepatoprotective properties of Bauhinia variegata bark extract.

    Science.gov (United States)

    Bodakhe, Surendra H; Ram, Alpana

    2007-09-01

    Bauhinia variegata (Leguminosae) commonly known as Kachnar, is widely used in Ayurveda as tonic to the liver. The present work was carried out to assess the potential of Bauhinia variegata bark as hepatoprotective agent. The hepatoprotective activity was investigated in carbon tetrachloride (CCl(4)) intoxicated Sprague-Dawley rats. Bauhinia variegata alcoholic Stem Bark Extract (SBE) at different doses (100 and 200 mg/kg) were administered orally to male Sprague-Dawley rats weighing between 100-120 g. The effect of SBE on the serum marker enzymes, viz., AST, ALT, ALP and GGT and liver protein and lipids were assessed. The extract exhibited significant hepatoprotective activity. Hence, B. variegata appears to be a promising hepatoprotective agent.

  7. The Pharmacological Importance of Bauhinia variegata. A Review

    Directory of Open Access Journals (Sweden)

    Ali Esmail Al-Snafi

    2014-12-01

    Full Text Available Bauhinia variegata L. was widely used in traditional medicine to treat a wide range of complains. It contained many secondary metabolites which are suitable to be used as medicines. The phytochemical screening revealed that Bauhinia variegata contained terpenoids, flavonoids, and tannins, saponins, reducing sugars, steroids and cardiac glycosides. The pharmacological studies showed that Bauhinia variegate exerted anticancer, antioxidant, hypolipidemic, antimicrobial, anti-inflammatory, nephroprotective, hepatoprotective, antiulcer, immunomodulating, molluscicidal and wound healing effects. This review aimed to highlight the chemical constituents and the pharmacological and therapeutic effects of Bauhinia variegate.

  8. A REVIEW ON BAUHINIA VARIEGATA LINN

    Directory of Open Access Journals (Sweden)

    Sahu G

    2012-01-01

    Full Text Available Bauhinia variegata linn. (Kachnar/Raktakanchan is a medium sized tree with hairy branches belonging to family Leguminosae. The various parts of trees like flowers buds, flowers, stem bark, stem, leaves, seeds and root are popular in various system of medicines like ayurveda, unani and homeopathy in India for the cure of variety of diseases. This is widely used for the manufacture of wood wool board, production of gum and fibers and for a forestation to conserve the nature. Various traditional claims have been made on this tree for curing in number of diseases; considerable efforts have been made by researcher to verify its utility through scientific pharmacological screenings. The reported biological activities are anti-diabetic activity, anti-inflammatory activity, immune-modulatory activity, anti-tumour activity, hepatoprotective activity, antibacterial activity, haemagglutinating activity, haematinic activity, antimicrobial activity, antiulcer activity, anticarcinogenic activity. This review represents a detailed survey of the literature on pharmacognosy, phytochemistry, traditional, medicinal uses and pharmacological activities of Bauhinia variegata Linn.

  9. A new phenanthraquinone from the stems of Bauhinia variegata L.

    Science.gov (United States)

    Zhao, Y-Y; Cui, C-B; Cai, B; Han, B; Sun, Q-S

    2005-12-01

    A new phenanthraquinone, named bauhinione (1), has been isolated from Bauhinia variegata L., and its structure has been elucidated as 2,7-dimethoxy-3-methyl-9,10-dihydrophenanthrene-1,4-dione on the basis of spectroscopic analysis.

  10. Acetylcholinesterase inhibition starting from extracts of Bauhinia variegata L., Bauhinia var. candida (Aiton Buch.-Ham., and Bauhinia ungulata L

    Directory of Open Access Journals (Sweden)

    Kamilla Monteiro dos Santos

    2011-12-01

    Full Text Available INTRODUCTION: A treatment to the Alzheimer's disease consists inhibition of the acetylcholinesterase, which is responsible for the acetylcholine control in the synapses. METHODS: We have investigated the potential of inhibition of the acetylcholinesterase produced by hexane extracts of leaves, branches, and flowers from three Bauhinia specimens, which is based on the technique of thin layer chromatography and on identifying the organ of the plant that possesses larger concentration of inhibitors. RESULTS: Retention factor analysis shows values of 0.31aA, 0.31aA, and 0.46aB for flowers B. variegata, B. var. candida, and B. ungulata, respectively. CONCLUSIONS: The flower extract of B. ungulata is the most suitable for further studies on this inhibition.

  11. Physico-chemical Characteristics of Oil and Seed Residues of Bauhinia variegata and Bauhinia linnaei

    Directory of Open Access Journals (Sweden)

    Sarfraz Arain

    2012-06-01

    Full Text Available Physico-chemical characteristics of two Bauhinia seed varieties (B. variegata and B. linnaei, were evaluated for commercial exploration. Physico-chemical characteristics of the oils for both varieties were demonstrated and mean values found to be refractive index (40 °C 1.4589 and 1.4588, peroxide value 1.9 and 2.4 (meq O2 / kg of oil, iodine value 84.5 and 92.2 (g of I2/100g of oil, saponification number 191.3 and 195.5 (mg of KOH /g of oil, free fatty acids 0.6% and 0.9%, unsaponifiable matter 0.9% and 1.2% and color (1 in. cell, 2.2-2.9R + 30.0-25.0Y, respectively. Linoleic 42.1 and 45.8 %, oleic 13.4 and 12.6%, stearic 17.5 and 18.8% and palmitic 22.1 and 16.8% were the main fatty acids in the crude seed oils. Minor amounts of palmitoleic, margaric, linolenic, arachidic, behenic, eicosapentaenoic and nervonic acid were also identified. The composition of defatted seed residue of B. variegata and B. linnaei were found as: protein 41.9% and 38.6%, oil 18.0%, and 17.4% ash 4.8% and 4.2%, moisture 6.7% and 6.3%, fiber 6.9% and 7.3% and total carbohydrate 28.4% and 33.8%, respectively. Proximate and fatty acid composition of both Bauhinia varieties were found to be almost similar. It was concluded that Bauhinia seed is a rich source of linoleic acid and could be explored for commercial uses.

  12. A new lignan rhamnoside from Bauhinia retusa seed pods (Caesalpiniaceae)

    Institute of Scientific and Technical Information of China (English)

    Sushma Semwal; Rajni Kant Sharma

    2011-01-01

    A new lignan rhamnoside identified as 2,6-di(4',5'-dihydroxyphenyl)-3,7-dioxabicyclo[3.3.0]octane-1-hydroxy-5-O-rhamno-pyranoside (1) has been isolated from the ethanolic extract of seed pods of Bauhinia retusa. Its structure was established by extensive spectroscopic techniques (UV, IR, ID NMR, 2D NMR, HRESIMS).

  13. Antitumour activity of Bauhinia variegata on Dalton's ascitic lymphoma.

    Science.gov (United States)

    Rajkapoor, B; Jayakar, B; Murugesh, N

    2003-11-01

    The antitumour activity of the ethanol extract of Bauhinia variegata (EBV) has been evaluated against Dalton's ascitic lymphoma (DAL) in Swiss albino mice. A significant enhancement of mean survival time of EBV-treated tumour bearing mice was found with respect to control group. EBV treatment was found to enhance peritoneal cell counts. After 14 days of inoculation, EBV is able to reverse the changes in the haemotological parameters, protein and PCV consequent to tumour inoculation.

  14. A flavanone and a dihydrodibenzoxepin from Bauhinia variegata.

    Science.gov (United States)

    Reddy, Mopuru V B; Reddy, Muntha K; Gunasekar, Duvvuru; Caux, Cristelle; Bodo, Bernard

    2003-10-01

    Phytochemical analysis of the root bark of Bauhinia variegata Linn yielded a new flavanone, (2S)-5,7-dimethoxy-3',4'-methylenedioxyflavanone (1) and a new dihydrodibenzoxepin, 5,6-dihydro-1,7-dihydroxy-3,4-dimethoxy-2-methyldibenz [b,f]oxepin (2) together with three known flavonoids (3-5). The structures of the new compounds were determined on the basis of spectral studies.

  15. Determining the genotoxicity of an aqueous infusion of Bauhinia monandra leaves Determinação da genotoxicidade do infuso aquoso das folhas da Bauhinia monandra

    Directory of Open Access Journals (Sweden)

    Márcia Fernanda Silva Macêdo

    2008-12-01

    Full Text Available Bauhinia monandra, commonly known as "cow's-foot", is native from Asia and widely used all over the world to treat a variety of illnesses, in particular diabetes. The high usage of the plant in Brazil and to fulfill the need of medicinal plant regulation by the Ministry of Public Health, we aimed at determining the genotoxicity, cytotoxicity and mutagenicity of an aqueous infusion from B. monandra leaves. The results were correlated to the chemical compounds found after phytochemical selection. Tests were performed in an in vitro system with plasmid DNA, in the presence and absence of exonuclease III, and in vivo system employing prokaryotic (transformation into competent DH10B bacteria and eukaryotic (Allium cepa assays. The infusion concentrations were 0.8 µg/µL, 4 µg/µL, 20 µg/µL and 100 µg/µL. The infusion concentrations did not cause mutagenicity or cytotoxicity, however the highest concentrations were able to induce breaks in DNA phosphodiester bonds and form abasic sites, an effect suggested by the presence of phenolic hydroxyls. The results revealed risks and benefits of plant extracts for therapeutic use and their effect on genetic integrity, especially when commonly employed as a hypoglycemic.Bauhinia monandra, popularmente conhecida como "pata-de-vaca", é nativa da Ásia e amplamente utilizada em todo o mundo para o tratamento de várias doenças, em especial diabetes. Diante da grande utilização dessa planta no Brasil, e de forma a satisfazer a necessidade de regulamentação das plantas medicinais pelo Ministério Público de Saúde, objetivamos determinar a genotoxicidade, citotoxicidade e mutagenicidade do infuso aquoso das folhas da B. monandra. Os resultados foram correlacionados com os compostos químicos encontrados após realização de uma triagem fitoquímica. Os testes foram realizados em sistema in vitro como o DNA plasmidial, na presença e ausência de exonuclease III, e in vivo empregando sistema procarioto

  16. Uma “mulher metodista pregadora” em 1775: capaz de mobilizar uma cidade inteira, mas – esquecida

    Directory of Open Access Journals (Sweden)

    Helmut Renders

    2011-12-01

    Full Text Available Uma “mulher metodista pregadora” em 1775: capaz de mobilizar uma cidade inteira, mas – esquecida A “woman Methodist preacher” in 1775: capable of mobilizing an entire city, but – forgottenUna “predicadora metodista” en 1775: capaz de movilizar a toda una ciudad, pero – olvidada

  17. Molecular Evidence for the Hybrid Origin of Bauhinia blakeana (Caesalpinioideae)

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Bauhinia blakeana Dunn is the Hong Kong Special Administrative Region emblem and a popular horticultural species in many Asian countries. It was first described as a new species from Hong Kong almost a century ago. This plant is sterile and has long been considered a hybrid, possibly from two related species, B. purpurea and B. variegata. However, not much evidence based on molecular methods was available to support this hypothesis. In this study, sequences of internal transcribed spacer 1 (ITS1), rbcL and atpB-rbcL intergenic spacer for five Bauhinia species and two varieties of one of the species were determined and compared. There were two types of ITS1 sequences in B. blakeana, one indistinguishable from that of B. purpurea and the other one identical to that of B. variegata. This confirmed that B. blakeana was a hybrid of these two species. Chloroplast atpB-rbcL intergenic spacer sequence of B. blakeana was identical to that of B. purpurea,indicating that B. purpurea was the female parent. The hybridization event seemed to occur only recently and was a rare incident. Its occurrence was likely facilitated by interspecific pollen competition. It appeared that human efforts played a crucial role in the preservation and ubiquity of B. blakeana.

  18. Molecular evidence for the hybrid origin of Bauhinia blakeana (Caesalpinioideae).

    Science.gov (United States)

    Mak, Chun Yin; Cheung, Ka Shing; Yip, Pui Ying; Kwan, Hoi Shan

    2008-01-01

    Bauhinia blakeana Dunn is the Hong Kong Special Administrative Region emblem and a popular horticultural species in many Asian countries. It was first described as a new species from Hong Kong almost a century ago. This plant is sterile and has long been considered a hybrid, possibly from two related species, B. purpurea and B. variegata. However, not much evidence based on molecular methods was available to support this hypothesis. In this study, sequences of internal transcribed spacer 1 (ITS1), rbcL and atpB-rbcL intergenic spacer for five Bauhinia species and two varieties of one of the species were determined and compared. There were two types of ITS1 sequences in B. blakeana, one indistinguishable from that of B. purpurea and the other one identical to that of B. variegata. This confirmed that B. blakeana was a hybrid of these two species. Chloroplast atpB-rbcL intergenic spacer sequence of B. blakeana was identical to that of B. purpurea, indicating that B. purpurea was the female parent. The hybridization event seemed to occur only recently and was a rare incident. Its occurrence was likely facilitated by interspecific pollen competition. It appeared that human efforts played a crucial role in the preservation and ubiquity of B. blakeana.

  19. Comparative evaluation of In-Vitro Antihelminthic activity of Bauhinia tomentosa

    Directory of Open Access Journals (Sweden)

    Pattewar Aditya

    2013-06-01

    Full Text Available The traditional systems of medicine have always been considered as priceless tank of new bio-active molecules with immense medicinal and pharmacological importance. Most of the traditional systems are based on use of plant as medicine, but now day’s use of different medicinal plant is neglected because of lack of scientific data and proofs committing their medicinal importance. Through this study we have proved the anthelmintic activity of one Indian medicinal plant Bauhinia tomentosa family Caesalpiniaceae. The anthelmintic activity was evaluated by using common method of Ajaiyeoba with some minor modification against two worms Pheritema postuma, family Megascolecidae and Ascaris lumbricoides, family Ascarididae. Our in vitro study concludes that plant Bauhinia tomentosa possesses good anthelmintic activity, so it is recommended to consider Bauhinia tomentosa and other such plant of traditional systems seriously and must be tested for in-vivo activity so as to prove and promote their beneficial use in small ruminants.

  20. Toxicity of Bauhinia variegata and Mimusops elengi with plant molluscicides against Lymnaea acuminata

    Directory of Open Access Journals (Sweden)

    Kanchan Lata Singh

    2012-01-01

    Full Text Available Molluscicidal activity of binary combination of Bauhinia variegata and Mimusops elengi with other plant molluscicides Saraca asoca and Thuja orientalis against snail Lymnaea acuminata have been studied. It was observed that toxicity of binary combinations of plant molluscicides with other plant molluscicides were toxic against fresh water snail L. acuminata. Among all combinations of toxicity Mimusops elengi leaf + Saraca asoca bark (24h LC50: 98.25 mg/l; 96h LC50: 40.40 mg/l and Bauhinia variegata leaf powder + Saraca asoca leaf (24h LC50: 123.98 mg/l; 96h LC50: 57.91 mg/l was more toxic than other binary combinations of plant molluscicides. Mimusops elengi leaf powder + Saraca asoca leaf powder and Bauhinia variegata leaf powder + Saraca asoca leaf powder are more potent molluscicides.

  1. Anti-inflammatory activity of a novel flavonol glycoside from the Bauhinia variegata Linn.

    Science.gov (United States)

    Yadava, R N; Reddy, V Madhu Sudhan

    2003-06-01

    Bauhinia variegata Linn. (Leguminosae) is commonly known as 'Kachnar' in Hindi. It is distributed almost throught India. Its powdered bark is traditionally used for tonic, astrain, ulcers. It is also useful in skin diseases. The roots are used as antidote to snake poison. The present article deals with the isolation and structural elucidation of a novel flavonol glycoside 5,7,3',4'-tetrahydroxy-3-methoxy-7-O-alpha-L-rhamnopyranosyl(1-->3)-O-beta-galactopyranoside (1) from the roots of Bauhinia Variegata and its structure was identified by spectral analysis and chemical degradations. The novel compound (1) showed anti-inflammatory activity.

  2. ESTUDO FITOQUÍMICO DE Bauhinia forficata (FABACEAE)

    OpenAIRE

    Ranggel Carvalho Simões; Sheylla Susan Moreira da Silva de Almeida

    2015-01-01

    O presente trabalho descreve resultados de prospecção fitoquímica preliminar, bioensaio com Artemia salina e atividade antimicrobiana da Bauhinia forficata Link, conhecida popularmente como Pata-de-vaca. O gênero Bauhinia é pantropical, suas espécies são utilizadas em vários tratamentos, como antidiabético, infecções e processos dolorosos. O “screening” fitoquímico foi realizado com o Extrato Bruto Etanóico (EBE) sendo o mesmo obtido a partir da percolação do pó das cascas do caule da B. forf...

  3. Bauhinia variegata var. variegata lectin: isolation, characterization, and comparison.

    Science.gov (United States)

    Chan, Yau Sang; Ng, Tzi Bun

    2015-01-01

    Bauhinia variegata var. variegata seeds are rich in proteins. Previously, one of the major storage proteins of the seeds was found to be a trypsin inhibitor that possessed various biological activities. By using another purification protocol, a glucoside- and galactoside-binding lectin that demonstrated some differences from the previously reported B. variegata lectin could be isolated from the seeds. It involved affinity chromatography on Affi-gel blue gel, ion exchange chromatography on Q-Sepharose and Mono Q, and also size exclusion chromatography on Superdex 75. The lectin was not retained on Affi-gel blue gel but interacted with Q-Sepharose. The lectin was a 64-kDa protein with two 32-kDa subunits. It had low thermostability (stable up to 50 °C) and moderate pH stability (stable in pH 3-10). It exhibited anti-proliferative activity on nasopharyngeal carcinoma HONE1 cells with an IC50 of 12.8 μM after treatment for 48 h. It also slightly inhibited the growth of hepatoma HepG2 cells. The lectin may have potential in aiding cancer treatments.

  4. Larvicidal activity against Aedes aegypti of pacharin from Bauhinia acuruana.

    Science.gov (United States)

    da Silva Góis, Roberto Wagner; de Sousa, Leôncio Mesquita; Santiago, Gilvandete Maria Pinheiro; Romero, Nirla Rodrigues; Lemos, Telma Leda Gomes; Arriaga, Angela Martha Campos; Braz-Filho, Raimundo

    2013-07-01

    The aim of the present study was to evaluate the activity of pacharin isolated from the ethanol extract from roots of Bauhinia acuruana on third-instar larvae of Aedes aegypti Linn. (Diptera: Culicidae). The crude ethanol extract showed larvicidal activity at the concentration of 500 μg/mL. Given this larvicidal activity, this extract was submitted to chromatographic fractionation on a silica gel column eluted with n-hexane, dichloromethane, ethyl ether, ethyl acetate, and methanol in order to isolate the active compound(s). Pacharin, obtained in pure form from fraction eluted with ethyl ether, was evaluated for their larvicidal effects against A. aegypti. In these bioassays, the larvae were exposed at concentrations of 500, 250, 100, 50, and 25 μg/mL of the crude ethanol extract or pacharin. After 24 h, the number of dead larvae was counted and the LC₅₀ values for larval mortality were calculated. Pacharin showed LC50 value of 78.9 ± 1.8 μg/mL. The structure of isolated compound was identified on the basis of their spectral data (IR, 1D- and 2D-NMR) and by comparison with literature spectral data. The results indicate pacharin as a potential natural larvicide.

  5. Study of Antiulcer Activity of Bauhinia racemosa lam in Rats

    Directory of Open Access Journals (Sweden)

    V.I. Borikar

    2009-12-01

    Full Text Available An experiment was conducted to study the antiulcer effect of the dried fruit powder of the plant Bauhinia racemosa in Wistar albino rats. Thirty Wistar rats of either sex weighing between 150 - 200gm were selected and divided into five groups, each comprising of six rats. The rats were divided into 5 groups T1T2, T3, T4, and T5 and were given 0.5 ml normal saline, aqueous extract in the dose rate of100mg/kg body weight, 200mg/kg body weight, alcoholic extract @100mg/kg body weight and 200mg/kg body weight respectively. After one hour all the groups were administered Paracetamol at a dose rate of 200mg/kg body weight orally. After 24hrs, the number of ulcers, ulcer score, percent incidence, ulcer index and healing index were recorded. From the results obtained it was concluded that aqueous extract in the dose rate of 200mg/kg body weight and alcoholic extract (100mg/kg & 200mg/kg body weight could produce antiulcer activity. [Vet World 2009; 2(6.000: 217-218

  6. Antitumor activity and antioxident role of Bauhinia racemosa against Ehrlich ascites carcinoma in Swiss albino mice

    Institute of Scientific and Technical Information of China (English)

    Malaya GUPTA; Upal Kanti MAZUMDER; Ramanathan Sambath KUMAR; Thangavel Siva KUMAR

    2004-01-01

    AIM: To study the antitumor effect and antioxidant role of Bauhinia racemosa. METHODS: Antitumor activity and antioxidant status of methanol extract (50, 100, and 200 mg/kg) of Bauhinia racemosa stem bark was evaluated against Ehrlich ascites carcinoma (EAC) tumor in mice. Acute and short-term toxicity studies were performed initially in order to ascertain the safety of methanol extract of Bauhinia racemosa (MEBR). After 24 h of tumor inoculation, the extract was administered daily for 14 d. After administration of the last dose followed by 18 h fasting, mice were then sacrificed for observation of antitumor activity. The effect of MEBR on the growth of transplantable murine tumor, life span of EAC bearing hosts and simultaneous alterations in the hematological profile and liver biochemical parameters (lipid peroxidation, antioxidant enzymes) were estimated. RESULTS: The MEBR showed decrease in tumor volume, packed cell volume and viable cell count, and increased the nonviable cell count and mean survival time thereby increasing life span of EAC tumor bearing mice. Hematological profile reverted to more or less normal levels in extract treated mice. Treatment with MEBR decreased the levels of lipid peroxidation and increased the levels of glutathione, superoxide dismutase and catalase. CONCLUSION: The methanol extract of Bauhinia racemosa stem bark exhibited antitumor effect by modulating lipid peroxidation and augmenting antioxidant defense system in EAC bearing mice.

  7. Evaluation of Anti-Inflammatory, Anti-diabetic activityof Indian Bauhinia vahlii (stembark)

    Institute of Scientific and Technical Information of China (English)

    Das Surya Narayan; Patro Varanashi Jagannath; Dinda Subas Chandra

    2012-01-01

    Objective: To evaluate the anti-inflammatory and antidiabetic property of Bauhinia vahlii (stem bark) with preliminary phytochemical profile of the extracts. Methods: The dried whole plant material (1400 g) was packed in soxhlet apparatus and extracted successively with Pet. Ether (PE) to defat the drug, petroleum ether was removed from the powdered defatted drug which was then extracted with benzene (BE), chloroform(CE) and 95% of Ethanol (EE) as increasing polarity and all extracts screened for anti-inflammatory and antidiabetic activity using carrageenan induced paw edema and streptozotacin induced diabetic respectively. The toxicity and phytochemical screening were done using standard procedure. Result: The preliminary phytochemical tests revealed the presence of alkaloids, flavonoids, phytosterol, phenolic compounds, and glycoside. While carbohydrates, protein, gums and amino acids were absent. The acute toxicity study of various extracts of Bauhinia vahlii was conducted and dose of 353 mg/kg is fixed for anti-inflammatory and antidiabetic perperty. The pet ether, chloroform and ethanolic extract ofBauhinia vahlii significantly decreased the paw edema induced by carrageenin in rats at a dose of 353 mg/kg comparable to standard ibuprofen (100 mg/kg). Similarly in case of antidiabetic property, the ethanolic and chloroform extract of Bauhinia vahlii at a dose level 353 mg/kg, showed significant reduction in blood sugar level from 2 to 24 h in progressive manner comparable to standard glibenclamide (5mg/kg).

  8. Effects of light and nutrients on seedlings of tropical Bauhinia lianas and trees

    NARCIS (Netherlands)

    Cai, Z.Q.; Poorter, L.; Han, Q.; Bongers, F.J.J.M.

    2008-01-01

    Lianas differ from trees in many life history characteristics, and we predicted that they are phenotypically more responsive to environmental variation than trees. We analyzed responsiveness to light and nutrient availability of five Bauhinia species (three lianas and two trees). Seedlings were grow

  9. Vegetative propagation of bauhinia x blakeana, an ornamental sterile tree

    Directory of Open Access Journals (Sweden)

    Renata Bachin Mazzini

    2013-04-01

    Full Text Available Bauhinia x blakeana (B. purpurea x B. variegata is a natural hybrid that has been cultivated in gardens, streets and parks. Due to its sterility, it must be vegetatively propagated. The objective of this work was to evaluate the viability of cuttings and grafting on its propagation. Semi-woody cuttings were collected during four seasons and treated with 0; 1,000; 2,000; and 3,000 mg L-1 of IBA. The experimental design was entirely randomized and the treatments were arranged in a 4x4 factorial scheme (four collecting times x four IBA concentrations and five replications with 10 cuttings each, per collecting time and per IBA concentration. Characteristics of roots and shoots were evaluated after 90 days. The data means were compared by the Tukey test and submitted to the polynomial regression analysis. For the grafting experiment, B. variegata and B. variegata var. candida plants of six and 12 months were used as rootstocks and the splice graft and T-budding methods were tested. The experimental design was entirely randomized and the treatments were arranged in a 2x2x2 factorial scheme (two rootstock species x two grafting methods x two rootstock ages and four replications with five plants each, per rootstock species, per grafting method and per rootstock age. Characteristics of shoots were evaluated after 90 days and the data means were compared by the Tukey test. B. x blakeana can be propagated by semi-woody cuttings collected in spring, without IBA application, or in summer, with the application of 3,000 mg L-1 of IBA. The tested grafting methods were not effective.

  10. In vitro antioxidant and antihyperlipidemic activities of Bauhinia variegata Linn

    Directory of Open Access Journals (Sweden)

    Rajani G

    2009-01-01

    Full Text Available Objectives : To evaluate the ethanolic and aqueous extracts of Bauhinia variegata Linn. for in vitro antioxidant and antihyperlipidemic activity. Materials and Methods : Ethanolic and aqueous extracts of the stem bark and root of B. variegata Linn. were prepared and assessed for in vitro antioxidant activity by various methods namely total reducing power, scavenging of various free radicals such as 1,2-diphenyl-2-picrylhydrazyl (DPPH, super oxide, nitric oxide, and hydrogen peroxide. The percentage scavenging of various free radicals were compared with standard antioxidants such as ascorbic acid and butylated hydroxyl anisole (BHA. The extracts were also evaluated for antihyperlipidemic activity in Triton WR-1339 (iso-octyl polyoxyethylene phenol-induced hyperlipidemic albino rats by estimating serum triglyceride, very low density lipids (VLDL, cholesterol, low-density lipids (LDL, and high-density lipid (HDL levels. Result : Significant antioxidant activity was observed in all the methods, (P < 0.01 for reducing power and (P < 0.001 for scavenging DPPH, super oxide, nitric oxide, and hydrogen peroxide radicals. The extracts showed significant reduction (P < 0.01 in cholesterol at 6 and 24 h and (P < 0.05 at 48 h. There was significant reduction (P < 0.01 in triglyceride level at 6, 24, and 48 h. The VLDL level was also significantly (P < 0.05 reduced from 24 h and maximum reduction (P < 0.01 was seen at 48 h. There was significant increase (P < 0.01 in HDL at 6, 24, and 48 h. Conclusion : From the results, it is evident that alcoholic and aqueous extracts of B. variegata Linn. can effectively decrease plasma cholesterol, triglyceride, LDL, and VLDL and increase plasma HDL levels. In addition, the alcoholic and aqueous extracts have shown significant antioxidant activity. By the virtue of its antioxidant activity, B. variegata Linn. may show antihyperlipidemic activity.

  11. Marqueurs de discours et distanciation: une étude contrastive de peut-être, capaz et por ahí = (Discourse markers and distance: a contrastive study of peut-être, capaz and por ahi)

    OpenAIRE

    2013-01-01

    In this paper, the semantic function of French peut-être and two typical markers of the Spanish of the Rio de la Plata, capaz and por ahi, are described in a contrastive way. While these three markers can generally introduce the speaker’s distance from his or her discourse, our corpus shows that three general categories of use must be distinguished: attenuation, sharper distance and radical rejection of the viewpoint so marked. In the framework of a polyphonic and argumentative...

  12. Germinação e sanidade de sementes de Bauhinia variegata Germination and sanity of seeds of Bauhinia variegata

    Directory of Open Access Journals (Sweden)

    Adriana Martinelli-Seneme

    2006-10-01

    Full Text Available As bauínias são consideradas pioneiras tardias na escala de sucessão vegetal, pois têm crescimento moderadamente rápido. Podem ser utilizadas como planta forrageira, ornamental, para papel e celulose, madeira serrada e roliça e também para recuperação de áreas degradadas. Buscando-se alternativas por meio de métodos de escarificação, para uma germinação rápida e uniforme, sementes de Bauhinia variegata foram submetidas aos seguintes tratamentos pré-germinativos: escarificação mecânica com lixa 220; imersão em água quente a 80 ºC; imersão em água fria a 10 ºC durante 2 h; corte com tesoura na região oposta à micrópila; imersão em ácido sulfúrico concentrado por 5 min seguida de lavagem em água corrente; e imersão em ácido sulfúrico concentrado por 20 min, seguida de lavagem em água corrente. Em seguida, as sementes foram colocadas para germinar em caixas plásticas tipo gerbox em substrato de vermiculita sob temperatura constante de 30 ºC, com avaliações aos sete e 14 dias, e semeadas em bandejas de isopor em areia em casa de vegetação. Avaliaram-se, em casa de vegetação, a porcentagem final de emergência aos 32 dias após a semeadura e o índice de velocidade de emergência. Foi realizado, ainda, o teste de sanidade (Blotter Test com 400 sementes, pelo método de papel-filtro (Blotter test. Para o teste de germinação e índice de velocidade de emergência foram utilizadas cinco subamostras de 30 sementes de cada tratamento, sendo o experimento conduzido em delineamento inteiramente casualizado, em comparação com as médias pelo teste de Tukey (P>0,05. Constatou-se que a escarificação mecânica (lixa e corte com tesoura e a imersão em água fria promoveram a germinação das sementes. No entanto, os valores foram semelhantes, estatisticamente, à testemunha; a velocidade de germinação em laboratório foi maior quando as sementes foram escarificadas com lixa ou imersas em água fria por 2 h; o

  13. Germinação e vigor de sementes de Bauhinia divaricata L. Germination and vigor of the Bauhinia divaricata L. seeds

    Directory of Open Access Journals (Sweden)

    Edna Ursulino Alves

    2008-08-01

    Full Text Available A pata-de-vaca (Bauhinia divaricata é uma espécie arbórea, amplamente distribuída no Brasil, de alto valor ornamental e econômico. Sua propagação ocorre por meio de sementes, cuja germinação tem sido pouco investigada. Dessa forma, o presente trabalho teve como objetivo definir o tipo de substrato e a temperatura mais adequados para avaliar a germinação e o vigor de sementes de Bauhinia divaricata. O experimento foi realizado no Laboratório de Análise de Sementes do CCA-UFPB, em Areia-PB, em delineamento inteiramente casualizado com os tratamentos distribuídos em esquema fatorial 3 x 5, com os fatores temperaturas constantes de 25 e 30°C e alternada 20-30°C e substratos entre papel, sobre papel, rolo de papel, entre areia e entre vermiculita, em quatro repetições de 25 sementes, em câmaras tipo BOD, com fotoperíodo de oito horas. Foram analisadas as seguintes variáveis: porcentagem de germinação, primeira contagem e índice de velocidade de germinação e massa seca de plântulas. Concluiu-se que a temperatura de 25°C, juntamente com os substratos entre papel, sobre papel e rolo de papel, é adequada para condução de testes de germinação e vigor com sementes de Bauhinia divaricata. O substrato areia nas três temperaturas (20-30, 25 e 30°C foi responsável pelas menores porcentagens de germinação e níveis de vigor das sementes.The Bauhinia divaricata is an arboreal species with high ornamental and economical value and distributed throughout Brazil. It is propagated by seeds, from which germination needs more investigation. So, this study was carried out at the Seed Analysis Laboratory pertaining to CCA-UFPB - Areia, in BOD-type chambers with 8h photoperiod in order to determine the most adequate substratum and temperature for evaluating the germination and vigor of the Bauhinia divaricata seeds. The entirely randomized experimental design in the factorial scheme 3 x 5 was used. The factors were constituted by

  14. Bauhinia variegata var. variegata trypsin inhibitor: from isolation to potential medicinal applications.

    Science.gov (United States)

    Fang, Evandro Fei; Wong, Jack Ho; Bah, Clara Shui Fern; Lin, Peng; Tsao, Sai Wah; Ng, Tzi Bun

    2010-06-11

    Here we report for the first time of a new Kunitz-type trypsin inhibitor (termed BvvTI) from seeds of the Camel's foot tree, Bauhinia variegata var. variegata. BvvTI shares the same reactive site residues (Arg, Ser) and exhibits a homology of N-terminal amino acid sequence to other Bauhinia protease inhibitors. The trypsin inhibitory activity (K(i), 0.1 x 10(-9)M) of BvvTI ranks the highest among them. Besides anti-HIV-1 reverse transcriptase activity, BvvTI could significantly inhibit the proliferation of nasopharyngeal cancer CNE-1 cells in a selective way. This may partially be contributed by its induction of cytokines and apoptotic bodies. These results unveil potential medicinal applications of BvvTI.

  15. Bauhinia variegata var. variegata trypsin inhibitor: From isolation to potential medicinal applications

    Energy Technology Data Exchange (ETDEWEB)

    Fang, Evandro Fei; Wong, Jack Ho [School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR (China); Bah, Clara Shui Fern [Department of Food Science, Division of Sciences, University of Otago (New Zealand); Lin, Peng [School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR (China); Tsao, Sai Wah [Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Sassoon Road, Pokfulam, Hong Kong SAR (China); Ng, Tzi Bun, E-mail: b021770@mailserv.cuhk.edu.hk [School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR (China)

    2010-06-11

    Here we report for the first time of a new Kunitz-type trypsin inhibitor (termed BvvTI) from seeds of the Camel's foot tree, Bauhinia variegata var. variegata. BvvTI shares the same reactive site residues (Arg, Ser) and exhibits a homology of N-terminal amino acid sequence to other Bauhinia protease inhibitors. The trypsin inhibitory activity (K{sub i}, 0.1 x 10{sup -9} M) of BvvTI ranks the highest among them. Besides anti-HIV-1 reverse transcriptase activity, BvvTI could significantly inhibit the proliferation of nasopharyngeal cancer CNE-1 cells in a selective way. This may partially be contributed by its induction of cytokines and apoptotic bodies. These results unveil potential medicinal applications of BvvTI.

  16. Substâncias isoladas das folhas de Bauhinia microstachya (Raddi Macbr. (Caesalpiniaceae

    Directory of Open Access Journals (Sweden)

    E.M. Bianco

    2003-12-01

    Full Text Available Neste trabalho é relatado o isolamento de três substâncias das folhas de Bauhinia microstachya (Raddi Macbr., Caesalpiniaceae, incluindo dois constituintes isolados pela primeira vez nesta espécie, a vitexina e o hidrocarboneto hexatriacontano. As estruturas desses compostos foram estabelecidas através de estudos de RMN- 1H 1D, 2D e EM.

  17. Cytotoxic activity of a flavanone from the stem of Bauhinia variegata Linn.

    Science.gov (United States)

    Rajkapoor, Balasubramanian; Murugesh, Narayanan; Rama Krishna, Devarakonda

    2009-01-01

    A flavanone has been isolated first time from the stem of Bauhinia variegata, and its structure was identified by colour reactions and spectral analysis. In a search for novel anticancer compounds from medicinal plants, the isolated flavanone was tested for cytotoxic activity against 57 human tumour lines, representing leukaemia, non-small cell lung, colon, central nervous system, melanoma, ovarian, renal, prostate and breast cancers. The results showed that the flavanone has cytotoxic activity against human tumour cell lines.

  18. Phytochemical, antioxidant and antidiabetic evaluation of eight Bauhinia L. species from Egypt using UHPLC-PDA-qTOF-MS and chemometrics.

    Science.gov (United States)

    Farag, Mohamed A; Sakna, Sarah T; El-Fiky, Nabaweya M; Shabana, Marawan M; Wessjohann, Ludger A

    2015-11-01

    Bauhinia L. (Fabaceae) comprises ca. 300-350 plant species, many of which are traditionally used in folk medicine for their antidiabetic, antioxidant and anti-inflammatory effects. Bauhinia s.l. recently has been subdivided into 9 genera based on phylogenetic data: Bauhinia s.str., Barklya, Brenierea, Gigasiphon, Lysiphyllum, Phanera, Piliostigma, Schnella (American Phanera) and Tylosema. The aerial parts of 8 species corresponding to 5 genera were analyzed: Bauhinia forficata, Bauhinia variegata, B. variegata var. candida, Bauhinia galpinii, Schnella glabra, Piliostigma racemosa, Phanera vahlii and Lysiphyllum hookeri. Leaves and shoots were subjected to metabolite profiling via UHPLC-PDA-qTOF-MS coupled to multivariate data analyzes to identify compound compositional differences. A total of 90 metabolites were identified including polyphenols and fatty acids; flavonoid conjugates accounted for most of the metabolite variation observed. This study provides a comprehensive map of polyphenol composition in Bauhinia and phytochemical species aggregations are consistent with recent Bauhinia genus taxonomic relationship derived from phylogenetic studies. DPPH radical scavenging and α-glucosidase inhibitory assays were also performed to assess selected aspects of the antioxidant and antidiabetic potential for the examined species with respect to metabolite profiles.

  19. Evaluation of the immunomodulatory activity of ethanolic extract of the stem bark of Bauhinia variegata Linn

    Directory of Open Access Journals (Sweden)

    Ghaisas M

    2009-01-01

    Full Text Available To evaluate the immunomodulatory activity of the ethanolic extract of the stem bark of Bauhinia variegata Linn, to justify the traditional claim endowed upon this herbal drug as a rasayana in Ayurveda. The effect of the ethanolic extract of the stem bark of Bauhinia variegata (EBV on the primary and secondary antibody responses was evaluated by the humoral antibody response for a specific immune response. The effect of EBV on the phagocytic activity was evaluated by the carbon clearance test and neutrophil activation was evaluated by the neutrophil adhesion test for a nonspecific immune response. The data was analysed by one-way ANOVA followed by Tukey-Kramar multiple comparison tests. On oral administration, EBV showed a significant increase in the primary and secondary humoral antibody responses, by increasing the hemagglutinating antibody titre at doses of 250 and 500mg/kg/p.o. There was a significant increase in the phagocytic index and percentage neutrophil adhesion at doses of 250 and 500mg/kg/p.o. The present study reveals that the ethanolic extract of the stem bark of Bauhinia variegata Linn holds a promise as an immunomodulatory agent, which acts probably by stimulating both the specific and nonspecific arms of immunity.

  20. The complete amino acid sequence of a trypsin inhibitor from Bauhinia variegata var. candida seeds.

    Science.gov (United States)

    Di Ciero, L; Oliva, M L; Torquato, R; Köhler, P; Weder, J K; Camillo Novello, J; Sampaio, C A; Oliveira, B; Marangoni, S

    1998-11-01

    Trypsin inhibitors of two varieties of Bauhinia variegata seeds have been isolated and characterized. Bauhinia variegata candida trypsin inhibitor (BvcTI) and B. variegata lilac trypsin inhibitor (BvlTI) are proteins with Mr of about 20,000 without free sulfhydryl groups. Amino acid analysis shows a high content of aspartic acid, glutamic acid, serine, and glycine, and a low content of histidine, tyrosine, methionine, and lysine in both inhibitors. Isoelectric focusing for both varieties detected three isoforms (pI 4.85, 5.00, and 5.15), which were resolved by HPLC procedure. The trypsin inhibitors show Ki values of 6.9 and 1.2 nM for BvcTI and BvlTI, respectively. The N-terminal sequences of the three trypsin inhibitor isoforms from both varieties of Bauhinia variegata and the complete amino acid sequence of B. variegata var. candida L. trypsin inhibitor isoform 3 (BvcTI-3) are presented. The sequences have been determined by automated Edman degradation of the reduced and carboxymethylated proteins of the peptides resulting from Staphylococcus aureus protease and trypsin digestion. BvcTI-3 is composed of 167 residues and has a calculated molecular mass of 18,529. Homology studies with other trypsin inhibitors show that BvcTI-3 belongs to the Kunitz family. The putative active site encompasses Arg (63)-Ile (64).

  1. Ionic Liquid-Based Microwave-Assisted Extraction of Flavonoids from Bauhinia championii (Benth. Benth.

    Directory of Open Access Journals (Sweden)

    Wei Xu

    2012-12-01

    Full Text Available An ionic liquids (IL-based microwave-assisted approach for extraction and determination of flavonoids from Bauhinia championii (Benth. Benth. was proposed for the first time. Several ILs with different cations and anions and the microwave-assisted extraction (MAE conditions, including sample particle size, extraction time and liquid-solid ratio, were investigated. Two M 1-butyl-3-methylimidazolium bromide ([bmim] Br solution with 0.80 M HCl was selected as the optimal solvent. Meanwhile the optimized conditions a ratio of liquid to material of 30:1, and the extraction for 10 min at 70 °C. Compared with conventional heat-reflux extraction (CHRE and the regular MAE, IL-MAE exhibited a higher extraction yield and shorter extraction time (from 1.5 h to 10 min. The optimized extraction samples were analysed by LC-MS/MS. IL extracts of Bauhinia championii (Benth.Benth consisted mainly of flavonoids, among which myricetin, quercetin and kaempferol, β-sitosterol, triacontane and hexacontane were identified. The study indicated that IL-MAE was an efficient and rapid method with simple sample preparation. LC-MS/MS was also used to determine the chemical composition of the ethyl acetate/MAE extract of Bauhinia championii (Benth. Benth, and it maybe become a rapid method to determine the composition of new plant extracts.

  2. Effect of Bauhinia forficata extract in diabetic pregnant rats: maternal repercussions.

    Science.gov (United States)

    Damasceno, D C; Volpato, G T; Calderon, I de Mattos Paranhos; Aguilar, R; Rudge, M V Cunha

    2004-02-01

    Bauhinia forficata, commonly known as "paw-of-cow", is widely used in Brazil folk medicine for the treatment of Diabetes mellitus. The purposes of present study were to determine the repercussions of diabetes on the defense system against oxidative stress in pregnant female rats and to characterize the influence of the treatment with Bauhinia forficata extract on the antioxidant system, glycemic control, hepatic glycogen, cholesterol, triglycerides, total proteins and lipids. Virgin female Wistar rats were injected with 40 mg/kg streptozotocin (STZ) before mating. Oral administration of an aqueous extract of Bauhinia forficata leaves was given to non-diabetic and diabetic pregnant rats in 3 doses: 500 mg/kg from 0 to 4th day of pregnancy, 600 mg/kg from 5th to 14th day and 1000 mg/kg from 15th to 20th day. All the females were killed on the day 21 of pregnancy. A maternal blood sample was collected by venous puncture and the maternal liver was removed for biochemical measurement. The diabetic pregnant rats presented hyperglycemia, hyperlipemia, hypertriglyceridemia, hypercholesterolemia, hyperuricemia, decreased determinations of reduced glutathione (GSH) and superoxide dismutase (SOD). Treatment with B. forficata extract did not interfere in the albumin, total protein and lipid, triglyceride, cholesterol and SOD determinations. Increased hepatic glycogen, decreased uric acid concentration and increased GSH activity was observed. This last fact suggests that the plant may have some action on antioxidant defense system. However, the demonstration of the active component present in B. forficata responsible for its antioxidant effect and the increase in hepatic glycogen deserve further investigation.

  3. A new species of Bauhinia L. (Caesalpinioideae, Leguminosae from Nakhon Phanom Province, Thailand

    Directory of Open Access Journals (Sweden)

    Wannachai Chatan

    2013-09-01

    Full Text Available A new liana species of the subfamily Caesalpinioideae (Leguminosae, namely Bauhinia nakhonphanomensis, collected from the Phulangkha National Park, Nakhon Pranom Province, Thailand, is described and illustrated. It is easily recognized by the following combination of characters: tendrilled liana, entire leaves, acuminate or caudate leaf apices, oblong or elliptic floral bud, floral bud 25–35 mm long, raceme or panicle inflorescence, 10–13 mm long hypanthium, anther opening by longitudinal slits. Important comparative morphological characters with some closely related species are discussed.

  4. Bioprospecting of antimicrobial activity of extracts of endophytic fungi from Bauhinia guianensis.

    Science.gov (United States)

    Pinheiro, Eduardo A A; Pina, Jeferson R S; Feitosa, André O; Carvalho, Josiwander M; Borges, Fábio C; Marinho, Patrícia S B; Marinho, Andrey M R

    Antibiotic resistance results in higher medical costs, prolonged hospital stays and increased mortality and is rising to dangerously high levels in all parts of the world. Therefore, this study aims to search for new antimicrobial agents through bioprospecting of extracts of endophytic fungi from Bauhinia guianensis, a typical Amazonian plant used in combating infections. Seventeen (17) fungi were isolated and as result the methanolic extract of the fungus Exserohilum rostratum showed good activity against the bacteria tested. The polyketide monocerin was isolated by the chromatographic technique, identified by NMR and MS, showing broad antimicrobial spectrum.

  5. Evaluation of effects of Bauhinia variegata stem bark extracts against milk-induced eosinophilia in mice.

    Science.gov (United States)

    Mali, Ravindra G; Dhake, Avinash S

    2011-04-01

    Bauhinia variegata Linn (family: Caesalpiniaceae), popularly known as Rakta Kanchnar, is a medium-sized tree found throughout India. The stem bark of B. variegata (BV) is used traditionally in the treatment of asthma, jaundice, tuberculosis, leprosy, and skin diseases. In the present study, we have investigated the role of aqueous (BVA) and ethanol (BVE) extracts of the plant against milk-induced leukocytosis and eosinophilia in albino mice. The results of the study revealed that pretreatment with both the extracts caused significant reduction in the total leukocyte and eosinophil counts in animals in dose-dependent manner. From these results, it can be concluded that the plant BV is having antieosinophilic activity.

  6. BIOCHEMICAL STUDIES ON HEPATO AND NEPHROPROTECTIVE EFFECT OF BUTTERFLY TREE (BAUHINIA PURPUREA LINN. AGAINST ACETAMINOPHEN INDUCED TOXICITY

    Directory of Open Access Journals (Sweden)

    T. Sivanagi Reddy

    2012-06-01

    Full Text Available The present study was carried out to evaluate the hepato and nephroprotective activity of ethanolic extract of stem bark of Bauhinia purpurea against paracetamol induced toxicity in rats. 100, 200 and 400 mg/kg, Oral doses of ethanolic extract of stem bark of Bauhinia purpurea was administered to group of animals for 14 days. Silymarin (25 mg/kg served as a standard and paracetamol suspension at a dose of 750 mg/kg, Body weight, was used to induce liver and kidney damage. Parameters of study were glutamate oxaloacetate transaminase (GOT, glutamate pyruvate transaminase (GPT, alkaline phosphatase (ALP, bilirubin, triglycerides and total protein as liver function tests, blood urea nitrogen (BUN, creatinine and urea as kidney function tests. Biochemical studies showed increase in the levels of serum GOT, GPT, ALP, total bilirubin, triglycerides, BUN, creatinine and urea and reduction in the levels of total protein in paracetamol induced groups. These values are retrieved significantly (p< 0.05 in a dose dependant manner by treatment with ethanolic extracts of Bauhinia purpurea stem bark at three different doses. The overall result suggests that the ethanolic extract of stem bark of Bauhinia purpurea possesses hepato and nephroprotective activity against paracetamol induced toxicity.

  7. Chemical Composition, Larvicidal and Cytotoxic Activities of the Essential Oils from two Bauhinia Species

    Directory of Open Access Journals (Sweden)

    Leôncio M. de Sousa

    2016-05-01

    Full Text Available The essential oils obtained by hydrodistilation from leaves of Bauhinia pulchella Benth. and Bauhinia ungulata L. were analysed by GC-FID and GC-MS. The major components of B. pulchella essential oil were identified as a -pinene (23.9%, caryophyllene oxide (22.4% and b -pinene (12.2%, while in the B. ungulata essential oil were caryophyllene oxide (23.0%, (E-caryophyllene (14.5% and a -copaene (7.2%. The essential oils were subsequently evaluated for their larvicidal and cytotoxic activities. Larval bioassay against Aedes aegypti of B. pulchella and B. ungulata essential oils showed LC 50 values of 105.9 ± 1.5 and 75.1 ± 2.8 m g/mL, respectively. The essential oils were evaluated against four human cancer cells lines: HL-60 (pro-myelocytic leukemia, MCF-7 (breast adenocarcinoma, NCI-H292 (lung carcinoma and HEP-2 ( cervical adenocarcinoma, showing IC 50 values in the range of 9.9 to 53.1 m g/mL. This is the first report on chemical composition of essential from leaves of B. pulchella and on larvicidal and cytotoxic activities of the essential oils.

  8. Purification and molecular cloning of a new galactose-specific lectin from Bauhinia variegata seeds

    Indian Academy of Sciences (India)

    Luciano S Pinto; Celso S Nagano; Taianá M Oliveira; Tales R Moura; Alexandre H Sampaio; Henri Debray; Vicente P Pinto; Odir A Dellagostin; Benildo S Cavada

    2008-09-01

    A new galactose-specific lectin was purified from seeds of a Caesalpinoideae plant, Bauhinia variegata, by affinity chromatography on lactose–agarose. Protein extracts haemagglutinated rabbit and human erythrocytes (native and treated with proteolytic enzymes), showing preference for rabbit blood treated with papain and trypsin. Among various carbohydrates tested, the lectin was best inhibited by D-galactose and its derivatives, especially lactose. SDS-PAGE showed that the lectin, named BVL, has a pattern similar to other lectins isolated from the same genus, Bauhinia purpurea agglutinin (BPA). The molecular mass of BVL subunit is 32 871 Da, determined by MALDI-TOF spectrometry. DNA extracted from B. variegata young leaves and primers designed according to the B. purpurea lectin were used to generate specific fragments which were cloned and sequenced, revealing two distinct isoforms. The bvl gene sequence comprised an open reading frame of 876 base pairs which encodes a protein of 291 amino acids. The protein carried a putative signal peptide. The mature protein was predicted to have 263 amino acid residues and 28 963 Da in size.

  9. Hybrid origin of "Bauhinia blakeana" (Leguminosae: Caesalpinioideae), inferred using morphological, reproductive, and molecular data.

    Science.gov (United States)

    Lau, Carol P Y; Ramsden, Lawrence; Saunders, Richard M K

    2005-03-01

    Bauhinia blakeana (Leguminosae subfam. Caesalpinioideae tribe Cercideae), or the Hong Kong Orchid Tree, is of great horticultural value. It is completely sterile and is shown here to be the result of hybridization between the largely sympatric species, B. purpurea and B. variegata. Although the analysis of patterns of morphological variation revealed only a few examples of phenotypic intermediacy, study of intersimple sequence repeat (ISSR) markers enabled unequivocal identification of the parental species due to the presence of additive inheritance of alleles and the absence of any bands that are unique to B. blakeana. Investigation of aspects of the reproductive biology of the taxa furthermore revealed that the parental species are largely xenogamous, have flowering periods that overlap seasonally and temporally, and share common pollinators. Evidence is provided to show that B. blakeana is not naturally stabilized and is only maintained horticulturally by artificial propagation. It is therefore recommended that the hybrid be regarded as a horticultural cultivar rather than a naturally occurring species; a new cultivar name, Bauhinia 'Blakeana', is accordingly validated.

  10. Purification and molecular cloning of a new galactose-specific lectin from Bauhinia variegata seeds.

    Science.gov (United States)

    Pinto, Luciano S; Nagano, Celso S; Oliveira, Taianá M; Moura, Tales R; Sampaio, Alexandre H; Debray, Henri; Pinto, Vicente P; Dellagostin, Odir A; Cavada, Benildo S

    2008-09-01

    A new galactose-specific lectin was purified from seeds of a Caesalpinoideae plant, Bauhinia variegata, by affinity chromatography on lactose-agarose. Protein extracts haemagglutinated rabbit and human erythrocytes (native and treated with proteolytic enzymes), showing preference for rabbit blood treated with papain and trypsin. Among various carbohydrates tested, the lectin was best inhibited by D-galactose and its derivatives, especially lactose. SDS-PAGE showed that the lectin, named BVL, has a pattern similar to other lectins isolated from the same genus, Bauhinia purpurea agglutinin (BPA). The molecular mass of BVL subunit is 32 871 Da, determined by MALDI-TOF spectrometry. DNA extracted from B.variegata young leaves and primers designed according to the B. purpurea lectin were used to generate specific fragments which were cloned and sequenced, revealing two distinct isoforms. The bvl gene sequence comprised an open reading frame of 876 base pairs which encodes a protein of 291 amino acids. The protein carried a putative signal peptide. The mature protein was predicted to have 263 amino acid residues and 28 963 Da in size.

  11. 洋紫荆(Bauhinia variegata L.)花的化学成分研究%Chemical Constituents from Flowers of Bauhinia variegata L.

    Institute of Scientific and Technical Information of China (English)

    廖云; 李蓉涛

    2013-01-01

    Abstract:Bauhinia variegata L.which belongs to the family Leguminosae,distributes in the south part of China,such as Guangdong,Guangxi,Fujian and Yunnan provinces.This plant has been used as a traditional medicine for the treatment of stomach disease and lung disease in Yunnan province.Previously,several components including flavonoids,terpenoids and alkaloids were reported from the rhizomes and stems of B.variegata,but no phytochemical study on the flowers of this plant has been reported.In order to discover more secondary metabolites with potential bioactivities and novel structures,we investigated the flowers of B.variegate collected from Yunnan Province of China.Systematic phytochemical investigation of this plant led to the isolation of eight known compounds,Isoliquiritigenin(1),Naringenin(2),Kaempferol (3),Kaempferol-7-O-β-D-glucopy-ranoside (4),Kaempferol-3-O-β-D-glucopyranoside (5),Caffeic acid (6),(-)-Catechin(7),and Kaempferol-3-O-L-rhamnopyranoside (8).Compounds 1 and 4 were isolated from this plant for the first time.%民间用药洋紫荆(Bauhinia variegata L.)为豆科羊蹄甲属植物,广泛分布于我国南部省份.基于前人的研究,并未发现对洋紫荆花化学成分研究的相关报道,本文以采自云南德宏地区的洋紫荆(B.variegata)花为研究对象,运用各种柱色谱分离手段,从其乙酸乙酯部分中分离得到了8个化合物,经核磁共振波谱及质谱解析,分别鉴定为Isoliquiritigenin(1)、Naringenin(2)、Kaempferol(3)、Kaempferol-7-O-β-D-glucopyranoside(4)、Kaempferol-3-O-β-D-glucopyranoside (5)、Caffeic acid(6)、(-)-Catechin(7)及Kaempferol-3-O-L-rhamnopyranoside (8).化合物1和4为首次从该种植物中分离得到.

  12. Morfologia e anatomia foliar de Bauhinia curvulha Benth. (Leguminosae-Caesalpinioideae Morphology and anatomy of Bauhinia curvula Benth. (Leguminosae-Caesalpinoideae

    Directory of Open Access Journals (Sweden)

    Maria Helena Rezende

    1994-07-01

    Full Text Available Foi realizado o estudo morfológico e anatômico da folha de Bauhinia cumula Benth., espécie de cerrado. As observações foram feitas em folhas adultas, tratadas segundo a metodologia usual utilizada em anatomia vegetal. Foi observado que a espécie apresenta as seguintes características: folhas bilobadas cuja incisão foliar chega próximo à região motora; um par de estipulas membranáceas; um par de nectários extraflorais, localizadaos na base do pulvino proximal; a venação possui padrão acródomo; o pecíolo, que possui dois pulvinos, um proximal e um distai, apresenta epiderme contendo grande quantidade de tricomas tecto res simples e glândulas; a lâmina foliar é anfiestomática com predomínio de estômatos dos tipos anomocítico e paracítico; a epiderme adaxial é monoestratificada, subpapilosa, desprovida de tricomas tectores simples e glândulas; a epiderme abaxial é subpapilosa, apresentando numerosos tricomas tectores simples e glândulas; e o mesofilo é formado predominantemente por parênquima paliçádico.A morphological and anatomical study of Bauhinia curvula Benth. leaf, a cerrado spe-cies, was perfomed. The observations, in grown up leaves, prepared according to the costumary methodology used in plant anatomy, showed the following characteristics of the species: bilobed leaves with foliar incision close to the motor region; one pair of membranaceous stipules; one pair of extrafloral nectaries located on the basis of the proximal pulvinus; acrodromous patterns of leaf venetion; the petiole, which has two pulvinus, one proximal and one distal, has an epidermis containing large quantities of simple tector trichomes and glands; the leaf blade, amphiestomatic, with predominance of anomocytic and paracytic stomata; the adaxial epidermis uniserial, sub papillose, without tector trichomes and glands; the abaxial epiderms, sub-papillose, presents a high number of simple trichomes and glands; and the mesophyll with a basic

  13. Evaluation of effects of Bauhinia variegata stem bark extracts against milk-induced eosinophilia in mice

    Directory of Open Access Journals (Sweden)

    Ravindra G Mali

    2011-01-01

    Full Text Available Bauhinia variegata Linn (family: Caesalpiniaceae, popularly known as Rakta Kanchnar, is a medium-sized tree found throughout India. The stem bark of B. variegata (BV is used traditionally in the treatment of asthma, jaundice, tuberculosis, leprosy, and skin diseases. In the present study, we have investigated the role of aqueous (BVA and ethanol (BVE extracts of the plant against milk-induced leukocytosis and eosinophilia in albino mice. The results of the study revealed that pretreatment with both the extracts caused significant reduction in the total leukocyte and eosinophil counts in animals in dose-dependent manner. From these results, it can be concluded that the plant BV is having antieosinophilic activity.

  14. Nephroprotective effect of Bauhinia variegata (Linn.) whole stem extract against cisplatin-induced nephropathy in rats.

    Science.gov (United States)

    Pani, Saumya R; Mishra, Satyaranjan; Sahoo, Sabuj; Panda, Prasana K

    2011-04-01

    The nephroprotective activity of the ethanolic extract of Bauhinia variegata (Linn.) whole stem against cisplatin-induced nephropathy was investigated by an in vivo method in rats. Acute nephrotoxicity was induced by i.p. injection of cisplatin (7 mg/kg of body weight (b.w.)). Administration of ethanol extract at dose levels of 400 and 200 mg/kg (b.w.) to cisplatin-intoxicated rats for 14 days attenuated the biochemical and histological signs of nephrotoxicity of cisplatin in a dose-dependent fashion. Ethanol extract at 400 mg/kg decreased the serum level of creatinine (0.65 ± 0.09; Pvariegata at 400 mg/kg (b.w.) exhibited significant and comparable nephroprotective potential to that of the standard polyherbal drug cystone. The statistically (one-way-ANOVA followed by Tukey-Kramer multiple comparison) processed results suggested the protective action of B. variegate whole stem against cisplatin-induced nephropathy.

  15. Antiobesity effect of Bauhinia variegata bark extract on female rats fed on hypercaloric diet

    Directory of Open Access Journals (Sweden)

    Gunasekaran Balamurugan

    2010-03-01

    Full Text Available The present study was carried out to investigate the antiobesity effect of methanolic extract of stem and root barks of Bauhinia variegata Linn in female rats fed with hypercaloric diet. Obesity was induced by administration of hypercaloric diet for 40 days. The plant extract (at the tested doses of 200 and 400 mg/kg exhibited a significant hypolipidemic effect and thus reduced the obesity. The body weight and feed intake was reduced significantly. Treatment of obese animals with the methanolic extract of B. variegata exhibited an increased brain serotonin level and high density lipoprotein with a concomitant decrease in total cholesterol, triglycerides and low density lipo protein. Thus the study indicates that the antiobesity activity of methanolic extract of B. variegata could be attributed to the presence of β-sitosterol in the stems and the tendency of the extract to reduce lipid profile and elicit the brain serotonin level.

  16. Nephroprotective Effect of Bauhinia tomentosa Linn against Cisplatin-Induced Renal Damage.

    Science.gov (United States)

    Kannan, Narayanan; Sakthivel, Kunnathur Murugesan; Guruvayoorappan, Chandrasekaran

    2016-01-01

    Cisplatin (CP) is an important chemotherapeutic drug used for the treatment of a wide variety of solid tumors. However, clinical use of CP has been limited due to its adverse effect of nephrotoxicity. In the present study, we evaluate the nephroprotective effect of Bauhinia tomentosa against CP-induced renal damage in rats. Administration of methonolic extract of B. tomentosa (250 mg/kg b.w.) results in a significant increase in antioxidant enzymes including superoxide dismutase (SOD), glutathione (GSH), and catalase (CAT). Furthermore, treatment with B. tomentosa increased body weight and relative organ weight when compared with that of the CP-induced control group. Moreover, treatment with B. tomentosa extract significantly decreased lipid peroxidation(LPO), serum urea, and creatinine when compared with the CP-induced control group. Thus, the present study highlights the potential role of B. tomentosa and its use as a new protective strategy against CP-induced nephrotoxicity.

  17. Sucrose metabolizing enzymes in cell suspension cultures of Bauhinia forficata, Curcuma zedoaria and Phaseolus vulgaris Enzimas do metabolismo da sacarose em cultura celular de Bauhinia forficata, Curcuma zedoaria e Phaseolus vulgaris

    Directory of Open Access Journals (Sweden)

    Marcia Ometto de Mello

    2001-09-01

    Full Text Available The objective of this work was to study the activity of sucrose metabolizing enzymes in extracts of cell suspension cultures of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. Invertase pathway was identified in the three studied species. Sucrose synthase pathway was also responsible for sucrose metabolism in Curcuma zedoaria and Phaseolus vulgaris cells. Activity values higher than 300 nmol min-1 mg-1 of protein were found for acid and neutral invertases, UDPglucose pyrophosphorylase and phosphoglucomutase in the cell extract of the three plant species. Sucrose synthase showed low activity in Bauhinia forficata cells. As sucrose concentration in the culture medium decreased, sucrose synthase activity increased in C. zedoaria and P. vulgaris cells. The glycolytic enzymes activity gradually reduced at the end of the culture period, when carbohydrate was limited.O objetivo deste trabalho foi estudar as enzimas do metabolismo da sacarose em culturas de célula em suspensão de Bauhinia forficata Link, Curcuma zedoaria Roscoe e Phaseolus vulgaris L. A via da invertase foi identificada nas três espécies estudadas. A via da sacarose sintase também foi responsável pelo metabolismo da sacarose em células de Curcuma zedoaria e Phaseolus vulgaris. Foram encontradas atividades maiores que 300 nmol min-1 mg-1 de proteína das enzimas invertase ácida e alcalina, UDPglicose pirofosforilase e fosfoglicomutase no extrato celular das três espécies de plantas. A sacarose sintase mostrou atividade baixa nas células de Bauhinia forficata. À medida que a concentração de sacarose no meio de cultura diminuiu, a atividade da sacarose sintase aumentou em células de Curcuma zedoaria e Phaseolus vulgaris. Ao final do período de cultura, quando os carboidratos se tornaram limitantes, as atividades das enzimas glicolíticas reduziram-se gradualmente.

  18. Evaluation of anti-ulcerogenic activity in an Aqueous Extract obtained from Bauhinia forficata leaves

    Directory of Open Access Journals (Sweden)

    Giovanna Christina Costa Mazzeo

    2015-09-01

    Full Text Available Bauhinia forficata Link, popularly known as pata-de-vaca, unha-de-vaca, casco-de-vaca, has been widely used in traditional medicine to treat several diseases. Leaves of B. forficata are used in popular medicine as a diuretic, hypoglycemic, tonic and cleanser, and to combat elephantiasis. However, despite the wide range of ethnopharmacological data surrounding the plant, there are no scientific data demonstrating a probable anti-ulcerogenic activity conferred by use of that species. The present study aimed to evaluate the antiulcer properties of an infusion of fresh leaves of B. forficata Link. From the leaves of B. forficata, an Aqueous extract (AqE was obtained and the phytochemical analysis showed the presence of flavonols in this extract. In the gastric ulcer induced by administration of HCl-Ethanol model performed with four different doses of AqE (125, 250, 500 and 1000 mg.Kg-1, the AqE showed significant preventive activity (*p<0.01 at doses of 1000 mg.Kg-1. The antiulcer activity of AqE (1000 mg.Kg-1 could also be demonstrated in experimental models of NSAID-bethanechol (**p<0.001 and absolute ethanol (**p<0.001. Moreover, AqE (1000 mg.Kg-1 promoted a significant increase (**p<0.001 in the amount of gastric mucus. The data presented here demonstrated the potential gastroprotective activity from AqE, possibly attributed to the presence of flavonols in this extract. These results may serve as a support for the development of new treatments related to the pathology of gastric ulcer.Keywords: Gastric ulcer. Cytoprotection. Flavonoids. Bauhinia forficata.  

  19. Anti-HIV-1 integrase and anti-allergic activities of Bauhinia strychnifolia

    Directory of Open Access Journals (Sweden)

    Kingkan Bunluepuech

    2013-12-01

    Full Text Available A stem ethanol extract of Bauhinia strychnifolia and its compounds were investigated for their anti-HIV-1 integrase (IN and anti-allergic activities. From bioassay-guided isolation, five compounds including quercetin (1, 3,5,7,3',5' pentahydroxyflavanonol-3-O-α-L-rhamnopyranoside (2, 3,5,7-trihydroxychromone-3-α-L-rhamnopyranoside (3 and a mixture of β-sitosterol (4 and stigmasterol (5 were isolated. Of the tested samples, compound 1 (quercetin showed the highest activity against HIV-1 IN with an IC50 value of 15.2 µM, followed by 3 (3,5,7-trihydroxychromone-3-α-L-rhamnopyranoside, 4+5 (mixture of β-sitosterol and stigmasterol and 2 (3,5,7,3',5'-pentahydroxyflavanonol-3-O-α-L-rhamnopyranoside with % inhibition of 28.2, 26.2 and 6.7 at 100 µM, respectively. With regard to anti-allergic activity, quercetin (1 possessed the highest anti-allergic activity with an IC50 of 8.1 µM, followed by 3 (3,5,7-trihydroxychromone-3-α-L-rhamnopyranoside and 4+5 (mixture of β-sitosterol and stigmasterol with IC50 values of 52.1 and 77.5 µM, respectively. Whereas compound 2 (3,5,7,3',5'-pentahydroxyflavanonol-3-O-α-L-rhamnopyranoside was inactive. The present study is the first report of chemical constituents and biological activities of Bauhinia strychnifolia.

  20. Amelioration of cisplatin-induced nephrotoxicity by ethanolic extract of Bauhinia purpurea: An in vivo study in rats.

    Science.gov (United States)

    Rana, Md Azmat; Khan, Rahat Ali; Nasiruddin, Mohammad; Khan, Aijaz Ahmed

    2016-01-01

    Our objective is to study the nephroprotective activity and antioxidant potential of Bauhinia purpurea unripe pods and bark against cisplatin-induced nephrotoxicity. Healthy adult albino rats of either sex (150-200 g) were randomly divided into six groups of six animals each Group I (vehicle control) and Group II (negative control). Group III (BBE200) and Group IV (BBE400) were administered the ethanolic extract of Bauhinia purpurea bark in doses of 200 and 400 mg/kg/day p.o., respectively, and Group V (BPE200) and Group VI (BPE400) were administered the ethanolic extract of Bauhinia purpurea unripe pods at doses of 200 and 400 mg/kg/day p.o., respectively. All the treatments were given for nine days. Cisplatin in a single dose of 6 mg/kg i.p. was given on the 4 th day to all groups, except the vehicle control group. On the 10 th day, blood and urine were collected for biochemical tests and the rats were sacrificed. The kidney was removed for histology and lipid peroxidation-antioxidant test. Cisplatin caused nephrotoxicity as evidenced by elevated blood urea, serum creatinine and urine glucose, and there was decreased creatinine clearance in Group II as compared with Group I. Administration of BBE and BPE at doses of 200 and 400 mg/kg in Group III and Group VI caused a dose-dependant reduction in the rise of blood urea, serum creatinine and urine glucose, and there was a dose-dependant increase in creatinine clearance compared with Group II. There was increased catalase and glutathione and decreased malondialdehyde levels in Group II, while BBE 400 (Group IV) and BPE 400 (Group VI) treatments significantly reversed the changes toward normal values. Histological examination of the kidney revealed protection in Group IV and Group VI compared with Group II. The ethanolic extract of Bauhinia purpurea unripe pods and bark has a nephroprotective activity against cisplatin-induced nephrotoxicity in rats.

  1. Chemical composition and in vitro antioxidant activity of hydro-ethanolic extracts from Bauhinia forficata subsp. pruinosa and B. variegata.

    Science.gov (United States)

    Sayago, Carla T M; Camargo, Vanessa B; Barbosa, F; Gularte, Cláudia; Pereira, Geovana; Miotto, Silvia; Cechinel Filho, V; Luiz Puntel, R; Folmer, V; Mendez, A

    2013-03-01

    Bauhinia species are known to have hypoglycemiant and antioxidant activities. Here, hydro-ethanolic leaf extracts from Bauhinia forficata subsp. pruinosa and Bauhinia variegata, collected in a Pampa biome region of Brazil, were investigated to characterize their chromatographic profile, flavonoid content and in vitro antioxidant activity (TBARS and DPH assays). The extracts were obtained from dried and fresh leaves. The total flavonoid content was assessed by spectrophotometric determination, and the results ranged between 572.08 and 1,102.99 μg mL-1. Moreover, flavonoids were more predominant in B. variegata than in B. forficata subsp. pruinosa. HPLC analysis detected a complex profile of phenolic compounds, being the flavonoid kaempferitrin founded B. forficata subsp. pruinosa; in addition, other kaempferol and quercetin derivatives were present. In vitro antioxidant assays demonstrated a different behavior depending on the species, leaf treatment and extract concentration. In general, B. variegata extracts obtained from fresh material presented higher antioxidant potential, which can be attributed to the predominance of flavonoids in their chemical composition.

  2. Chemoprevention and cytotoxic effect of Bauhinia variegata against N-nitrosodiethylamine induced liver tumors and human cancer cell lines.

    Science.gov (United States)

    Rajkapoor, B; Jayakar, B; Murugesh, N; Sakthisekaran, D

    2006-04-06

    The chemopreventive and cytotoxic effect of ethanol extract of Bauhinia variegata (EBV) was evaluated in N-nitrosodiethylamine (DEN, 200 mg/kg) induced experimental liver tumor in rats and human cancer cell lines. Oral administration of ethanol extract of Bauhinia variegata (250 mg/kg) effectively suppressed liver tumor induced by DEN as revealed by decrease in DEN induced elevated levels of serum glutamate pyruvate transaminase (SGPT), serum glutamate oxaloacetate transaminase (SGOT), alkaline phosphatase (ALP), total bilirubin, gamma glutamate transpeptidase (GGTP), lipid peroxidase (LPO), glutathione peroxidase (GPx) and glutathione S-transferase (GST). The extract produced an increase in enzymatic antioxidant (superoxide dismutase and catalase) levels and total proteins when compared to those in liver tumor bearing rats. The histopathological changes of liver samples were compared with respective controls. EBV was found to be cytotoxic against human epithelial larynx cancer (HEp2) and human breast cancer (HBL-100) cells. These results show a significant chemopreventive and cytotoxic effect of ethanol extract of Bauhinia variegata against DEN induced liver tumor and human cancer cell lines.

  3. Superação da dormência em sementes de Bauhinia divaricata L. Overcoming dormancy of Bauhinia divaricata L. seeds

    Directory of Open Access Journals (Sweden)

    Adriana Ursulino Alves

    2004-12-01

    Full Text Available Este trabalho teve como objetivo determinar a metodologia mais eficiente para superação da dormência em sementes de Bauhinia divaricata. As sementes foram submetidas a 12 tratamentos: testemunha - sementes intactas (T1; escarificação mecânica com lixa d'água n. 80 (T2; desponte - pequeno corte na região oposta a micrópila (T3; embebição em água a temperatura ambiente por 24 horas (T4; imersão em água nas temperaturas de 50, 60 e 70ºC/3 minutos (T5, T6 e T7, respectivamente; imersão em água na temperatura de 80ºC/3, 6 e 9 minutos (T8, T9, e T10, respectivamente e imersão em água na temperatura de 100ºC/1 e 2 minutos (T11 e T12, respectivamente. Os efeitos foram avaliados através de testes de emergência e de vigor (primeira contagem, velocidade e tempo médio de emergência, comprimento e massa seca das plântulas e freqüência relativa de emergência. O experimento foi instalado em casa de vegetação e a semeadura feita em bandejas plásticas contendo substrato areia. O delineamento utilizado foi o inteiramente ao acaso, com quatro subamostras de 25 sementes e as médias comparadas pelo teste de Tukey a 5% de probabilidade. Constatou-se que houve diferença significativa entre os tratamentos para todas as variáveis avaliadas, e a causa mais evidente da dormência é a impermeabilidade do tegumento, a qual foi superada eficientemente pelo desponte na região oposta a micrópila.This study was carried out with the aim of determining the most efficient methodology to overcome dormancy in Bauhinia divaricata seeds. The 12 treatments employed were: control - intact seeds (T1; mechanical scarification with sandpaper (T2; coating cutting in the opposite side of micropylar region (T3; immersion in water and at room temperature during 24 hours (T4; immersion in water (50, 60 and 70ºC during three minutes (T5, T6 and T7, respectively; immersion in hot water (80ºC during three, six and nine minutes (T8, T9, and T10, respectively

  4. Phosphorus hosphorus nutrition in the growth of Bauhinia forficata L. seedlings = Adubação fosfatada no crescimento de mudas de Bauhinia forficata L.

    Directory of Open Access Journals (Sweden)

    2008-12-01

    Full Text Available One of the greatest problems in the elaboration of forestation programs using native species is the lack of knowledge about seedling production. This study aimed to evaluate the growth of Bauhinia forficata seedlings submitted to phosphorus levels. Elevenday-old seedlings were transplanted to small tubettes (110 cm3 with pinus bark and vermiculite substratum base. The experiment was conducted in an entirely randomized delineation, with six P treatments: T0-control (substratum without P addition, T1-50, T2-100, T3-150, T4-200 and T5-250 mg dm-3, with five replications and 20 seedlings per replication. After 60 days, the seedlings presented a 98.2% survival rate and good root formation. The height varied in function of P levels, with maximum production up to the Pdose of 250 mg dm-3; 60 days after the transplant, similar behavior for leaf area and dry matter production was observed. Furthermore, the P incorporation increased the phosphorus (P, potassium (K and nitrogen (N accumulation in vegetable tissues. Seedling growth was positively influenced by P levels, and the maximum growth occurredup to the P dose of 250 mg dm-3. In conclusion, this characteristic showed that the species requires high levels of P during initial growth, under the tubette system.Um dos maiores problemas na elaboração de programas de plantios florestais, principalmente com espécies nativas é o escasso conhecimento acerca da produção de mudas. Objetivou-se avaliar ocrescimento de mudas de Bauhinia forficata a doses crescentes de fósforo (P. Mudas com 11 dias de idade foram repicadas para tubetes de 110 cm3 contendo substrato à base de casca de pínus evermiculita média. O experimento foi conduzido no delineamento inteiramente casualizado com seis tratamentos: T0-testemunha, T1-50, T2-100, T3-150, T4-200 e T5-250 mg dm-3 de P. Ao final de 60 dias, as mudas apresentaram um percentual de 98,2% de sobrevivência e excelenteformação radicular. A altura variou

  5. Regeneração in vitro via organogênese direta de Bauhinia cheilantha In vitro regeneration of the Bauhinia cheilantha via organogenesis

    Directory of Open Access Journals (Sweden)

    Ingrid Estefania Mancia de Gutiérrez

    2011-02-01

    Full Text Available Bauhinia cheilantha, conhecida como "pata-de-vaca", possui grande relevância econômica e etnofarmacológica no semiárido brasileiro. Nas suas sementes constatou-se dormência, o que dificulta a obtenção de plantas uniformes e em curto período de tempo, diante disso, o presente trabalho objetivou estabelecer um protocolo de micropropagação para a espécie. Os segmentos cotiledonar e nodal de plântulas emergidas in vitro foram inoculados em meio de cultura WPM, suplementado com diferentes concentrações de 6-benzilaminopurina (BAP, thidiazuron (TDZ ou cinetina (KIN para induzir a regeneração de brotos adventícios. Na fase de enraizamento foram testadas diferentes concentrações de ácido indol-3-butírico (AIB e de carvão ativado. Nos segmentos nodais houve maior capacidade organogênica do que no segmento cotiledonar. O maior número de brotos (4,3 e 2,1 foi obtido com 1,0mg L-1 de TDZ e 1,5mg L-1 de BAP, respectivamente. No entanto, na presença de TDZ foram observadas as menores brotações. A presença de 2,0mg L-1 de AIB com carvão ativado (CA promoveu a maior porcentagem de enraizamento (cerca de 60,0% e maior número de raízes adventícias (2,5. As brotações enraizadas foram transferidas para casa de vegetação e aclimatizadas com sucesso.Bauhinia cheilantha, known as "pata-de-vaca", is of great economic and ethnopharmacological importance in the semiarid Brazilian. Seeds are dormant which makes it difficult to obtain uniform plants in a short time before this, our study aimed to establish a micropropagation protocol for the species. Cotyledonary and nodal segments of seedlings grown in vitro were inoculated on Woody Plant Medium (WPM supplemented with various concentrations of 6-benzylaminopurine (BAP, thidiazuron (TDZ or kinetin (KN to induce adventitious shoot regeneration. In the rooting phase, different concentrations of indole-3-butyric acid (IBA and the activated charcoal were tested. The nodal segments showed

  6. Plantas do gênero Bauhinia: composição química e potencial farmacológico

    Directory of Open Access Journals (Sweden)

    Silva Karina Luize da

    2002-01-01

    Full Text Available Plants of the genus Bauhinia (Leguminosae are widely distributed in most tropical countries and have been frequently used in folk medicine to treat several ailments, especially diabetes. In recent years, the interest in these plants has increased considerably in all world. This review shows the main chemical and pharmacological aspects of these plants. The studies carried out with the extracts and purified compounds from these plants support most of their reported therapeutic properties. It also gives an account of some compounds including terpenes, steroids and flavonoids that were isolated from the genus Bauhinia.

  7. El género Bauhinia (Fabaceae, Caesalpinioideae, Cercideae) en la península de Yucatán (México, Belice y Guatemala)

    OpenAIRE

    Rafael Torres-Colín; Rodrigo Duno de Stefano; Lilia Lorena Can

    2009-01-01

    Se presenta información del género Bauhinia, tribu Cercideae en la provincia biótica de la península de Yucatán. Se reconocen 5 especies nativas: Bauhinia divaricata L., B. erythrocalyx Wunderlin, B. jenningsii P. Wilson, B. herrerae (Britton et Rose) Standl. et Steyerm. y B. ungulata L., así como 2 introducidas: B. monandra Kurz y B. variegata L. Se presenta una clave para identificación, descripciones morfológicas, mapas de distribución, fotografías de las especies e información de los nomb...

  8. Endophytic fungi from medicinal plant Bauhinia forficata: Diversity and biotechnological potential.

    Science.gov (United States)

    Bezerra, Jadson D P; Nascimento, Carlos C F; Barbosa, Renan do N; da Silva, Dianny C V; Svedese, Virgínia M; Silva-Nogueira, Eliane B; Gomes, Bruno S; Paiva, Laura M; Souza-Motta, Cristina M

    2015-03-01

    Bauhinia forficata is native to South America and used with relative success in the folk medicine in Brazil. The diversity, antibacterial activity, and extracellular hydrolytic enzymes of endophytic fungi associated with this plant were studied. Plant samples, which included leaves, sepals, stems, and seeds, were used. Ninety-five endophytic fungal were isolated (18 from leaves, 22 from sepals, 46 from stems, and nine from seeds), comprising 28 species. The most frequently isolated species were Acremonium curvulum (9.5%), Aspergillus ochraceus (7.37%), Gibberella fujikuroi (10.53%), Myrothecium verrucaria (10.53%) and Trichoderma piluliferum (7.37%). Diversity and species richness were higher in stem tissues, and Sorensen's index of similarity between the tissues was low. Eleven fungi showed antibacterial activity. Aspergillus ochraceus , Gibberella baccata , Penicillium commune , and P. glabrum were those with the greatest antibacterial activity against Staphylococcus aureus and/or Streptococcus pyogenes . Thirteen species showed proteolytic activity, particularly Phoma putaminum . Fourteen species were cellulase positive, particularly the Penicillium species and Myrmecridium schulzeri . All isolates tested were xylanase positive and 10 showed lipolytic activity, especially Penicillium glabrum . It is clear that the endophytic fungi from B. forficata have potential for the production of bioactive compounds and may be a source of new therapeutic agents for the effective treatment of diseases in humans, other animals, and plants. To our knowledge, this is the first study of endophytic fungi from different tissues of B. forficata and their biotechnological potential.

  9. Endophytic fungi from medicinal plant Bauhinia forficata: Diversity and biotechnological potential

    Directory of Open Access Journals (Sweden)

    Jadson D.P. Bezerra

    2015-03-01

    Full Text Available Bauhinia forficata is native to South America and used with relative success in the folk medicine in Brazil. The diversity, antibacterial activity, and extracellular hydrolytic enzymes of endophytic fungi associated with this plant were studied. Plant samples, which included leaves, sepals, stems, and seeds, were used. Ninety-five endophytic fungal were isolated (18 from leaves, 22 from sepals, 46 from stems, and nine from seeds, comprising 28 species. The most frequently isolated species were Acremonium curvulum (9.5%, Aspergillus ochraceus (7.37%, Gibberella fujikuroi (10.53%, Myrothecium verrucaria (10.53% and Trichoderma piluliferum(7.37%. Diversity and species richness were higher in stem tissues, and Sorensen’s index of similarity between the tissues was low. Eleven fungi showed antibacterial activity. Aspergillus ochraceus, Gibberella baccata, Penicillium commune, and P. glabrum were those with the greatest antibacterial activity against Staphylococcus aureus and/or Streptococcus pyogenes. Thirteen species showed proteolytic activity, particularly Phoma putaminum. Fourteen species were cellulase positive, particularly the Penicillium species and Myrmecridium schulzeri. All isolates tested were xylanase positive and 10 showed lipolytic activity, especially Penicillium glabrum. It is clear that the endophytic fungi from B. forficata have potential for the production of bioactive compounds and may be a source of new therapeutic agents for the effective treatment of diseases in humans, other animals, and plants. To our knowledge, this is the first study of endophytic fungi from different tissues of B. forficata and their biotechnological potential.

  10. Initial growth of Bauhinia variegata trees under different colored shade nets and light conditions

    Directory of Open Access Journals (Sweden)

    Renata Bachin Mazzini-Guedes

    2014-12-01

    Full Text Available Bauhinia variegata and B. variegata var. candida, commonly known as orchid trees, are small sized trees widely used for urban forestry and landscaping. Adult plants grow under full sun; in Brazil, however, seedlings are generally cultivated in commercial nurseries under natural half-shading. The objective of this study was to evaluate the influence of different colored shade nets and light conditions on the initial growth of B. variegata and B. variegata var. candida. The influence of six light conditions (red net with 50% shading; blue net with 50% shading; black net with 70% shading; black net with 50% shading; black net with 30% shading; and full sun on the initial growth of B. variegata and B. variegata var. candida were evaluated along 160 days, and growth relationships were calculated. Seedlings showed more efficiency on the use of photoassimilated compounds when grown under full sun. Such condition is the most appropriate for seedling production of B. variegata and B. variegata var. candida, contradicting what has been performed in practice.

  11. Morphoanatomical and physiological changes in Bauhinia variegata L. as indicators of herbicide diuron action.

    Science.gov (United States)

    Lima, Dêmily Andrômeda de; Müller, Caroline; Costa, Alan Carlos; Batista, Priscila Ferreira; Dalvi, Valdnéa Casagrande; Domingos, Marisa

    2017-03-27

    The wide use of the herbicide diuron has compromised surrounding uncultivated areas, resulting in acute and/or chronic damage to non-target plants. Thus, the aim of this research was to evaluate physiological and morphoanatomical responses in Bauhinia variegata L. plants to different doses of diuron. Seedlings of 90-day-old B. variegata were transplanted into 10liter pots. After an acclimation period (about 30 days), treatments consisting of different diuron doses were applied: 0 (control), 400, 800, 1600, and 2400g ai ha(-1). The experiment was conducted in a randomized block design in a 5×5 factorial scheme with five doses of diuron five evaluation times, and five replicates per treatment. Anatomical and physiological injuries were observed in leaves of Bauhina variegata 10h after diuron application. Disruption of waxes was observed on both sides of the leaves of plants exposed since the lowest dose. Plasmolysis in cells were observed in treated leaves; more severe damage was observed in plants exposed to higher doses, resulting in rupture of epidermis. The diuron herbicide also caused gradual reduction in the gas exchange and chlorophyll fluorescence variables. Among the morphoanatomical and physiological variables analyzed, the non-invasive ones (e.g., ETR, YII, and Fv/Fm) may be used as biomarkers of diuron action in association with visible symptoms. In addition, changes in leaf blade waxes and chlorophyll parenchyma damage may also be considered additional leaf biomarkers of diuron herbicide action.

  12. Mixture design optimization of extraction and mobile phase media for fingerprint analysis of Bauhinia variegata L.

    Science.gov (United States)

    Delaroza, Fernanda; Scarminio, Ieda Spacino

    2008-04-01

    Two statistical mixture designs were used to optimize the proportions of solvents used in both the extraction medium and the reversed liquid chromatographic mobile phase to improve the quality of chromatographic fingerprints of Bauhinia variegata L extracts. For modeling, the number of peaks was used as a measure of fingerprint information. Three mobile phases, each with a chromatographic strength of two, gave good results. A methanol/water (77:23 v/v) mixture resulted in 17 peaks in the chromatographic fingerprint whereas acetonitrile/water (64.5:35.5 v/v) and methanol/acetonitrile/water (35:35:30 v/v/v) mixtures resulted in 18 and 20 peaks, respectively. The corresponding optimum solvent compositions to extract chemical substances for these three mobile phases were ethanol/acetone (25:75 v/v/v) and dichloromethane/acetone (70:30 v/v) mixtures, and pure dichloromethane, respectively. The mixture designs are useful for understanding the influence of different solvents on the strengths of the extraction medium and the mobile phase.

  13. Cloning, expression and characterization of Bauhinia variegata trypsin inhibitor BvTI.

    Science.gov (United States)

    de Souza, Adriana F; Torquato, Ricardo J S; Tanaka, Aparecida S; Sampaio, Claudio A M

    2005-11-01

    A Bauhinia variegata trypsin inhibitor (BvTI) cDNA fragment was cloned into the pCANTAB5E phagemid. The clone pAS 1.1.3 presented a cDNA fragment of 733 bp, including the coding region for a mature BvTI protein comprising 175 amino acid residues. The deduced amino acid sequence for BvTI confirmed it as a member of the Kunitz-type plant serine proteinase inhibitor family. The BvTI cDNA fragment encoding the mature form was cloned into the expression vector, pET-14b, and ex-pressed in E. coli BL21 (DE3) pLysS in an active form. In addition, a BvTI mutant form, r(mut)BvTI, with a Pro residue as the fifth amino acid in place of Leu, was produced. The recombinant proteins, rBvTI and r(mut)BvTI, were purified on a trypsin-Sepharose column, yielding 29 and 1.44 mg/l of active protein, respectively, and showed protein bands of approximately 21.5 kDa by SDS-PAGE. Trypsin inhibition activity was comparable for rBvTI (Ki=4 nM) and r(mut)BvTI (Ki=6 nM). Our data suggest that the Leu to Pro substitution at the fifth amino-terminal residue was not crucial for proteinase inhibition.

  14. Antiinflammatory activities of flavonoids and a triterpene caffeate isolated from Bauhinia variegata.

    Science.gov (United States)

    Rao, Yerra Koteswara; Fang, Shih-Hua; Tzeng, Yew-Min

    2008-07-01

    In the continuing search for novel antiinflammatory agents, six flavonoids, namely kaempferol (1), ombuin (2), kaempferol 7,4'-dimethyl ether 3-O-beta-D-glucopyranoside (3), kaempferol 3-O-beta-D-glucopyranoside (4), isorhamnetin 3-O-beta-D-glucopyranoside (5) and hesperidin (6), together with one triterpene caffeate, 3beta-trans-(3,4-dihydroxycinnamoyloxy)olean-12-en-28-oic acid (7) were isolated from the non-woody aerial parts of Bauhinia variegata. Compounds 1-7 were evaluated as inhibitors of some macrophage functions involved in the inflammatory process. These seven compounds significantly and dose dependently inhibited lipopolysaccharide (LPS) and interferon (IFN)-gamma induced nitric oxide (NO), and cytokines [tumor necrosis factor (TNF)-alpha and interleukin (IL)-12]. The concentration causing a 50% inhibition (IC50) of NO, TNF-alpha and IL-12 production by compounds 1, 2 and 7 was approximately 30, 50 and 10 microM, respectively, while at 50, 200 and 40 microM compounds 3, 4, and 5, 6 showed 15-30% inhibition, respectively. On the other hand, compounds 3 and 7 showed no inhibitory effect, while compounds 1, 4-6 reduced by around 10-30% the synthesis of NO by macrophages, when inducible NO synthase was already expressed with LPS/IFN-gamma for 24 h. These experimental findings lend pharmacological support to the suggested folkloric uses of the plant B. variegata in the management of inflammatory conditions.

  15. Nephroprotective effect of Bauhinia variegata (linn. whole stem extract against cisplatin-induced nephropathy in rats

    Directory of Open Access Journals (Sweden)

    Saumya R Pani

    2011-01-01

    Full Text Available The nephroprotective activity of the ethanolic extract of Bauhinia variegata (Linn. whole stem against cisplatin-induced nephropathy was investigated by an in vivo method in rats. Acute nephrotoxicity was induced by i.p. injection of cisplatin (7 mg/kg of body weight (b.w.. Administration of ethanol extract at dose levels of 400 and 200 mg/kg (b.w. to cisplatin-intoxicated rats for 14 days attenuated the biochemical and histological signs of nephrotoxicity of cisplatin in a dose-dependent fashion. Ethanol extract at 400 mg/kg decreased the serum level of creatinine (0.65 ± 0.09; P<0.001 and urea (32.86 ± 5.88; P<0.001 associated with a significant increase in body weight (7.16 ± 1.10; P<0.001 and urine volume output (11.95 ± 0.79; P<0.05 as compared to the toxic control group. The ethanol extract of B. variegata at 400 mg/kg (b.w. exhibited significant and comparable nephroprotective potential to that of the standard polyherbal drug cystone. The statistically (one-way-ANOVA followed by Tukey-Kramer multiple comparison processed results suggested the protective action of B. variegate whole stem against cisplatin-induced nephropathy.

  16. Bauhinia variegata Leaf Extracts Exhibit Considerable Antibacterial, Antioxidant, and Anticancer Activities

    Directory of Open Access Journals (Sweden)

    Amita Mishra

    2013-01-01

    Full Text Available The present study reports the phytochemical profiling, antimicrobial, antioxidant, and anticancer activities of Bauhinia variegata leaf extracts. The reducing sugar, anthraquinone, and saponins were observed in polar extracts, while terpenoids and alkaloids were present in nonpolar and ethanol extracts. Total flavonoid contents in various extracts were found in the range of 11–222.67 mg QE/g. In disc diffusion assays, petroleum ether and chloroform fractions exhibited considerable inhibition against Klebsiella pneumoniae. Several other extracts also showed antibacterial activity against pathogenic strains of E. coli, Proteus spp. and Pseudomonas spp. Minimum bactericidal concentration (MBC values of potential extracts were found between 3.5 and 28.40 mg/mL. The lowest MBC (3.5 mg/mL was recorded for ethanol extract against Pseudomonas spp. The antioxidant activity of the extracts was compared with standard antioxidants. Dose dependent response was observed in reducing power of extracts. Polar extracts demonstrated appreciable metal ion chelating activity at lower concentrations (10–40 μg/mL. Many extracts showed significant antioxidant response in beta carotene bleaching assay. AQ fraction of B. variegata showed pronounced cytotoxic effect against DU-145, HOP-62, IGR-OV-1, MCF-7, and THP-1 human cancer cell lines with 90–99% cell growth inhibitory activity. Ethyl acetate fraction also produced considerable cytotoxicity against MCF-7 and THP-1 cell lines. The study demonstrates notable antibacterial, antioxidant, and anticancer activities in B. variegata leaf extracts.

  17. Preparation and biological properties of a melibiose binding lectin from Bauhinia variegata seeds.

    Science.gov (United States)

    Lin, Peng; Ng, Tzi Bun

    2008-11-26

    A dimeric 64-kDa melibiose-binding lectin was isolated from the seeds of Bauhinia variegata. The isolation procedure comprised affinity chromatography on Affi-gel blue gel, ion exchange chromatography on Mono Q, and gel filtration on Superdex 75. The lectin was adsorbed on the first two chromatographic media. Its hemagglutinating activity was stable after 30-min exposure to temperatures up to 70 degrees C. Since lectins may demonstrate biological activities such as antiproliferative, immunomodulatory, antifungal, antiviral, and HIV-1 reverse transcriptase inhibitory activities, the isolated lectin was tested for these activities. It was found that the lectin inhibited proliferation in hepatoma HepG2 cells and breast cancer MCF7 cells with an IC(50) of 1.4 microM and 0.18 microM, respectively. HIV-1 reverse transcriptase activity was inhibited with an IC(50) of 1.02 microM. The lectin and concanavalin A (Con A) evoked maximal mitogenic response from mouse splenocytes at similar concentrations, but the maximal response to B. variegata lectin was only 1/5 of that induced by Con A in magnitude. B. variegata lectin was devoid of antifungal activity.

  18. Bauhinia variegata leaf extracts exhibit considerable antibacterial, antioxidant, and anticancer activities.

    Science.gov (United States)

    Mishra, Amita; Sharma, Amit Kumar; Kumar, Shashank; Saxena, Ajit K; Pandey, Abhay K

    2013-01-01

    The present study reports the phytochemical profiling, antimicrobial, antioxidant, and anticancer activities of Bauhinia variegata leaf extracts. The reducing sugar, anthraquinone, and saponins were observed in polar extracts, while terpenoids and alkaloids were present in nonpolar and ethanol extracts. Total flavonoid contents in various extracts were found in the range of 11-222.67 mg QE/g. In disc diffusion assays, petroleum ether and chloroform fractions exhibited considerable inhibition against Klebsiella pneumoniae. Several other extracts also showed antibacterial activity against pathogenic strains of E. coli, Proteus spp. and Pseudomonas spp. Minimum bactericidal concentration (MBC) values of potential extracts were found between 3.5 and 28.40 mg/mL. The lowest MBC (3.5 mg/mL) was recorded for ethanol extract against Pseudomonas spp. The antioxidant activity of the extracts was compared with standard antioxidants. Dose dependent response was observed in reducing power of extracts. Polar extracts demonstrated appreciable metal ion chelating activity at lower concentrations (10-40 μg/mL). Many extracts showed significant antioxidant response in beta carotene bleaching assay. AQ fraction of B. variegata showed pronounced cytotoxic effect against DU-145, HOP-62, IGR-OV-1, MCF-7, and THP-1 human cancer cell lines with 90-99% cell growth inhibitory activity. Ethyl acetate fraction also produced considerable cytotoxicity against MCF-7 and THP-1 cell lines. The study demonstrates notable antibacterial, antioxidant, and anticancer activities in B. variegata leaf extracts.

  19. Bauhinia forficata Link authenticity using flavonoids profile: relation with their biological properties.

    Science.gov (United States)

    Ferreres, Federico; Gil-Izquierdo, Angel; Vinholes, Juliana; Silva, Sara T; Valentão, Patrícia; Andrade, Paula B

    2012-09-15

    HPLC-DAD-ESI/MS(n) was used to ascertain the authenticity of two certified and two commercial Bauhinia forficata Link samples. Different flavonoids profiles were obtained, involving 39 compounds. Just kaempferol-3-O-(2-rhamnosyl)rutinoside was found in all analysed samples. Five compounds were common to the certified samples of B. forficata Link and B. forficata Link subsp. pruinosa (Vogel) Fortunato & Wunderlin, being kaempferol derivatives the most representative ones. The phenolic composition of B. forficata Link subsp. pruinosa (Vogel) Fortunato & Wunderlin is described herein for the first time, accounting for eight compounds, while 10 new compounds were identified in B. forficata Link. Commercial B. forficata Link showed higher contents of quercetin derivatives, in addition to the presence of myricetin derivatives and flavonoids-(galloyl)glycosides, for which the MS fragmentation pattern is reported for the first time. B. forficata Link and the two commercial samples were able to inhibit α-glucosidase, with EC(50) values lower than that found for acarbose. Mild effects on cholinesterases were observed with the certified samples, while commercial ones were more effective. The same behaviour was observed concerning the scavenging of DPPH, nitric oxide and superoxide radicals. The presence of high contents of quercetin derivatives in commercial samples seems to directly influence their biological properties. The differences between phenolic profiles and their relation with the authenticity of commercial samples are discussed.

  20. Antimicrobial, antityrosinase and brine shrimp lethality test of Bauhinia rufescens Lam (Fabaceae)

    Institute of Scientific and Technical Information of China (English)

    Aminu Muhammad; Hasnah Mohd Sirat

    2013-01-01

    Objective: To evaluate leaves and stem bark extracts of Bauhinia rufescens for antimicrobial activities, tyrosinase enzyme inhibition potentials and lethality to brine shrimp larvae (Artemiasalina ). Methods: The plant materials were extracted based on polarity gradient of petroleum ether, ethyl acetate and methanol. The extracts were investigated for their antimicrobial, antityrosinase and cytotoxicity potentials.Results:The antimicrobial results indicated that the extracts inhibited the microbial growth in the range of 6.00-12.57 mm (450-1 800 µg/mL) for bacterial strains and 7.33-14.03 mm (225-1 800 µg/mL) for fungal strains. While the tyrosinase enzyme inhibition assay of the extracts showed that both the petroleum ether leaves and stem bark extracts exhibited a moderate inhibition (39.60%and 39.89%) towards the action of mushroom tyrosinase enzyme on L-DOPA. In the brine shrimp lethality assay, ethyl acetate and methanol extracts of the leaves of the plant were found toxic to the Artemia salina with IC50 values of 0.059 mg/mL and 0.389 mg/mL. However, both the petroleum ether and ethyl acetate extracts of the stem bark were nontoxic to the larvae.Conclusions:The result of the present study suggest the presence of phytochemicals possessing antimicrobial and antityrosinase activity as well as cytotoxic agents.

  1. Otimização de metodologia analítica para o doseamento de flavonoides de Bauhinia cheilantha (Bongard Steudel Optimization of analytic methodologies for quantifying flavonoids of Bauhinia cheilantha (Bongard Steudel

    Directory of Open Access Journals (Sweden)

    Tadeu José da Silva Peixoto Sobrinho

    2010-01-01

    Full Text Available The present study examined the optimization of stabilization and extraction processes of the flavonoids of Bauhinia cheilantha (Bongard Steudel. Four drying temperatures (room temperature, 40, 60 and 80 ºC and seven extraction systems (distilled water, 100% methanol, 80% methanol, 100% ethanol, 80% ethanol, 80% acetone and 60% acetone were examined. The results demonstrated a reduction in flavonoid levels with increasing drying temperatures; and 80% acetone, 80% ethanol, and methanol p.a extraction systems were found to be most efficient and its weren't differents statisticaly (p<0.05.

  2. Caracterização química e bioquímica de sementes de Bauhinia variegata L. Chemical and biochemical characterization of Bauhinia variegata L. seeds

    Directory of Open Access Journals (Sweden)

    Luciano S. Pinto

    2005-09-01

    Full Text Available Sementes quiescentes de Bauhinia variegata foram submetidas a caracterização bioquímica, por meio de análise elementar, fracionamento de proteínas e atividade hemaglutinante. A análise elementar mostrou grande quantidade de proteína total e de lipídeos, com 29,41 e 14,89%, respectivamente. O ácido linoléico foi o mais encontrado na constituição lipídica das sementes e a composição mineral ficou dentro de níveis aceitáveis para o consumo humano. As diferentes frações protéicas (albuminas, globulinas, prolaminas, glutelinas ácidas e básicas apresentaram atividade hemaglutinante contra hemácias tratadas e não-tratadas com enzimas proteolíticas, mas a maior atividade hemaglutinante específica foi evidenciada na fração globulínica; já nas frações glutelinas ácidas e albuminas, esta atividade é maior quando se utilizam hemácias de coelho previamente tratadas com tripsina e papaína, respectivamente. Assim, por apresentarem alto valor energético, as sementes de Bauhinia variegata são uma possível fonte opcional na alimentação.Seeds of Bauhinia variegata were submitted to biochemical characterization through elementary analysis, protein fractioning and hemaglutinanting activity. The elementary analysis of seed showed high protein and lipid contents, with 29.41 and 14.89%, respectively. The linolenic acid was found in the lipidic constitution of the seeds and the mineral composition remained with in acceptable levels for the human consumption. The specific hemaglutinanting activity from different fractions of proteins (albumin, globulin, prolamin, glutelin acid and alkaline demonstrated hemaglutinanting activity against native and enzyme treated rabbit erythrocytes. However, the fraction globulins showed the largest specific hemaglutinanting activity. Acid glutelin and albumin had a larger specific hemaglutinanting activity against tripisin-treated and papain-treated rabbit erythrocytes, respectively. Thus, for

  3. In-Vitro Activity of Saponins of Bauhinia Purpurea Madhuca Longifolia Celastrus Paniculatus and Semecarpus Anacardium on Selected Oral Pathogens

    Directory of Open Access Journals (Sweden)

    K. S. Jyothi

    2012-01-01

    Full Text Available Objective: Dental caries, periodontitis and other mucosal diseases are caused by a complex community of microorganisms. This study aimed to investigate the antimicrobial properties of saponins of four important oil yielding medicinal plant extracts on selected oral pathogens that are involved in such diseases.Materials and Methods: Saponins were extracted from Bauhinia purpurea, Madhuca longifolia, Celastrus paniculatus and Semecarpus anacardium and purified. Antimicrobial properties of these saponins against Streptococcus mutans, Streptococcus mitis, Streptococcus salivarius, Staphylococcus aureus and Lactobacillus acidophilus were determined using well diffusion method. The minimum inhibitory concentration (MIC was determined as the lowest concentration of saponins inhibiting bacterial growth after 14 h of incubation at 37°C. The bactericidal activity was evaluated using the viable cell count method.Results: The minimum inhibitory concentration (MIC and minimum bactericidal concentration (MBC of Madhuca longifolia saponin on Streptococcus mutans MTCC 890, Streptococcus mitis and Staphylococcus aureus was 18.3 ± 0.15/34.4 ± 0.24 µg/ml, 19.0 ± 0.05/32.2 ± 0.0 µg/ml and 21.2 ± 0.35/39.0 ± 0.30 µg/ml, respectively and Bauhinia purpurea saponin on Streptococcus mutans MTCC 890, Staphylococcus aureus and Lactobacillus acidophilus was 26.4 ± 0.20/43.0 ± 0.40 µg/ml, 29.0 ± 0.30/39.6 ± 0.12 µg/ml and 20.2 ± 0.05/36.8 ± 0.23 µg/ml, respectively.Conclusion: The strong antimicrobial activity of Madhuca longifolia and Bauhinia purpurea may be due to the presence of complex triterpenoid saponins, oleanane type triterpenoid glycosides or atypical pentacyclic triterpenoid saponin. Hence, these extracted saponins may be used in food and oral products to prevent and control oral diseases.

  4. Structure predictions of two Bauhinia variegata lectins reveal patterns of C-terminal properties in single chain legume lectins.

    Science.gov (United States)

    Moreira, Gustavo M S G; Conceição, Fabricio R; McBride, Alan J A; Pinto, Luciano da S

    2013-01-01

    Bauhinia variegata lectins (BVL-I and BVL-II) are single chain lectins isolated from the plant Bauhinia variegata. Single chain lectins undergo post-translational processing on its N-terminal and C-terminal regions, which determines their physiological targeting, carbohydrate binding activity and pattern of quaternary association. These two lectins are isoforms, BVL-I being highly glycosylated, and thus far, it has not been possible to determine their structures. The present study used prediction and validation algorithms to elucidate the likely structures of BVL-I and -II. The program Bhageerath-H was chosen from among three different structure prediction programs due to its better overall reliability. In order to predict the C-terminal region cleavage sites, other lectins known to have this modification were analysed and three rules were created: (1) the first amino acid of the excised peptide is small or hydrophobic; (2) the cleavage occurs after an acid, polar, or hydrophobic residue, but not after a basic one; and (3) the cleavage spot is located 5-8 residues after a conserved Leu amino acid. These rules predicted that BVL-I and -II would have fifteen C-terminal residues cleaved, and this was confirmed experimentally by Edman degradation sequencing of BVL-I. Furthermore, the C-terminal analyses predicted that only BVL-II underwent α-helical folding in this region, similar to that seen in SBA and DBL. Conversely, BVL-I and -II contained four conserved regions of a GS-I association, providing evidence of a previously undescribed X4+unusual oligomerisation between the truncated BVL-I and the intact BVL-II. This is the first report on the structural analysis of lectins from Bauhinia spp. and therefore is important for the characterisation C-terminal cleavage and patterns of quaternary association of single chain lectins.

  5. Structure predictions of two Bauhinia variegata lectins reveal patterns of C-terminal properties in single chain legume lectins.

    Directory of Open Access Journals (Sweden)

    Gustavo M S G Moreira

    Full Text Available Bauhinia variegata lectins (BVL-I and BVL-II are single chain lectins isolated from the plant Bauhinia variegata. Single chain lectins undergo post-translational processing on its N-terminal and C-terminal regions, which determines their physiological targeting, carbohydrate binding activity and pattern of quaternary association. These two lectins are isoforms, BVL-I being highly glycosylated, and thus far, it has not been possible to determine their structures. The present study used prediction and validation algorithms to elucidate the likely structures of BVL-I and -II. The program Bhageerath-H was chosen from among three different structure prediction programs due to its better overall reliability. In order to predict the C-terminal region cleavage sites, other lectins known to have this modification were analysed and three rules were created: (1 the first amino acid of the excised peptide is small or hydrophobic; (2 the cleavage occurs after an acid, polar, or hydrophobic residue, but not after a basic one; and (3 the cleavage spot is located 5-8 residues after a conserved Leu amino acid. These rules predicted that BVL-I and -II would have fifteen C-terminal residues cleaved, and this was confirmed experimentally by Edman degradation sequencing of BVL-I. Furthermore, the C-terminal analyses predicted that only BVL-II underwent α-helical folding in this region, similar to that seen in SBA and DBL. Conversely, BVL-I and -II contained four conserved regions of a GS-I association, providing evidence of a previously undescribed X4+unusual oligomerisation between the truncated BVL-I and the intact BVL-II. This is the first report on the structural analysis of lectins from Bauhinia spp. and therefore is important for the characterisation C-terminal cleavage and patterns of quaternary association of single chain lectins.

  6. Amelioration of cisplatin-induced nephrotoxicity by ethanolic extract of Bauhinia purpurea: An in vivo study in rats

    Directory of Open Access Journals (Sweden)

    Md Azmat Rana

    2016-01-01

    Full Text Available Our objective is to study the nephroprotective activity and antioxidant potential of Bauhinia purpurea unripe pods and bark against cisplatin-induced nephrotoxicity. Healthy adult albino rats of either sex (150-200 g were randomly divided into six groups of six animals each Group I (vehicle control and Group II (negative control. Group III (BBE200 and Group IV (BBE400 were administered the ethanolic extract of Bauhinia purpurea bark in doses of 200 and 400 mg/kg/day p.o., respectively, and Group V (BPE200 and Group VI (BPE400 were administered the ethanolic extract of Bauhinia purpurea unripe pods at doses of 200 and 400 mg/kg/day p.o., respectively. All the treatments were given for nine days. Cisplatin in a single dose of 6 mg/kg i.p. was given on the 4 th day to all groups, except the vehicle control group. On the 10 th day, blood and urine were collected for biochemical tests and the rats were sacrificed. The kidney was removed for histology and lipid peroxidation-antioxidant test. Cisplatin caused nephrotoxicity as evidenced by elevated blood urea, serum creatinine and urine glucose, and there was decreased creatinine clearance in Group II as compared with Group I. Administration of BBE and BPE at doses of 200 and 400 mg/kg in Group III and Group VI caused a dose-dependant reduction in the rise of blood urea, serum creatinine and urine glucose, and there was a dosedependant increase in creatinine clearance compared with Group II. There was increased catalase and glutathione and decreased malondialdehyde levels in Group II, while BBE 400 (Group IV and BPE 400 (Group VI treatments significantly reversed the changes toward normal values. Histological examination of the kidney revealed protection in Group IV and Group VI compared with Group II. The ethanolic extract of Bauhinia purpurea unripe pods and bark has a nephroprotective activity against cisplatin-induced nephrotoxicity in rats.

  7. [Mites (Acari: Arachnida) associated with Bauhinia variegata L. (Leguminosae) in northeast of State of São Paulo, Brazil].

    Science.gov (United States)

    Daud, Rodrigo D; Feres, Reinaldo J F; Buosi, Renato

    2007-01-01

    The occurrence of mites on Bauhinia variegata L., a species introduced in Brazil as ornamental, was studied. Two plants of this species were sampled monthly from May 2000 to April 2001. A total of 8,482 mites, belonging to 25 species in 11 families were collected. The abundance of phytophagous mites was higher, being Lorryia formosa Cooreman the dominant species. The dominance of L. formosa might be caused by stress conditions of sampled plants and low number of predaceous mites on those plants.

  8. Bauhinia variegata (Caesalpiniaceae) leaf extract: An effective treatment option in type I and type II diabetes.

    Science.gov (United States)

    Kulkarni, Yogesh A; Garud, Mayuresh S

    2016-10-01

    Among various metabolic disorders, diabetes mellitus is one of the most common disorder. Present study was designed to evaluate the effectiveness of aqueous extract of Bauhinia variegata leaves (AE) in animal models of type I and type II diabetes. Type I diabetes was induced by streptozotocin at the dose of 55mg/kg (i.p.) in male Sprague Dawley rats while type II diabetes was induced by high fat diet and streptozotocin at the dose of 35mg/kg (i.p.). Diabetic animals were treated with AE at the dose of 250, 500 and 1000mg/kg. Glipizide (5mg/kg) was used as standard treatment drug. Treatment was given for 28days. Parameters evaluated were body weight, plasma glucose, cholesterol, triglyceride, aspartate aminotransferase, alanine transaminase, alkaline phosphatase, total proteins, albumin, creatinine and bun urea nitrogen. In type II diabetes, high density lipoprotein levels in plasma and plasma insulin level were also evaluated. Histopathological study of pancreases were carried out in type I study. AE showed significant decrease in plasma glucose significantly. AE was also found to decrease cholesterol, triglyceride, creatinine and blood urea nitrogen level in both types of diabetes. AE did not show any significant effect on plasma levels of aspartate aminotransferase, alanine transaminase, alkaline phosphatase. AE was found to increase the albumin and total protein levels. Histopathological study showed that AE decreases the necrotic changes in the pancreatic tissue. Aqueous extract of B. variegata leaves was found effective in treatment of both type I and type II diabetes.

  9. Isolation and intracellular localization of insulin-like proteins from leaves of Bauhinia variegata.

    Science.gov (United States)

    Azevedo, C R; Maciel, F M; Silva, L B; Ferreira, A T S; da Cunha, M; Machado, O L T; Fernandes, K V S; Oliveira, A E A; Xavier-Filho, J

    2006-11-01

    Evidence based on immunological cross-reactivity and anti-diabetic properties has suggested the presence of insulin-like peptides in plants. The objective of the present study was to investigate the presence of insulin-like proteins in the leaves of Bauhinia variegata ("pata-de-vaca", "mororó"), a plant widely utilized in popular medicine as an anti-diabetic agent. We show that an insulin-like protein was present in the leaves of this plant. A chloroplast protein with a molecular mass similar to that of bovine insulin was extracted from 2-mm thick 15% SDS-PAGE gels and fractionated with a 2 x 24 cm Sephadex G-50 column. The activity of this insulin-like protein (0.48 mg/mL) on serum glucose levels of four-week-old Swiss albino (CF1) diabetic mice was similar to that of commercial swine insulin used as control. Further characterization of this molecule by reverse-phase hydrophobic HPLC chromatographic analysis as well as its antidiabetic activity on alloxan-induced mice showed that it has insulin-like properties. Immunolocalization of the insulin-like protein in the leaves of B. variegata was performed by transmission electron microscopy using a polyclonal anti-insulin human antibody. Localization in the leaf blades revealed that the insulin-like protein is present mainly in chloroplasts where it is also found associated with crystals which may be calcium oxalate. The presence of an insulin-like protein in chloroplasts may indicate its involvement in carbohydrate metabolism. This finding has strengthened our previous results and suggests that insulin-signaling pathways have been conserved through evolution.

  10. Isolation and intracellular localization of insulin-like proteins from leaves of Bauhinia variegata

    Directory of Open Access Journals (Sweden)

    C.R. Azevedo

    2006-11-01

    Full Text Available Evidence based on immunological cross-reactivity and anti-diabetic properties has suggested the presence of insulin-like peptides in plants. The objective of the present study was to investigate the presence of insulin-like proteins in the leaves of Bauhinia variegata ("pata-de-vaca", "mororó", a plant widely utilized in popular medicine as an anti-diabetic agent. We show that an insulin-like protein was present in the leaves of this plant. A chloroplast protein with a molecular mass similar to that of bovine insulin was extracted from 2-mm thick 15% SDS-PAGE gels and fractionated with a 2 x 24 cm Sephadex G-50 column. The activity of this insulin-like protein (0.48 mg/mL on serum glucose levels of four-week-old Swiss albino (CF1 diabetic mice was similar to that of commercial swine insulin used as control. Further characterization of this molecule by reverse-phase hydrophobic HPLC chromatographic analysis as well as its antidiabetic activity on alloxan-induced mice showed that it has insulin-like properties. Immunolocalization of the insulin-like protein in the leaves of B. variegata was performed by transmission electron microscopy using a polyclonal anti-insulin human antibody. Localization in the leaf blades revealed that the insulin-like protein is present mainly in chloroplasts where it is also found associated with crystals which may be calcium oxalate. The presence of an insulin-like protein in chloroplasts may indicate its involvement in carbohydrate metabolism. This finding has strengthened our previous results and suggests that insulin-signaling pathways have been conserved through evolution.

  11. Phytochemical composition and antinociceptive activity of Bauhinia glauca subsp. hupehana in rats.

    Directory of Open Access Journals (Sweden)

    Jinlong Xu

    Full Text Available In traditional medicine, Bauhinia glauca subsp. hupehana has long been used as an analgesic agent in China. The aim of this study was to evaluate the antinociceptive activity of the ethanol extract of the aerial parts of B. glauca subsp. hupehana (BHE in rats and its chemical fingerprint. The antinociceptive activity of BHE was assessed in mice using chemically and heat-induced pain models, such as the acetic acid-induced writhing, hot plate, tail-flick and glutamate tests. Naltrexone hydrochloride, a non-selective opioid receptor antagonist, was utilized to determine the involvement of the opioid system. In addition to this, the involvements of the cGMP and ATP-sensitive K+ channel pathways were also detected using methylene blue and glibenclamide. The oral administration of BHE (at doses of 50, 100 and 200 mg/kg produced significant and dose-related inhibitions in both the chemically and heat-induced pain models. Interestingly, in the abdominal constriction test, when the dose of BHE was increased to 800 mg/kg (p.o., n = 10, the inhibition rate was 100%. The antinociceptive mechanism may involve the cGMP pathway and ATP sensitive K+ channel pathway. The central antinociceptive effect was not antagonized by naltrexone. One phenolic acid, one lignin and five flavonoids were isolated from BHE. The antinociceptive activity of BHE was most likely due to the presence of the flavonoids. The acute toxicity results showed that BHE was safe at a high dose (2 g/kg, p.o.. The current investigation demonstrates that B. glauca subsp. hupehana is a potential candidate for the development of novel, non-opioid, analgesic phytomedicines.

  12. Chemical composition and anxiolytic-like effects of the Bauhinia platypetala

    Directory of Open Access Journals (Sweden)

    Francisco José Borges dos Santos

    2012-06-01

    Full Text Available The pantropical genus Bauhinia, Fabaceae, known popularly as cow's foot, is widely used in folk medicine as antidiabetic. Behavioral effects of the ethanolic extract and ethereal, aqueous and ethyl acetate fractions from B. platypetala Benth. ex Hemsl. leaves were studied in male Swiss mice. The ethanolic extract and fractions were administered intraperitoneally and its effects on spontaneous motor activity (total motility, locomotion, rearing and grooming behavior were monitored. Anxiolytic-like properties were studied in the elevated plus-maze test and the possible antidepressant-like actions were evaluated in the forced swimming test. The results revealed that only the highest dose of the ethereal fraction (50 mg/kg, i.p. caused a significant decrease in total motility, locomotion and rearing. Sole dose injected (50 mg/kg of ethanolic extract and ethereal fractions increased the exploration of the elevated plus-maze open arms in a similar way to that of diazepam (2 mg/kg, i.p.. In the forced swimming test, the ethanolic extract and their fractions (12.5, 25 or 50 mg/kg was not as effective as paroxetine (10 or 20 mg/kg, i.p. and imipramine (25 or 50 mg/kg, i.p. in reducing immobility. These results suggest that some of the components of the ethanolic extract and of the ethereal fraction from B. platypetala, such as p-cymene, phytol, D-lactic acid, hexadecanoic acid, among others, may have anxiolytic-like properties, which deserve further investigation. Furthermore, the results obtained indicate that ethanolic extract from B. platypetala and their fractions do not present antidepressive properties. However, these properties cannot be related to the chemical constituents identified in this specie.

  13. Effect of the Lectin of Bauhinia variegata and Its Recombinant Isoform on Surgically Induced Skin Wounds in a Murine Model

    Directory of Open Access Journals (Sweden)

    Rodrigo Bainy Leal

    2011-11-01

    Full Text Available Lectins are a structurally heterogeneous group of highly specific carbohydrate-binding proteins. Due to their great biotechnological potential, lectins are widely used in biomedical research. The purpose of the present study was to evaluate the healing potential of the lectin of Bauhinia variegata (nBVL and its recombinant isoform (rBVL-1. Following surgical creation of dorsal skin wounds, seven groups of mice were submitted to topical treatment for 12 days with lectin, D-galactose, BSA and saline. The animals were anesthetized and euthanized on POD 2, 7 and 12 in order to evaluate the healing potential of each treatment. The parameters considered included wound size, contraction rate, epithelialization rate and histopathological findings. Wound closure was fastest in animals treated with rBVL-1 (POD 7. nBVL was more effective than the controls. All skin layers were reconstructed and keratin deposition increased. Our findings indicate that the lectin of Bauhinia variegata possesses pro-healing properties and may be employed in the treatment of acute skin wounds.

  14. Effect of the lectin of Bauhinia variegata and its recombinant isoform on surgically induced skin wounds in a murine model.

    Science.gov (United States)

    Neto, Luiz Gonzaga do Nascimento; Pinto, Luciano da Silva; Bastos, Rafaela Mesquita; Evaristo, Francisco Flávio Vasconcelos; Vasconcelos, Mayron Alves de; Carneiro, Victor Alves; Arruda, Francisco Vassiliepe Sousa; Porto, Ana Lúcia Figueiredo; Leal, Rodrigo Bainy; Júnior, Valdemiro Amaro da Silva; Cavada, Benildo Sousa; Teixeira, Edson Holanda

    2011-11-07

    Lectins are a structurally heterogeneous group of highly specific carbohydrate-binding proteins. Due to their great biotechnological potential, lectins are widely used in biomedical research. The purpose of the present study was to evaluate the healing potential of the lectin of Bauhinia variegata (nBVL) and its recombinant isoform (rBVL-1). Following surgical creation of dorsal skin wounds, seven groups of mice were submitted to topical treatment for 12 days with lectin, D-galactose, BSA and saline. The animals were anesthetized and euthanized on POD 2, 7 and 12 in order to evaluate the healing potential of each treatment. The parameters considered included wound size, contraction rate, epithelialization rate and histopathological findings. Wound closure was fastest in animals treated with rBVL-1 (POD 7). nBVL was more effective than the controls. All skin layers were reconstructed and keratin deposition increased. Our findings indicate that the lectin of Bauhinia variegata possesses pro-healing properties and may be employed in the treatment of acute skin wounds.

  15. Lectin I from Bauhinia variegata (BVL-I) expressed by Pichia pastoris inhibits initial adhesion of oral bacteria in vitro.

    Science.gov (United States)

    Klafke, Gabriel Baracy; Moreira, Gustavo Marçal Schmidt Garcia; Pereira, Juliano Lacava; Oliveira, Patrícia Diaz; Conceição, Fabricio Rochedo; Lund, Rafael Guerra; Grassmann, André Alex; Dellagostin, Odir Antonio; da Silva Pinto, Luciano

    2016-12-01

    Lectins are non-immune proteins that reversibly bind to carbohydrates in a specific manner. Bauhinia variegata lectin I (BVL-I) is a Gal/GalNAc-specific, single-chain lectin isolated from Bauhinia variegata seeds that has been implicated in the inhibition of bacterial adhesion and the healing of damaged skin. Since the source of the native protein (nBVL) is limited, this study aimed to produce recombinant BVL-I in Pichia pastoris (rBVL-Ip). The coding sequence for BVL-I containing preferential codons for P. pastoris was cloned into the pPICZαB plasmid. A single expressing clone was selected and fermented, resulting in the secretion and glycosylation of the protein. Fed-batch fermentation in 7L-scale was performed, and the recombinant lectin was purified from culture supernatant, resulting in a yield of 1.5mg/L culture. Further, rBVL-Ip was compared to nBVL and its recombinant version expressed in Escherichia coli BL21 (DE3) (rBVL-Ie). Although it was expressed as a monomer, rBVL-Ip retained its biological activity since it was able to impair the initial adhesion of Streptococcus mutans and S. sanguinis in an in vitro model of biofilm formation and bacterial adhesion. In summary, rBVL-Ip produced in Pichia pastoris represents a viable alternative to large-scale production, encouraging further biological application studies with this lectin.

  16. Determination of Radical Scavenging Activity of Hydroalcoholic and Aqueous Extracts from Bauhinia divaricata and Bougainvillea spectabilis Using the DPPH Assay

    Directory of Open Access Journals (Sweden)

    L Chaires-Martinez

    2009-01-01

    Full Text Available Bauhinia divaricata and Bougainvillea spectabilis are medicinal plants widely distributed in Mexico and they are used because of its potential hypoglycemic action; however, no free radical scavenging activity (RSA studies over these plants are known. Thus, aqueous and hydroalcoholic extracts from leaf and stem samples were evaluated for their RSA using 1,1-diphenylpicrylhydrazyl free radical (DPPH·. Total phenolics and flavonoids extracts were determined too. Statistical analyses were performed using the SPSS statistical program with the significance level set at P< 0.05. Bauhinia divaricata stem aqueous extracts with total phenols content of 12.98 mg GAE/g DW had the highest amount between samples. The same behavior was shown in flavonoids determination. However, when RSA was estimated it was found that stem aqueous extracts from Bougainvillea spectabilis produced more DPPH absorbance reduction (95.66%, with an IC 50 (the concentration to inhibit the oxidation of DPPH by 50% and AP (reciprocal of IC 50 values of 0.03 μg/mL and 33.33, respectively. These results were superior to common synthetic antioxidants used in the food industry like butylated hydroxyl toluene (BHT, IC 50=62 μg/mL and can be useful for further applications of these plants or its constituents in pharmaceutical and alimentary preparations.

  17. Perfil de flavonoides e avaliação do potencial antioxidante e citotóxico de Bauhinia purpurea (Fabaceae da região amazônica

    Directory of Open Access Journals (Sweden)

    Priscila Moraes dos Santos

    2014-01-01

    Full Text Available Bauhinia purpurea (Fabaceae. Plants of the Bauhinia species (Fabaceae are used in the treatment of several infections and diseases, especially diabetes. In this paper, with an aim to contribute to the knowledge of the chemistry and therapeutic potential of the Amazonian species of the genus Bauhinia, flavonoid profiles in the leaves and branches of Bauhinia purpurea collected in Manaus and São Gabriel da Cachoeira/AM were analyzed by HPLC-DAD and ESIMS. Differences in the flavonoid profiles were detected along with the presence of rutin and isoquercitrin in the leaves collected in Manaus. All samples showed antioxidant activity, however, no cytotoxic activity against cell lines MDA-MB435 (breast, HCT-8 (colon, and SF-295 (glioblastoma could be detected.

  18. El género Bauhinia (Fabaceae, Caesalpinioideae, Cercideae) en la península de Yucatán (México, Belice y Guatemala) The genus Bauhinia (Fabaceae, Caesalpinioideae, Cercideae) in Yucatán Peninsula (Mexico, Belice and Guatemala)

    OpenAIRE

    Rafael Torres-Colín; Rodrigo Duno de Stefano; Lilia Lorena Can

    2009-01-01

    Se presenta información del género Bauhinia, tribu Cercideae en la provincia biótica de la península de Yucatán. Se reconocen 5 especies nativas: Bauhinia divaricata L., B. erythrocalyx Wunderlin, B. jenningsii P. Wilson, B. herrerae (Britton et Rose) Standl. et Steyerm. y B. ungulata L., así como 2 introducidas: B. monandra Kurz y B. variegata L. Se presenta una clave para identificación, descripciones morfológicas, mapas de distribución, fotografías de las especies e información de los nomb...

  19. Evaluation of antinociceptive and anti-inflammatory activities of a new triterpene saponin from Bauhinia variegata leaves.

    Science.gov (United States)

    Mohamed, Mona A; Mammoud, Madeha R; Hayen, Heiko

    2009-01-01

    A new triterpene saponin, named as 23-hydroxy-3alpha-[O-alpha-L-1C4-rhamnopyranosyl-(1"-->4')-O-alpha-L-4C1-arabinopyranosyl-oxy]olean-12-en-28-oic acid O-alpha-L-1C4-rhamnopyranosyl-(1"'-->4")-O-beta-D-4C1-glucopyranosyl-(1"-->6"')-O-beta-D-4C1-glucopyranosyl ester (9), was isolated from the leaves of Bauhinia variegata Linn. In addition, six flavonoid compounds along with two cinnamic acid derivatives were isolated and identified based on their chromatographic properties, and chemical and spectral data (ESI-high resolution-MSn, 1H NMR, 13C NMR, 1H-1H COSY, HSQC, and HMBC). Compound 9 was found to be nontoxic (LD50) and to have significant anti-inflammatory and antinociceptive activities. It also showed a slight antischistosomal activity.

  20. Validação de metodologia espectrofotométrica para quantificação dos flavonóides de Bauhinia cheilantha (Bongard Steudel Validation of spectrophotometric methodology for quantify flavonoid content in Bauhinia cheilantha (Bongard Steudel

    Directory of Open Access Journals (Sweden)

    Tadeu José da Silva Peixoto Sobrinho

    2008-12-01

    Full Text Available Os laboratórios de fitoterápicos necessitam de metodologias que assegurem o controle de qualidade de seus produtos quando os mesmos não constam em farmacopéias ou monografias oficiais. Baseando-se neste fato, o presente estudo visou validar uma metodologia analítica para quantificação de flavonóides contidos nos extratos da pata-de-vaca (Bauhinia cheilantha [Bongard] Steudel, através de espectrofotometria no visível, como equivalentes de Rutina (µg/mL. Todos os parâmetros exigidos pela ANVISA foram avaliados. No teste de especificidade, observou-se a existência de pico máximo a 420 nm. O método foi considerado linear e com alta sensibilidade de quantificação (2,51 µg/mL. O método também mostrou-se robusto e com elevada recuperação (98,36%. Os resultados obtidos para repetibilidade (intra-corrida, precisão intermediária (inter-corridas e reprodutibilidade certificaram a precisão do método com valores entre 0,31 e 3,58%, sendo também considerado exato (95,71-105,50%. Com este estudo, o método proposto foi considerado específico, preciso, reprodutível, exato, de baixo custo e fácil execução.Phytotherapeutic laboratories require access to methodologies that guarantee quality control for their products when these items are not already registered in pharmacopeias or official monographs. As such, the present study sought to validate analytical methodologies for quantifying natural flavonoids contained in extracts of "pata-de-vaca" (Bauhinia cheilantha [Bong.] Steudel using visible light spectrophotometry and a rutin standard (µg/ml. All of the parameters required by ANVISA were evaluated. The specificity test revealed a maximum absorption peak at 420 nm. The methodology was considered linear and of high quantification sensitivity (2.51 µg/ml. The methodology also proved to be robust, and had high recovery levels (98.36%. The results obtained for repeatability, intermediate precision (intra- and inter-day, and

  1. Bauhinia bauhinioides cruzipain inhibitor reduces endothelial proliferation and induces an increase of the intracellular Ca2+ concentration.

    Science.gov (United States)

    Bilgin, Mehmet; Neuhof, Christiane; Doerr, Oliver; Benscheid, Utz; Andrade, Sheila S; Most, Astrid; Abdallah, Yaser; Parahuleva, Mariana; Guenduez, Dursun; Oliva, Maria L; Erdogan, Ali

    2010-12-01

    Proteinase inhibitors, isolated from different types of Bauhinia, have an effect on apoptosis, angiogenesis and inflammation. The Bauhinia bauhinioides cruzipain inhibitor (BbCI) is a Kunitz-type inhibitor and inactivates the cysteine proteinases cruzipain and cruzain from Trypanosoma cruzi. Cruzipain and tissue kallikrein have similar biochemical properties, e.g. the proteolytic cleavage of the kininogen precursor of lys-bradykinin. Tissue kallikrein stimulation in endothelial cells causes migration and capillary tube formation. The aim of this study was to examine whether the antiproliferative effect of BbCI is dependent on changes of the intracellular calcium concentration and membrane hyperpolarization. Endothelial cells were isolated from human umbilical cord veins (HUVEC). For proliferation experiments, HUVEC were incubated with BbCI (10-100 μmol/L) for 48 h. The proliferation was detected by cell counting with a Neubauer chamber. The effect of BbCI (10-100 μM) on the membrane potential was measured with the fluorescence dye DiBAC4(3) and the effect on [Ca+2]i with the fluorescence probe Fluo-3 AM. The change of the fluorescence intensity was determined with a GENios plate reader (Tecan). The experiments showed that BbCI (10-100 μmol/L) reduces the endothelial cell proliferation significantly in a concentration-dependent manner with a maximum effect at 100 μmol/L (35.1±1.8% as compared to control (p≤0.05; n=45)). As compared to the control, the addition of BbCI (100 μmol/L) caused a significant increase of systolic Ca2+ of 28.4±5.0% after 30 min incubation. HUVEC treatment with BbCI (100 μmol/L) showed a weak but significant decrease of the membrane potential of 9.5±0.9% as compared to control (p≤0.05; n=80). BbCI influenced significantly the endothelial proliferation, the intracellular Ca2+ concentration and the membrane potential.

  2. Antioxidant activity and physical-chemical properties of spray and spouted bed dried extracts of Bauhinia forficata

    Directory of Open Access Journals (Sweden)

    Claudia Regina Fernandes Souza

    2009-06-01

    Full Text Available Two distinct drying methods (spouted bed and spray drying were used for production of dried extracts of Bauhinia forficata Link (Leguminosae, Caesalpinoideae. High-quality powder products in terms of physical and chemical properties were obtained. HPLC fingerprints revealed that the chromatographic profiles of flavonoid compounds present in the dried extract did not change significantly, due to drying. In general, the spouted bed drying caused a degradation of total flavonoids than was lower than that of the spray drying. Antioxidant properties of the dried extract, examined by their radical scavenging activity using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH• and inhibition of lipid peroxidation induced by Fe+2 assays (LPO, confirmed their antioxidant potential. The slight reduction in scavenging activity of the dried extracts may be associated with the occurrence of oxidative reactions, decomposition or losses of thermolabile compounds, induced by the heat.Neste trabalho foram utilizados dois distintos secadores (leito de jorro e spray dryer para a produção de extratos secos de Bauhinia forficata Link (Leguminosae, Caesalpinoideae obtendo-se um produto seco com elevada qualidade em termos de suas propriedades físicas e químicas. Análises qualitativas obtidas por CLAE revelam que os perfis cromatográficos dos compostos flavonóides presentes nos extratos secos não apresentaram significativas mudanças durante a secagem quando comparados aos perfis obtidos para os extratos concentrados. Em geral, a secagem por leito de jorro acarreta menores perdas dos flavonóides totais do que a secagem em spray drying. A atividade antioxidante dos extratos secos foi examinada pelos métodos de (DPPH• e peroxidação lipídica induzida por Fe+2 (LPO. Uma pequena redução na atividade sequestradora de radicais livres observada para os extratos secos pode ser associada com a ocorrência de reações oxidativas, decomposição e/ou perdas de

  3. El género Bauhinia (Fabaceae, Caesalpinioideae, Cercideae en la península de Yucatán (México, Belice y Guatemala The genus Bauhinia (Fabaceae, Caesalpinioideae, Cercideae in Yucatán Peninsula (Mexico, Belice and Guatemala

    Directory of Open Access Journals (Sweden)

    Rafael Torres-Colín

    2009-08-01

    Full Text Available Se presenta información del género Bauhinia, tribu Cercideae en la provincia biótica de la península de Yucatán. Se reconocen 5 especies nativas: Bauhinia divaricata L., B. erythrocalyx Wunderlin, B. jenningsii P. Wilson, B. herrerae (Britton et Rose Standl. et Steyerm. y B. ungulata L., así como 2 introducidas: B. monandra Kurz y B. variegata L. Se presenta una clave para identificación, descripciones morfológicas, mapas de distribución, fotografías de las especies e información de los nombres comunes y uso en la región.General information about the genus Bauhinia in the Yucatán Peninsula Biotic Province is presented. Five native species, B. divaricata L, B. erythrocalyx Wunderlin, B. jenningsii P. Wilson, B. herrerae (Britton et Rose Standl. et Steyerm., B. ungulata L. and 2 exotic species, B. monandra Kurz and B. variegata L., are recognized. Species identification key, morphological descriptions, distribution maps, and photographs are presented. Additional information of common names and uses in the region is included.

  4. The Plant-Derived Bauhinia bauhinioides Kallikrein Proteinase Inhibitor (rBbKI) Attenuates Elastase-Induced Emphysema in Mice.

    Science.gov (United States)

    Martins-Olivera, Bruno Tadeu; Almeida-Reis, Rafael; Theodoro-Júnior, Osmar Aparecido; Oliva, Leandro Vilela; Neto Dos Santos Nunes, Natalia; Olivo, Clarice Rosa; Vilela de Brito, Marlon; Prado, Carla Máximo; Leick, Edna Aparecida; Martins, Mílton de Arruda; Oliva, Maria Luiza Vilela; Righetti, Renato Fraga; Tibério, Iolanda de Fátima Lopes Calvo

    2016-01-01

    Background. Elastase mediates important oxidative actions during the development of chronic obstructive pulmonary disease (COPD). However, few resources for the inhibition of elastase have been investigated. Our study evaluated the ability of the recombinant plant derived Bauhinia bauhinioides Kallikrein proteinase Inhibitor (rBbKI) to modulate elastase-induced pulmonary inflammation. Methods. C57Bl/6 mice were given intratracheal elastase (ELA group) or saline (SAL group) and were treated intraperitoneally with rBbKI (ELA-rBbKI and SAL-rBbKI groups). At day 28, the following analyses were performed: (I) lung mechanics, (II) exhaled nitric oxide (ENO), (III) bronchoalveolar lavage fluid (BALF), and (IV) lung immunohistochemical staining. Results. In addition to decreasing mechanical alterations and alveolar septum disruption, rBbKI reduced the number of cells in the BALF and decreased the cellular expression of TNF-α, MMP-9, MMP-12, TIMP-1, eNOS, and iNOS in airways and alveolar walls compared with the ELA group. rBbKI decreased the volume proportion of 8-iso-PGF2α, collagen, and elastic fibers in the airways and alveolar walls compared with the ELA group. A reduction in the number of MUC-5-positive cells in the airway walls was also observed. Conclusion. rBbKI reduced elastase-induced pulmonary inflammation and extracellular matrix remodeling. rBbKI may be a potential pharmacological tool for COPD treatment.

  5. Hepatoprotective Activity of Methanolic Extract of Bauhinia purpurea Leaves against Paracetamol-Induced Hepatic Damage in Rats

    Directory of Open Access Journals (Sweden)

    F. Yahya

    2013-01-01

    Full Text Available In an attempt to further establish the pharmacological properties of Bauhinia purpurea (Fabaceae, hepatoprotective potential of methanol extract of B. purpurea leaves (MEBP was investigated using the paracetamol- (PCM- induced liver toxicity in rats. Five groups of rats (n=6 were used and administered orally once daily with 10% DMSO (negative control, 200 mg/kg silymarin (positive control, or MEBP (50, 250, and 500 mg/kg for 7 days, followed by the hepatotoxicity induction using paracetamol (PCM. The blood samples and livers were collected and subjected to biochemical and microscopical analysis. The extract was also subjected to antioxidant study using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH radical scavenging assay with the total phenolic content (TPC also determined. From the histological observation, lymphocyte infiltration and marked necrosis were observed in PCM-treated groups (negative control, whereas maintenance of the normal hepatic structural was observed in group pretreated with silymarin and MEBP. Hepatotoxic rats pretreated with silymarin or MEBP exhibited significant decrease (P<0.05 in ALT and AST enzyme level. Moreover, the extract also exhibited antioxidant activity and contained high TPC. In conclusion, MEBP exerts potential hepatoprotective activity that could be partly attributed to its antioxidant activity and high phenolic content and thus warrants further investigation.

  6. The Kallikrein Inhibitor from Bauhinia bauhinioides (BbKI) shows antithrombotic properties in venous and arterial thrombosis models.

    Science.gov (United States)

    Brito, Marlon V; de Oliveira, Cleide; Salu, Bruno R; Andrade, Sonia A; Malloy, Paula M D; Sato, Ana C; Vicente, Cristina P; Sampaio, Misako U; Maffei, Francisco H A; Oliva, Maria Luiza V

    2014-05-01

    The Bauhinia bauhinioides Kallikrein Inhibitor (BbKI) is a Kunitz-type serine peptidase inhibitor of plant origin that has been shown to impair the viability of some tumor cells and to feature a potent inhibitory activity against human and rat plasma kallikrein (Kiapp 2.4 nmol/L and 5.2 nmol/L, respectively). This inhibitory activity is possibly responsible for an effect on hemostasis by prolonging activated partial thromboplastin time (aPTT). Because the association between cancer and thrombosis is well established, we evaluated the possible antithrombotic activity of this protein in venous and arterial thrombosis models. Vein thrombosis was studied in the vena cava ligature model in Wistar rats, and arterial thrombosis in the photochemical induced endothelium lesion model in the carotid artery of C57 black 6 mice. BbKI at a concentration of 2.0 mg/kg reduced the venous thrombus weight by 65% in treated rats in comparison to rats in the control group. The inhibitor prolonged the time for total artery occlusion in the carotid artery model mice indicating that this potent plasma kallikrein inhibitor prevented thrombosis.

  7. Novel synthesis of silver nanoparticles using Bauhinia variegata: a recent eco-friendly approach for mosquito control.

    Science.gov (United States)

    Govindarajan, Marimuthu; Rajeswary, Mohan; Veerakumar, Kaliyan; Muthukumaran, Udaiyan; Hoti, S L; Mehlhorn, Heinz; Barnard, Donald R; Benelli, Giovanni

    2016-02-01

    Mosquito vectors are responsible for transmitting diseases such as malaria, dengue, chikungunya, Japanese encephalitis, dengue, and lymphatic filariasis. The use of synthetic insecticides to control mosquito vectors has caused physiological resistance and adverse environmental effects, in addition to high operational cost. Biosynthesis of silver nanoparticles has been proposed as an alternative to traditional control tools. In the present study, green synthesis of silver nanoparticles (AgNPs) using aqueous leaf extract of Bauhinia variegata by reduction of Ag(+) ions from silver nitrate solution has been investigated. The bioreduced silver nanoparticles were characterized by UV–visible spectrophotometry, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDX), and X-ray diffraction analysis (XRD). Leaf extract and synthesized AgNPs were evaluated against the larvae of Anopheles subpictus, Aedes albopictus, and Culex tritaeniorhynchus. Compared to aqueous extract, synthesized AgNPs showed higher toxicity against An. subpictus, Ae. albopictus, and Cx. tritaeniorhynchus with LC50 and LC90 values of 41.96, 46.16, and 51.92 μg/mL and 82.93, 89.42, and 97.12 μg/mL, respectively. Overall, this study proves that B. variegata is a potential bioresource for stable, reproducible nanoparticle synthesis and may be proposed as an efficient mosquito control agent.

  8. Enzyme inhibition by molluscicidal agents of Bauhinia variegata and Mimusops elengi in the nervous tissue of Lymnaea acuminata

    Directory of Open Access Journals (Sweden)

    Kanchan Lata Singh

    2015-10-01

    Full Text Available Objective: To evaluate the effect of enzymatic activity in the nervous tissue of snail Lymnaea acuminata (L. acuminata by Bauhinia variegata (B. variegata and Mimusops elengi (M. elengi and their active molluscicidal components quercetin and saponin. Methods: Treatment of sublethal concentration (40% and 80% of 96-h LC50 in vivo of column-purified fraction of B. variegata leaf and M. elengi bark and their molluscicidal agents quercetin and saponin inhibit the acetylcholinesterase (AChE, acid and alkaline phosphatase (ACP and ALP activities in the nervous tissue of L. acuminata. Results: AChE activity was more inhibited than ACP and ALP in snail exposed to columnpurified fraction of M. elengi bark and saponin. Among all the treatments the highest inhibition in AChE activity (27.77% was noted in snail L. acuminata exposed to 80% of 96-h LC50 of saponin at 96-h exposure period. Conclusions: It can be concluded from the present study that inhibition of AChE, ACP and ALP by B. variegata leaf (quercetin and M. elengi bark (saponin in snail L. acuminata could be the cause of snail mortality.

  9. Synthesis of different-sized silver nanoparticles by simply varying reaction conditions with leaf extracts of Bauhinia variegata L.

    Science.gov (United States)

    Kumar, V; Yadav, S K

    2012-03-01

    Green synthesis of nanoparticles is one of the crucial requirements in today's climate change scenario all over the world. In view of this, leaf extract (LE) of Bauhinia variegata L. possessing strong antidiabetic and antibacterial properties has been used to synthesise silver nanoparticles (SNP) in a controlled manner. Various-sized SNP (20-120 nm) were synthesised by varying incubation temperature, silver nitrate and LE concentrations. The rate of SNP synthesis and their size increased with increase in AgNO(3) concentration up to 4 mM. With increase in LE concentration, size and aggregation of SNP was increased. The size and aggregation of SNP were also increased at temperatures above and below 40°C. This has suggested that size and dispersion of SNP can be controlled by varying reaction components and conditions. Polarity-based fractionation of B. variegata LE has suggested that only water-soluble fraction is responsible for SNP synthesis. Fourier transform infrared spectroscopy analysis revealed the attachment of polyphenolic and carbohydrate moieties to SNP. The synthesised SNPs were found stable in double distilled water, BSA and phosphate buffer (pH 7.4). On the contrary, incubation of SNP with NaCl induced aggregation. This suggests the safe use of SNP for various in vivo applications.

  10. Characterization of the molluscicidal activity of Bauhinia variegata and Mimusops elengi plant extracts against the fasciola vector Lymnaea acuminata.

    Science.gov (United States)

    Singh, Kanchan Lata; Singh, D K; Singh, Vinay Kumar

    2012-01-01

    The molluscicidal activity of Bauhinia variegata leaf and Mimusops elengi bark was studied against vector snail Lymnaea acuminata. The toxicity of both plants was time and concentration-dependent. Among organic extracts, ethanol extracts of both plants were more toxic. Toxicity of B. variegata leaf ethanolic extract (96h LC50- 14.4 mg/L) was more pronounced than M. elengi bark ethanolic extract (96h LC50-15.0 mg/L). The 24h LC50 of column purified fraction of B. variegata and M. elengi bark were 20.3 mg/L and 18.3 mg/L, respectively. Saponin and quercetin were characterized and identified as active molluscicidal component. Co-migration of saponin (Rf 0.48) and quercetin (Rf 0.52) with column purified bark of M. elengi and leaf of B. variegata on thin layer chromatography demonstrate same Rf value i.e. 0.48 and 0.52, respectively. The present study clearly indicates the possibility of using M. elengi and/or B. variegata as potent molluscicide.

  11. Characterization of the molluscicidal activity of Bauhinia variegata and Mimusops elengi plant extracts against the fasciola vector lymnaea acuminata

    Directory of Open Access Journals (Sweden)

    Kanchan Lata Singh

    2012-06-01

    Full Text Available The molluscicidal activity of Bauhinia variegata leaf and Mimusops elengi bark was studied against vector snail Lymnaea acuminata. The toxicity of both plants was time and concentration-dependent. Among organic extracts, ethanol extracts of both plants were more toxic. Toxicity of B. variegata leaf ethanolic extract (96h LC50- 14.4 mg/L was more pronounced than M. elengi bark ethanolic extract (96h LC50-15.0 mg/L. The 24h LC50 of column purified fraction of B. variegata and M. elengi bark were 20.3 mg/L and 18.3 mg/L, respectively. Saponin and quercetin were characterized and identified as active molluscicidal component. Co-migration of saponin (Rf 0.48 and quercetin (Rf 0.52 with column purified bark of M. elengi and leaf of B. variegata on thin layer chromatography demonstrate same Rf value i.e. 0.48 and 0.52, respectively. The present study clearly indicates the possibility of using M. elengi and/or B. variegata as potent molluscicide.

  12. Isolation and biochemical characterization of a galactoside binding lectin from Bauhinia variegata candida (BvcL) seeds.

    Science.gov (United States)

    Silva, José A; Damico, Daniela C S; Baldasso, Paulo A; Mattioli, Marcelo A; Winck, Flávia V; Fraceto, Leonardo F; Novello, José C; Marangoni, Sérgio

    2007-04-01

    A new lectin (BvcL) from seeds of a primitive Brazilian Caesalpinoideae, the Bauhinia variegata candida was purified and biochemical characterized. BvcL was isolated by gel filtration chromatography on Sephadex G75 and affinity chromatography on immobilized D: -lactose column. SDS-PAGE showed that BvcL under non-reducing condition presents two bands of 68 and 32 kDa and a single band of 32 kDa in reducing condition. However, only one band was seen in native PAGE. The hemagglutination activity of BvcL was not specific for any human blood group trypsin-treated erythrocytes. Carbohydrate inhibition analysis indicated that BvcL is inhibited by lactose, galactose, galactosamine and other galactoside derivates. Amino acid analysis revealed a large content of Ser, Gly, Thr, Asp and Glu and low concentrations of Met, Cys and His. Intrinsic fluorescence of BvcL was not significantly affected by sugar binding galactose; and aromatic-region CD is unusually high for plant lectins. The N-terminal amino acid sequence of 17 residues showed 90% sequential homology to galactose-specific legume lectins of the subfamily Caesalpinoideae.

  13. The Plant-Derived Bauhinia bauhinioides Kallikrein Proteinase Inhibitor (rBbKI Attenuates Elastase-Induced Emphysema in Mice

    Directory of Open Access Journals (Sweden)

    Bruno Tadeu Martins-Olivera

    2016-01-01

    Full Text Available Background. Elastase mediates important oxidative actions during the development of chronic obstructive pulmonary disease (COPD. However, few resources for the inhibition of elastase have been investigated. Our study evaluated the ability of the recombinant plant derived Bauhinia bauhinioides Kallikrein proteinase Inhibitor (rBbKI to modulate elastase-induced pulmonary inflammation. Methods. C57Bl/6 mice were given intratracheal elastase (ELA group or saline (SAL group and were treated intraperitoneally with rBbKI (ELA-rBbKI and SAL-rBbKI groups. At day 28, the following analyses were performed: (I lung mechanics, (II exhaled nitric oxide (ENO, (III bronchoalveolar lavage fluid (BALF, and (IV lung immunohistochemical staining. Results. In addition to decreasing mechanical alterations and alveolar septum disruption, rBbKI reduced the number of cells in the BALF and decreased the cellular expression of TNF-α, MMP-9, MMP-12, TIMP-1, eNOS, and iNOS in airways and alveolar walls compared with the ELA group. rBbKI decreased the volume proportion of 8-iso-PGF2α, collagen, and elastic fibers in the airways and alveolar walls compared with the ELA group. A reduction in the number of MUC-5-positive cells in the airway walls was also observed. Conclusion. rBbKI reduced elastase-induced pulmonary inflammation and extracellular matrix remodeling. rBbKI may be a potential pharmacological tool for COPD treatment.

  14. Diagnosis of dengue infection using a modified gold electrode with hybrid organic-inorganic nanocomposite and Bauhinia monandra lectin.

    Science.gov (United States)

    Andrade, Cesar A S; Oliveira, Maria D L; de Melo, Celso P; Coelho, Luana C B B; Correia, Maria T S; Nogueira, Maurício L; Singh, Pankaj R; Zeng, Xiangqun

    2011-10-15

    A sensitive and selective biosensor for dengue serotyping was successfully developed. The biosensor uses a novel gold nanoparticles-polyaniline hybrid composite (AuNpPANI) for the immobilization of Bauhinia monandra lectin (BmoLL). The nanocomposite was applied to a bare gold electrode surface by chemical adsorption, and BmoLL was subsequently electrostatically adsorbed to the nanocomposite-modified surface. Atomic force microscopy (AFM), cyclic voltammetry (CV) and electrochemical impedance (EI) techniques were applied to evaluate the immobilization of BmoLL on AuNpPANI. The AFM images for AuNpPANI-BmoLL-DEN systems indicate a homogenous, compact and dense film of the conjugate. In the EI analyses, an obvious difference of the electron transfer resistance between the AuNpPANI-modified electrode and the bare gold electrode was observed. Among three dengue serotypes studied, dengue serotype 2 (DEN2) has higher values for R(CT), and lower values for both n and Q. These are indications of a larger blocking effect and smaller capacitive dispersion, resulting from the higher agglutination of glycoproteins from the DEN2 sera. The selective BmoLL recognition for various dengue serotypes may be attributed to different patterns of glycoproteins in the sera produced by the glycoprotein immunoresponse from patients infected by the dengue virus.

  15. (4S-4,8-dihydroxy-1-tetralone and other chemical constituents from Pestalotiopsis sp. EJC07, endophytic fromBauhinia guianensis

    Directory of Open Access Journals (Sweden)

    Eleane M.C. de Souza

    2016-03-01

    Full Text Available The present work reports the isolation of eight compounds fromPestalotiopsis sp. EJC07 isolated as endophytic fromBauhinia guianensis, a tipical plant of the Amazon. The compounds (4S-4,8-dihydroxy-1-tetralone (1, uracil (2, uridin (3, p-hydroxybenzoic acid (4, ergosterol (5, ergosterol peroxide (6, cerevisterol (7 and ducitol (8 were isolated by chromatographic procedures and identified by spectral methods of 1D and 2D NMR and MS. The compound 1 is being reported for the first time in the genusPestalotiopsis.

  16. Ensayo del efecto diurético de los extractos acuosos de Amaranthus muricatus (Moquin) Gill. Ex Hicken, Bauhinia candicans Benth. y Smilax campestris Griseb.

    OpenAIRE

    2000-01-01

    Los extractos acuosos de Amaranthus muricatus (Amarantaceae), Smilax campestris (Liliaceae) y Bauhinia candicans (Leguminosae) fueron ensayados con relación a su actividad diurética en ratas. La evaluación farmacológica revela que la administración oral de los extractos de las especies citadas a dosis de 250,500 y 1000 mg/kg de peso no producen un aumento significativo en el volumen de orina excretado, por lo que el uso tradicional como diurético de las tres especies estudiadas no pudo ser de...

  17. Análise morfoanatômica comparativa da folha de Bauhinia forficata Link e B. variegata Linn. (Leguminosae, Caesalpinioideae Comparative morphogical and anatomycal analyses of Bauhinia forficata Link and B. variegata Linn. (Leguminosae, Caesalpinioideae leaves

    Directory of Open Access Journals (Sweden)

    Makeli Garibotti Lusa

    2009-03-01

    Full Text Available Esse trabalho foi desenvolvido com o propósito de subsidiar o controle de qualidade das espécies medicinais Bauhinia forficata Link e B. variegata Linn. Essas foram coletadas em jardins e terrenos baldios de Curitiba, Paraná, Brasil. As amostras do limbo, pecíolo e pulvino foram fixadas em F.A.A. 50 e conservadas em etanol 70%. O seccionamento do material foi feito em micrótomo de rotação (material incluído em historresina ou a mão livre e as lâminas foram montadas de forma permanente ou semipermanente. Foram realizadas análises em microscopia fotônica e eletrônica de varredura. A folha de B. forficata é alongada, com folíolos unidos em torno da metade do limbo, ápices agudos, superfície adaxial lisa e mucro entre os folíolos. Enquanto que, B. variegata possui folha mais larga que longa, com folíolos unidos na porção terminal do limbo e ápices obtusos. Nos pulvinos de B. variegata ocorrem camadas de colênquima, ausentes em B. forficata. O formato e a bainha de fibras dos pecíolos, em secção transversal, são distintos entre as espécies, assim como a distribuição dos estômatos e tricomas no limbo e a forma do bordo em secção transversal. B. variegata possui maior quantidade de idioblastos com drusas e compostos fenólicos. As características morfológicas e anatômicas de B. forficata e B. variegata contribuem para a identificação e diferenciação das espécies, sendo importantes para o controle de qualidade do material destinado à pesquisa e à indústria farmacêutica.This work has been developed with the purpose of helping the quality control of the medicinal species Bauhinia forficata Link and B. variegata Linn., which were collected in gardens and vacant lots in Curitiba, Paraná, Brazil. The samples of leaf blade, petiole and pulvinus were fixed in FAA 50 and preserved in alcohol 70. The sectioning of the material was made in rotational microtome (with the material included in historesine or manually and

  18. Distribution of the endophytic fungi community in leaves of Bauhinia brevipes (Fabaceae Distribuição da comunidade de fungos endofíticos em folhas de Bauhinia brevipes (Fabaceae

    Directory of Open Access Journals (Sweden)

    Mariana Patrícia Amorim Hilarino

    2011-12-01

    Full Text Available Endophytic fungi represent large, yet unexplored components of biodiversity. This work evaluated the richness and the distribution of endophytes in the leaves of Bauhinia brevipes (Fabaceae. A total of 1110 colonies were recovered from the samples and grouped by their morphological traits into 126 taxa. The total number of taxa according to leaf development was: 102 in mature leaves, 93 in recently expanded leaves and 79 for unfolded leaves. The major endophyte genera were Phomopsis, followed by Dothiorella, Pestalotiopsis and Acremonium. The richness and the isolate numbers of endophytes were not statistically affected by leaf region. However, some taxa were leaf-age specific; six were isolated only from unfolded leaves, nine from recently expanded leaves and 17 were exclusively found in mature leaves. The composition of endophytes varied with leaf region; the similarities (Jaccard's Index among the leaf regions of different leaf ages ranged from 0.36 to 0.46, indicating a high spatial variation in the community of endophytic fungi inside the leaves. The high richness of endophytes in this host plant highlights a significant contribution of fungi to tropical biodiversity and the need for further research in this area.Fungos endofíticos representam um grande e ainda pouco explorado componente da biodiversidade. O trabalho avaliou a riqueza e a distribuição endofítica nas folhas de Bauhinia brevipes (Fabaceae. Foram obtidas 1110 colônias que foram agrupadas, por suas características morfológicas em 126 táxons. O número total de táxons por estágio foliar foi: 102 em folhas maduras, 93 em folhas recém-expandidas e 79 em não expandidas. O principal gênero de endofítico encontrado foi Phomopsis, seguido por Dothiorella, Pestalotiopsis e Acremonium. A riqueza e o número de isolados não foram estatisticamente influenciadas pela região foliar. Contudo, alguns táxons foram específicas de um estágio foliar; seis foram isoladas apenas

  19. A NEW FLAVONE GLYCOSIDE, 5-HYDROXY 7,3',4',5'-TETRA-METHOXYFLAVONE 5-O-β-D-XYLOPYRANOSYL (1 → 2)-α-L-RHAMNOPYRANOSIDE FROM BAUHINIA VARIEGATA LINN

    Institute of Scientific and Technical Information of China (English)

    R. N. YADAVA; V. M. S. REDDY

    2001-01-01

    A new flavone glycoside m.f. C3oH36O15, m.p. 252-253℃, [M]+ 636 (EIMS) was isolated from the acetone soluble fraction of the concentrated 95% ethanolic extract of the seeds of Bauhinia xylopyranosyl-(1→2)-α-L-rhamnopyranoside (1) by various colour reactions, chemical degradations and spectral techniques.

  20. Bauhinia forficata prevents vacuous chewing movements induced by haloperidol in rats and has antioxidant potential in vitro.

    Science.gov (United States)

    Peroza, Luis Ricardo; Busanello, Alcindo; Leal, Caroline Queiroz; Röpke, Jivago; Boligon, Aline Augusti; Meinerz, Daiane; Libardoni, Milena; Athayde, Margareth Linde; Fachinetto, Roselei

    2013-04-01

    Classical antipsychotics can produce motor disturbances like tardive dyskinesia in humans and orofacial dyskinesia in rodents. These motor side effects have been associated with oxidative stress production in specific brain areas. Thus, some studies have proposed the use of natural compounds with antioxidant properties against involuntary movements induced by antipsychotics. Here, we examined the possible antioxidant activity of Bauhinia forficata (B. forficata), a plant used in folk medicine as a hypoglycemic, on brain lipid peroxidation induced by different pro-oxidants. B. forficata prevented the formation of lipid peroxidation induced by both pro-oxidants tested. However, it was effective against lipid peroxidation induced by sodium nitroprusside (IC50 = 12.08 μg/mL) and Fe(2+)/EDTA (IC50 = 41.19 μg/mL). Moreover, the effects of B. forficata were analyzed on an animal model of orofacial dyskinesia induced by long-term treatment with haloperidol, where rats received haloperidol each 28 days (38 mg/kg) and/or B. forficata decoction daily (2.5 g/L) for 16 weeks. Vacuous chewing movements (VCMs), locomotor and exploratory activities were evaluated. Haloperidol treatment induced VCMs, and co-treatment with B. forficata partially prevented this effect. Haloperidol reduced the locomotor and exploratory activities of animals in the open field test, which was not modified by B. forficata treatment. Our present data showed that B. forficata has antioxidant potential and partially protects against VCMs induced by haloperidol in rats. Taken together, our data suggest the protection by natural compounds against VCMs induced by haloperidol in rats.

  1. Mycorrhizal bioestimulation with essential oil on Enterolobium contorsiliquum and Bauhinia forficata seedlings in soil contaminated with copper

    Directory of Open Access Journals (Sweden)

    Rodrigo Ferreira da Silva

    2015-06-01

    Full Text Available The use of native tree species inoculated with ectomycorrhizal fungus can be an alternative for revegetation of soil contaminated with copper. The objective was to evaluate the interference of eucalyptus essential oil copper and ectomycorrhiza on growth and quality of seedlings timbaúva-preta (Enterolobium contorsiliquum and pata-de-vaca (Bauhinia forficata. The study was conducted in greenhouse for 120 days using as substrate the layer of 0-20 cm of a Red Oxisol with very clayey texture. The experimental design was completely randomized factorial (2 x 2 x 2, and “ with and without “ inoculant ectomycorrhizal essential oil and addition of 150 mg kg-1 of copper in the soil . Was evaluated the plant height, stem diameter, dry mass of shoots, roots and total length and specific surface area and root seedling quality of relations between: shoot height and stem diameter, shoot height and dry mass of shoots and the quality index of Dickson. The formation of ectomycorrhiza was identified by visualization of fungal structures and surface morphology internal and external morphology of the root system. Addition of copper reduced de stems diameter and dry mass of de aerial part of the pata-de-vaca seedlings regardless of the addition of inoculant and oil. There was no formation of ectomycorrhiza, even when applied in the essential oil of seedlings timbaúva-preta and pata-de-vaca. Growth of timbaúva-preta seedlings is stimulated by the addition of 150 mg kg – 1 of copper and has a higher rate of seedling quality in relation to pata-de-vaca.

  2. Efficacy evaluation of Bauhinia variegata L. stem bark powder as adjunct therapy in chronic Staphylococcus aureus mastitis in goat

    Directory of Open Access Journals (Sweden)

    Jeevan Ranjan Dash

    2014-01-01

    Full Text Available Objective: The objective was to study the effect of Bauhinia variegata L. stem bark powder as adjunct therapy in chronic Staphylococcus aureus mastitis in goat. Materials and Methods: Mastitis was induced by intracisternal inoculation of coagulase positive S. aureus (J638 at the concentration of 2000 colony forming units. Group I animals were treated with repeated dose of ceftriaxone at 20 mg/kg intravenously, and Group II animals were treated with once daily oral administration of B. variegata L. stem bark powder at 6 g/kg for 7 days followed by maintenance dose at 3 g/kg for next 7 days along with repeated dose of the antibiotic at 20 mg/kg intravenously at 4 days interval. Results: No significant improvement in the clinical condition of the udder was noticed in the group treated with repeated dose of ceftriaxone alone. However, in the group treated with B. variegata L. stem bark powder along with repeated dose of ceftriaxone, no S. aureus colony was seen at 96 h and onwards in milk samples with a marked decrease in somatic cell count and milk alkaline phosphatase activity and increased lactoperoxidase activity. Further, plasma and milk concentration of ceftriaxone/ceftizoxime was increased, which indicated antibacterial, bioenhancing and antiinflammatory properties of the bark powder. The Group II animals also exhibited marked reduction in polymorphonuclear cells and fibrous tissue indicating antifibrotic property of B. variegata L. Conclusion: B. variegata L. stem bark powder can be considered as an effective adjunct therapy to intravenous ceftriaxone in S. aureus chronic mastitis in goat.

  3. Synthetic peptides and fluorogenic substrates related to the reactive site sequence of Kunitz-type inhibitors isolated from Bauhinia: interaction with human plasma kallikrein.

    Science.gov (United States)

    Oliva, M L; Santomauro-Vaz, E M; Andrade, S A; Juliano, M A; Pott, V J; Sampaio, M U; Sampaio, C A

    2001-01-01

    We have previously described Kunitz-type serine proteinase inhibitors purified from Bauhinia seeds. Human plasma kallikrein shows different susceptibility to those inhibitors. In this communication, we describe the interaction of human plasma kallikrein with fluorogenic and non-fluorogenic peptides based on the Bauhinia inhibitors' reactive site. The hydrolysis of the substrate based on the B. variegata inhibitor reactive site sequence, Abz-VVISALPRSVFIQ-EDDnp (Km 1.42 microM, kcat 0.06 s(-1), and kcat/Km 4.23 x 10(4) M(-1) s(-1)), is more favorable than that of Abz-VMIAALPRTMFIQ-EDDnp, related to the B. ungulata sequence (Km 0.43 microM, kcat 0.00017 s(-1), and kcat/Km 3.9 x 10(2) M(-1) s(-1)). Human plasma kallikrein does not hydrolyze the substrates Abz-RPGLPVRFESPL-EDDnp and Abz-FESPLRINIIKE-EDDnp based on the B. bauhinioides inhibitor reactive site sequence, the most effective inhibitor of the enzyme. These peptides are competitive inhibitors with Ki values in the nM range. The synthetic peptide containing 19 amino acids based on the B. bauhinioides inhibitor reactive site (RPGLPVRFESPL) is poorly cleaved by kallikrein. The given substrates are highly specific for trypsin and chymotrypsin hydrolysis. Other serine proteinases such as factor Xa, factor XII, thrombin and plasmin do not hydrolyze B. bauhinioides inhibitor related substrates.

  4. Potencial fitotóxico com enfoque alelopático de Bauhinia ungulata L. sobre sementes e plântulas de alface e cebola

    Directory of Open Access Journals (Sweden)

    Cristiane Silva Paula

    2016-07-01

    Full Text Available O presente trabalho avaliou o efeito do extrato etanólico e diferentes frações das folhas de Bauhinia ungulata L. sobre a germinação, crescimento, respiração e conteúdo de clorofila de plântulas de Lactuca sativa (alface e Allium cepa (cebola. Sementes de alface e cebola foram mantidas em contato com solução das amostras e colocadas em câmara de germinação. Realizaram-se contagens diárias para avaliar a interferência sobre a germinação e crescimento, e verificou-se possíveis interferências sobre a respiração radicular e o conteúdo de clorofila total das folhas das plântulas. Não foi observada nenhuma interferência das amostras sobre a porcentagem de germinação e massa seca das duas espécies. Com relação ao IVG, houve um atraso da germinação das sementes de alface quando em contato com o EB. O crescimento radicular das duas espécies foi inibido principalmente pelas frações EB e FR, sem nenhuma interferência sobre o crescimento do hipocótilo da alface e estímulo do crescimento do coleóptilo da cebola. Redução nos teores de clorofila total da alface e aumento na cebola, assim como estímulo da respiração das raízes. Conclui-se que o extrato e as frações de Bauhinia ungulata L. apresentam compostos químicos com atividade fitotóxica sobre o desenvolvimento de plântulas de alface interferindo principalmente no crescimento radicular, teor de clorofila e respiração radicular das espécies avaliadas.Palavras-chave: Fabaceae. Germinação. Clorofila. Sementes. Pata de Vaca. ABSTRACTPhytotoxic potential with allelopathic focus of Bauhinia ungulata L. on seeds and seedlings of lettuce and onionThis study evaluated the effect of ethanol extract and different fractions of leaves of Bauhinia ungulata L. on germination, growth, respiration and chlorophyll content of seedlings of Lactuca sativa (lettuce and Allium cepa (onion. Seeds of lettuce and onions were put in contact with the sample solution and placed

  5. Optimización de una instalación móvil capaz de reproducir condiciones de altitud en la admisión y el escape de un MCIA

    OpenAIRE

    MONKERUD GARRETA, NICOLÁS KEVIN

    2016-01-01

    [ES] El contenido de este trabajo se basa en el análisis y optimización de una instalación móvil capaz de reproducir condiciones de altitud en la admisión y escape para un motor de combustión interna alternativo (MCIA). La instalación estudiada es un diseño propio del instituto CMT-Motores Térmicos. En ella, se aprovechan elementos de turbomaquinaria y válvulas para simular a la entrada y salida del motor estudiado diferentes condiciones de presión, temperatura y gasto másico. ...

  6. Vegetative propagation of bauhinia x blakeana, an ornamental sterile tree Propagação vegetativa de bauhinia x blakeana, uma arbórea ornamental estéril

    Directory of Open Access Journals (Sweden)

    Renata Bachin Mazzini

    2013-04-01

    Full Text Available Bauhinia x blakeana (B. purpurea x B. variegata is a natural hybrid that has been cultivated in gardens, streets and parks. Due to its sterility, it must be vegetatively propagated. The objective of this work was to evaluate the viability of cuttings and grafting on its propagation. Semi-woody cuttings were collected during four seasons and treated with 0; 1,000; 2,000; and 3,000 mg L-1 of IBA. The experimental design was entirely randomized and the treatments were arranged in a 4x4 factorial scheme (four collecting times x four IBA concentrations and five replications with 10 cuttings each, per collecting time and per IBA concentration. Characteristics of roots and shoots were evaluated after 90 days. The data means were compared by the Tukey test and submitted to the polynomial regression analysis. For the grafting experiment, B. variegata and B. variegata var. candida plants of six and 12 months were used as rootstocks and the splice graft and T-budding methods were tested. The experimental design was entirely randomized and the treatments were arranged in a 2x2x2 factorial scheme (two rootstock species x two grafting methods x two rootstock ages and four replications with five plants each, per rootstock species, per grafting method and per rootstock age. Characteristics of shoots were evaluated after 90 days and the data means were compared by the Tukey test. B. x blakeana can be propagated by semi-woody cuttings collected in spring, without IBA application, or in summer, with the application of 3,000 mg L-1 of IBA. The tested grafting methods were not effective.Bauhinia x blakeana (B. purpurea x B. variegata é um híbrido natural que tem sido cultivado em jardins, ruas e parques. Por ser estéril, é essencial que seja multiplicado vegetativamente. O objetivo deste trabalho foi verificar a viabilidade da estaquia e da enxertia na propagação desse híbrido. Estacas semilenhosas foram coletadas nas quatro estações do ano e tratadas com 0

  7. Shape identification about three kinds of Bauhinia Linn%3种羊蹄甲属乔木的形态辨识

    Institute of Scientific and Technical Information of China (English)

    黄伟锋; 黄雁婷; 李艺伟

    2013-01-01

    由于红花紫荆、羊蹄甲、宫粉紫荆这3种羊蹄甲属乔木在园林应用中非常广泛,也常常发生混淆,在此针对其叶、花、树皮、果实、种子等器官形态的不同加以辨别鉴定,为园林业界同行对其准确识别提供参考。%B. blakeana Dunn, B. purpruea Linn.and B. variegata L. are three kinds of tree of Bauhinia category. They are not only used widely in gardens, but also always confused. In order to offer the gardening workers the reference of exact shape identification, this paper discusses the difference of organs from the three kinds of tree, such as leaf, flower, bark, fruit, seed and so on.

  8. Enhancement of insulin release from the beta-cell line INS-1 by an ethanolic extract of Bauhinia variegata and its major constituent roseoside.

    Science.gov (United States)

    Frankish, Neil; de Sousa Menezes, Fábio; Mills, Clive; Sheridan, Helen

    2010-07-01

    Plants of the genus Bauhinia are used in several countries worldwide for the treatment of diabetes, and several related species have been shown to have hypoglycaemic effects in vivo in both normoglycaemic and alloxan- and streptozotocin-treated animal models. In this study, the insulin-secreting cell line INS-1 was used to examine the effects of the crude ethanolic extract of leaves of B. variegata L. var. Candida Voidt and its major metabolite (6 S,7 E,9 R)-9-hydroxymegastigma-4,7-dien-3-one-9- beta-glycopyraroside (roseoside) on insulinotropic activity. The crude extracts and the major metabolite were shown to increase insulin secretion in a dose-dependant manner.

  9. Spouted bed drying of Bauhinia forficata link extract: the effects of feed atomizer position and operating conditions on equipment performance and product properties

    Directory of Open Access Journals (Sweden)

    C. R. F. Souza

    2005-06-01

    Full Text Available In this paper the effects of feed atomizer position and operating conditions on equipment performance (accumulation rate, product recovery, elutriation and thermal efficiency and product properties (moisture content, size distribution, flavonoid degradation and flow properties during spouted bed drying of Bauhinia forficata Link extract are evaluated. The parameters studied were the position of the atomizer system (top spray or bottom spray, the inlet temperature of the spouting gas (80 and 150oC and the feed mass flow rate of concentrated extract relative to the evaporation capacity of the dryer, Ws/Wmax (15 to 100%. Higher accumulation rate values were obtained with the atomizer placed at the bottom of the bed. In this configuration, the accumulation rate increases with the increase in the Ws/Wmax ratio. The best drying performance was obtained for the top spray configuration.

  10. A new linoleiyl arabinopyranoside from the bark of Bauhinia racemosa Lam and a new flavonoidal glycoside from the leaves of Cordia dichotoma Linn.

    Science.gov (United States)

    Rahman, Md Azizur; Akhtar, Juber

    2016-10-01

    Phytochemical investigation is very valuable for the ethnomedicinally important plants Bauhinia racemosa Lam (BR) and Cordia dichotoma Linn (CD) used for the cure of variety of ailments. This study was thus designed for phytochemical investigation of BR bark and CD leaves. Phytoconstituents were isolated from the methanolic extracts of the plants by column chromatography using silica gel as stationary phase. The structures had been established on the basis of their physicochemical and spectral data, i.e. IR, (1)H NMR, (13)C NMR and MS. Elution of the columns with different solvents furnished six compounds (1-6) from the methanolic extract of BR bark and three compounds (7-9) from the methanolic extract of CD leaves which were structurally elucidated. The present phytochemical investigation reported several new compounds useful in increasing the existing knowledge of phytoconstituents from BR bark and CD leaves which is very valuable, as these drugs are used in the Indian traditional systems of medicine.

  11. Human plasma kallikrein and tissue kallikrein binding to a substrate based on the reactive site of a factor Xa inhibitor isolated from Bauhinia ungulata seeds.

    Science.gov (United States)

    Oliva, M L; Andrade, S A; Batista, I F; Sampaio, M U; Juliano, M; Fritz, H; Auerswald, E A; Sampaio, C A

    1999-12-01

    Kunitz type Bauhinia ungulata factor Xa inhibitor (BuXI) was purified from B. ungulata seeds. BuXI inactivates factor Xa and human plasma kallikrein (HuPK) with Ki values of 18.4 and 6.9 nM, respectively. However, Bauhinia variegata trypsin inhibitor (BvTI) which is 70% homologous to BuXI does not inhibit factor Xa and is less efficient on HuPK (Ki = 80 nM). The comparison between BuXI and BvTI reactive site structure indicates differences at Met59, Thr66 and Met67 residues. The hydrolysis rate of quenched fluorescence peptide substrates based on BuXI reactive site sequence, Abz-VMIAALPRTMFIQ-EDDnp (leading peptide), by HuPK and porcine pancreatic kallikrein (PoPK) is low, but hydrolysis is enhanced with Abz-VMIAALPRTMQ-EDDnp, derived from the leading peptide shortened by removing the dipeptide Phe-Ileu from the C-terminal portion, for HuPK (Km = 0.68 microM, k(cat)/Km = 1.3 x 10(6) M(-1) s(-1)), and the shorter substrate Abz-LPRTMQ-EDDnp is better for PoPK (Km = 0.66 microM, k(cat)/Km = 2.2 x 10(3) M(-1) s(-1)). The contribution of substrate methionine residues to HuPK and PoPK hydrolysis differs from that observed with factor Xa. The determined Km and k(cat) values suggest that the substrates interact with kallikreins the same as an enzyme and inhibitor interacts to form complexes.

  12. Kinetic characterization of factor Xa binding using a quenched fluorescent substrate based on the reactive site of factor Xa inhibitor from Bauhinia ungulata seeds.

    Science.gov (United States)

    Oliva, M L V; Andrade, S A; Juliano, M A; Sallai, R C; Torquato, R J; Sampaio, M U; Pott, V J; Sampaio, C A M

    2003-07-01

    The specific Kunitz Bauhinia ungulata factor Xa inhibitor (BuXI) and the Bauhinia variegata trypsin inhibitor (BvTI) blocked the activity of trypsin, chymotrypsin, plasmin, plasma kallikrein and factor XIIa, and factor Xa inhibition was achieved only by BuXI (K(i) 14 nM). BuXI and BvTI are highly homologous (70%). The major differences are the methionine residues at BuXI reactive site, which are involved in the inhibition, since the oxidized protein no longer inhibits factor Xa but maintains the trypsin inhibition. Quenched fluorescent substrates based on the reactive site sequence of the inhibitors were synthesized and the kinetic parameters of the hydrolysis were determined using factor Xa and trypsin. The catalytic efficiency k(cat)/K(m) 4.3 x 10(7) M(-1)sec(>-1) for Abz-VMIAALPRTMFIQ-EDDnp (lead peptide) hydrolysis by factor Xa was 10(4)-fold higher than that of Boc-Ile-Glu-Gly-Arg-AMC, widely used as factor Xa substrate. Lengthening of the substrate changed its susceptibility to factor Xa hydrolysis. Both methionine residues in the substrate influence the binding to factor Xa. Serine replacement of threonine (P(1)') decreases the catalytic efficiency by four orders of magnitude. Factor Xa did not hydrolyze the substrate containing the reactive site sequence of BvTI, that inhibits trypsin inhibitor but not factor Xa. Abz-VMIAALPRTMFIQ-EDDnp prolonged both the prothrombin time and the activated partial thromboplastin time, and the other modified substrates used in this experiment altered blood-clotting assays.

  13. 湖北羊蹄甲化学成分研究%Studies on the chemical constituents of Bauhinia glauca subsp.hupehana

    Institute of Scientific and Technical Information of China (English)

    白明安图; 任凤霞; 杨郁; 张杨; 屈爱桃; 赵毅民

    2012-01-01

    Objective To study the chemical constituents of Bauhinia glauca subsp. Hupehana(Craib) T.Chen. Methods The chemical constituents were isolated by column chromatography and the structures were elucidated by physico-chemical and spectral analysis. Results Five compounds were isolated and identified as 3,5,7,3' ,5'-pentahydroflavanone(l) ,eriodictyol(2) ,3-O-methylqueretin(3),luteolin(4) and fisetin(5). Conclusion Compounds 1,3 and 5 were isolated from this genus for the first time .compound 2 and 4 were obtained from this plant for the first time.%目的 研究湖北羊蹄甲[ Bauhinia glauca subsp.hupehana( Craib) T.Chen]的化学成分.方法 采用正向硅胶柱色谱、凝胶柱色谱、聚酰胺柱色谱等分离化学成分,通过理化性质和波谱数据分析鉴定化合物的结构.结果 分离鉴定了5个化合物,分别为3,5,7,3’,5’-五羟基二氢黄酮醇(1)、圣草酚(2)、3-O-甲基槲皮素(3)、木犀草素(4)和黄颜木素(5).结论 化合物2和4为湖北羊蹄甲植物中首次分离;化合物1、3和5是羊蹄甲属中首次分离.

  14. A new flavone glycoside, 5-hydroxy 7,3',4',5'-tetra-methoxyflavone 5-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-rhamnopyranoside from Bauhinia variegata Linn.

    Science.gov (United States)

    Yadava, R N; Reddy, V M

    2001-01-01

    A new flavone glycoside m.f. C(30)H(36)O(15) m.p. 252-253 degrees C, [M]+ 636 (EIMS) was isolated from the acetone soluble fraction of the concentrated 95% ethanolic extract of the seeds of Bauhinia variegata (Linn). It was identified as 5-hydroxy7,3',4',5'-tetra-methoxyflavone 5-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-rhamnopyranoside (1) by various colour reactions, chemical degradations and spectral techniques.

  15. Contenha-se, se for capaz

    Directory of Open Access Journals (Sweden)

    Mirna Feitoza Pereira

    2008-11-01

    Full Text Available Em O Instinto da Linguagem, Steven Pinker discorre sobre sua célebre tese: a linguagem não é a mais prodigiosa invenção cultural humana. Ela é uma peça da constituição biológica do cérebro. A linguagem é uma habilidade complexa e especializada, que se desenvolve espontaneamente na criança, sem qualquer esforço consciente ou instrução formal, que se manifesta sem que se perceba sua lógica subjacente, que é qualitativamente a mesma em todo indiví­duo, e que difere de capacidades mais gerais de processamento de informações ou de comportamento inteligente. Para Pinker, a concepção de linguagem como um tipo de instinto transmite a idéia de que as pessoas sabem falar mais ou menos da mesma maneira que as aranhas sabem tecer suas teias. Ele apóia suas idéias em Darwin e Chomsky. Palavras-chave linguagem, gramática universal, evolução Abstract In Language Instinct, Steven Pinker argues about his famous thesis: language is not the most prodigious human cultural invention. It is a distinct piece of the biological constitution of the brain. Language is a complex, specialized skill, which develops spontaneously in the child, without conscious effort or formal instruction. It reveals itself without awareness of its underlying logic, which is qualitatively the same in every individual, and which is distinct from more general abilities of information processing of intelligent behavior. According to Pinker, the conception of language as a kind of instinct conveys the idea that people know how to talk in more or less the same way as spiders know how to spin webs. His thesis is founded in Darwin and Chomsky-s theories. Keywords language, universal grammar, evolution

  16. 羊蹄甲属5个树种花粉生活力测定%Measurement on Pollen Viability of Five Species from Bauhinia

    Institute of Scientific and Technical Information of China (English)

    王裕霞; 梁梦琳; 魏丹; 唐洪辉

    2016-01-01

    采用 MTT 法和离体萌发法对红花羊蹄甲(Bauhinia blakeana)等5个羊蹄甲属树种花粉生活力进行测定,结果表明,红花羊蹄甲、黄花羊蹄甲(B. tomentosa)、宫粉羊蹄甲(B. variegata)、橙红羊蹄甲(B. galpinii)和羊蹄甲(B. purpurea)花粉 MTT 染色率分别为40.3%、79.8%、93.6%、95.7%、100%,羊蹄甲、宫粉羊蹄甲、橙红羊蹄甲花粉细胞生活力较其他两个树种要高;离体萌发试验测得以上5个树种的花粉萌发率差异很大,红花羊蹄甲、黄花羊蹄甲、宫粉羊蹄甲、橙红羊蹄甲和羊蹄甲花粉的最高萌发率分别为0、23.0%、92.1%、50.0%、80.3%,其中宫粉羊蹄甲花粉萌发率最高,羊蹄甲花粉次之,红花羊蹄甲花粉不萌发。以上5个树种中宫粉羊蹄甲及羊蹄甲的盛花期花粉可以作为人工授粉进行杂交育种较为理想的花粉来源。宫粉羊蹄甲花粉最适离体萌发培养基配方为蔗糖220 g/L+硼酸20 mg/L。%The pollen viability of the five species of Bauhinia was studied by MTT and invitro germination method. The result showed that the MTT staining rates of Bauhinia blakeana, B. tomentosa, B. variegata, B. galpinii and B. purpurea were 40.3%, 79.8%, 93.6%, 95.7% and 100%, respectively. The viability of pollen cell of B. purpurea, B. variegata and B. galpinii were higher than other two species. There were great differences in 5 tree species in the invitro germination test result, and the highest germination rate of B. blakeana, B. tomentosa, B. variegata, B. galpinii and B. purpurea were 0、23.0%、92.1%、50.0%、80.3%, respectively. The B. variegata pollen germination rate was the highest, followed by B. purpurea, and the pollen of B. blakeana was not germinated. In the five species, the flowering period pollen of B. variegata and B. galpinii can be an ideal pollen source for artificial breeding. The optimum medium for the invitro germination of B. variegata pollen was sucrose

  17. Characterization of rhizobia that nodulate Arachis pintoi by RAPD analysis Caracterização de rizóbios capazes de nodular Arachis pintoi via análise de "RAPD"

    Directory of Open Access Journals (Sweden)

    Patrícia Pereira Pinto

    2004-09-01

    Full Text Available The genetic relationships of 85 Arachis pintoi nodulating Rhizobium strains were determined using the random amplified polymorphic DNA (RAPD methods. The analysis included 75 strains isolated from Cerrado soils and 10 other ones of different origins. The results indicated that there is a high level of similarity between these strains and that geographic distribution may affect their phylogenetic relationship. In addition, the results allowed the selection of the most suitable primers for characterisation of these Rhizobium strains which will be useful for implementation of competitiveness studies in Cerrado soils.As relações genéticas de 85 estirpes de Rhizobium capazes de nodular Arachis pintoi foram determinadas usando o método de "RAPD" (Random Amplified Polymorphic DNA. As análises incluíram 75 estirpes isoladas de solos de Cerrado e 10 de diferentes origens. Os resultados indicaram que existe um alto grau de similaridade entre estas estirpes e que a distribuição geográfica pode afetar suas relações filogenéticas. Além disso, os resultados permitiram a seleção de "primers" mais adequados para a caracterização dessas estirpes de Rhizobium, os quais serão úteis para a implementação de estudos de competitividade nos solos de Cerrado.

  18. Análise da pluviosidade e do efeito de borda sobre os teores de flavonóides em Bauhinia cheilantha (Bong. Steud., Fabaceae Analysis of rainfall and edge-effects on flavonoid levels in Bauhinia cheilantha (Bong. Steud., Fabaceae

    Directory of Open Access Journals (Sweden)

    Tadeu J. da S. Peixoto Sobrinho

    2009-09-01

    Full Text Available Este estudo avaliou a influência do efeito de borda e da pluviosidade sobre a produção de flavonóides em indivíduos de Bauhinia cheilantha (Bong. Steud., Fabaceae, em uma área de caatinga no estado de Pernambuco, Nordeste do Brasil. Foi utilizada metodologia analítica por complexação com cloreto de alumínio para quantificar a concentração de flavonóides contidos nos extratos foliares de B. cheilantha, por meio de espectrofotometria no visível. De forma geral, o efeito de borda afeta a produção de flavonóides, entretanto, não foi possível correlacionar a produção de flavonóides e a pluviosidade, demonstrando que a espécie avaliada utiliza outra estratégia como resposta às pressões ambientais.The present study evaluated the influence of the edge-effect and rainfall on flavonoid content in individuals of Bauhinia cheilantha (Bong. Steud., Fabaceae, in an area of caatinga vegetation in Pernambuco State, northeastern Brazil. The analytical methodology used aluminum chloride binding to quantify flavonoid concentrations by visible light spectrophotometry in leaf extracts of B. cheilantha. In general, forest edges influenced flavonoid production, but it was not possible to relate production with rainfall levels. These results demonstrate that this species uses various strategies to respond to environmental variables.

  19. 洋紫荆的文化内涵及其园林应用价值%The Cultural Connotation and Landscape Application Value of Bauhinia variegata

    Institute of Scientific and Technical Information of China (English)

    刘连海; 唐昌亮; 文才臻; 李浩; 罗树凯

    2016-01-01

    洋紫荆(Bauhinia variegata)属豆科羊蹄甲属植物,为近几年在广州等华南地区被广泛应用于园林景观中的乡土树种,并成为有“花城”美誉的广州市重点发展的地域特色花文化品牌树种.为提高人们对洋紫荆植物的认识,体现其应用价值,文章查阅相关资料,对洋紫荆植物文化及园林应用进行了分析.洋紫荆作为广州特色观花树种,具有和谐包容、思乡情怀以及繁荣进取等寓意,其在文化、景观、生态和科普方面都有着重要价值.

  20. POPULATION STRUCTURE AND SPATIAL DISTRIBUTION OF Bauhinia cheilantha (Bong. Steud. IN TWO FRAGMENTS AT DIFFERENT REGENERATION STAGES IN THE CAATINGA, IN SERGIPE, BRAZIL

    Directory of Open Access Journals (Sweden)

    Ana Cecília da Cruz Silva

    2015-06-01

    Full Text Available ABSTRACTThis study aimed to analyze the vertical and diameter structure and the spatial distribution pattern of Bauhinia cheilantha in two Caatinga fragments in Sergipe, Brazil, at different regeneration stages. Thirty plots were demarcated in area I (Canindé de São Francisco and Poço Redondo, which has vegetation regeneration, and 25 plots in area II (Porto da Folha with preserved vegetation, both having 400 m2. All B. cheilanthaindividuals had their height and circumference (circumference at breast height > 6 cm measured. Possible differences in height and diameter at breast height were tested in the two populations by using Student’s T-test. The distribution pattern of species was calculated through Payandeh’s index. We sampled 154 B. cheilantha individuals, equivalent to 33.3% of the plots in area I and in 1,027 individuals in area II, totaling 100% frequency. Height and the diameter of the two populations were statistically different, where AI achieved all values lower than AII. The spatial distribution pattern of B. cheilantha found in both areas was aggregate, with values of 11.85 and 9.00, respectively. Thus, it became clear that the population in AII is at a more advanced successional status than AI, due to its longer conservation time.

  1. Influência da radiação por feixe de eletrões no perfil cromatográfico de Bauhinia variegata var candida: flor comestível proveniente do brasil

    OpenAIRE

    Heleno, Sandrina A.; Villavicencio, Anna L.C.H.; Barros, Lillian; Isabel C. F. R. Ferreira

    2016-01-01

    As flores de Bauhinia variegata var candida apresentam coloração branca e são vulgarmente conhecidas como “patas de vaca branca”, sendo muito utilizadas na cozinha gourmet como forma de aumentar a qualidade sensorial e nutricional dos alimentos [1,2]. No presente estudo, as flores foram submetidas a radiação por feixe de eletrões em diferentes doses (0,5 e 0,8 kGy) como forma de descontaminação, e seguidamente analisadas em termos de parâmetros nutricionais (humidade, proteí...

  2. Selection of filamentous fungi of the Beauveria genus able to metabolize quercetin like mammalian cells Seleção de fungos filamentosos do gênero Beauveria capazes de metabolizar quercetina de forma semelhante aos mamíferos

    Directory of Open Access Journals (Sweden)

    Eula Maria de M. B. Costa

    2008-06-01

    Full Text Available Microbial biotransformations constitute an important alternative as models for drug metabolism study in mammalians and have been used for the industrial synthesis of chemicals with pharmaceutical purposes. Several microorganisms with unique biotransformation ability have been found by intensive screening and put in commercial applications. Ten isolates of Beauveria sp genus filamentous fungi, isolated from soil in the central Brazil, and Beauveria bassiana ATCC 7159 were evaluated for their capability of quercetin biotransformation. Biotransformation processes were carried out for 24 up to 96 hours and monitored by mass spectrometry analyses of the culture broth. All strains were able to metabolize quercetin, forming mammalian metabolites. The results were different from those presented by other microorganisms previously utilized, attrackting attention because of the great diversity of reactions. Methylated, sulphated, monoglucuronidated, and glucuronidated conjugated metabolites were simultaneously detected.Biotransformações microbianas constituem uma alternativa importante como modelo para o estudo do metabolismo de medicamentos em mamíferos e são empregadas em processos sintéticos industriais com propósitos farmacêuticos. Diversos microrganismos com potencial para biotransformação têm sido encontrados através de screening intensivo e aplicados comercialmente. Dez cepas de fungos filamentosos do gênero Beauveria, isolados na região central do Brasil, e a cepa Beauveria bassiana ATCC 7159 foram avaliadas quanto à capacidade de biotransformação da quercetina. As reações de biotransformações foram realizadas por um período de 24 a 96 horas, e monitoradas através de espectrometria de massas do meio reacional. Todas as cepas foram capazes de metabolizar a quercetina, formando metabólitos encontrados nos mamíferos. Os resultados foram diferentes dos resultados apresentados por outros microrganismos utilizados anteriormente e

  3. Estar críticamente enfermo significa no ser capaz y no poder decidir Undergoing a critical sickness means not to be capable and not to be able to decide

    Directory of Open Access Journals (Sweden)

    Oscar Beltrán Salazar

    2008-06-01

    Full Text Available Objetivo: Describir el significado para los pacientes críticamente enfermos hospitalizados en UCI de la experiencia de ser dependientes de los enfermeros para la satisfacción de las necesidades. Metodología: Investigación con enfoque fenomenológico realizada en Medellín en 2006; incluyó a nueve personas adultas entre 24 y 80 años que estuvieron críticamente enfermos y hospitalizados en UCI. La entrevista en profundidad se utilizó para la recolección de información. Los datos se analizaron según el esquema propuesto por Cohen, Kahan y Steeves. Resultados: Depender de otras personas para actuar y para decidir, el sufrimiento y el dolor influyen en la dureza de la experiencia de padecer una enfermedad grave. Discusión: No ser capaz de autosatisfacer las necesidades propias y no poder tomar decisiones contribuyen para que la experiencia de padecer una enfermedad grave sea "dura y difícil". Conclusión: la dependencia de los pacientes que padecen una enfermedad grave no debe ser asumida por los enfermeros sino que debe evaluarse en cada caso, lo mismo que las respuestas a dicha dependencia para asegurar el respeto por los derechos de las personas enfermas.Objective: To describe the meaning for the critically sick patients hospitalized in ICU of the experience of being dependent of nurses for meting needs. Methodology: Phenomenological focused research carried out in Medellín in 2006; it included nine adults among 24 and 80 years who were critically sick and hospitalized in ICU. The interview in depth was used for gathering information. The data were analyzed according to the outline proposed by Cohen, Kahan and Steeves. Results: The dependency on other people to act and decide, the suffering and the pain influence in the hardness of the experience of suffering a serious illness. Discussion: Not to be capable of meeting the own necessities and making decisions make the experience of suffering a serious illness "hard and difficult

  4. Growth of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. cell suspension cultures with carbon sources Crescimento de cultura de células em suspensão de Bauhinia forficata Link, Curcuma zedoaria Roscoe e Phaseolus vulgaris L. em fontes de carbono

    Directory of Open Access Journals (Sweden)

    Marcia Ometto Mello

    2001-09-01

    Full Text Available Cell suspension cultures of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. were used to test plant ability to utilize an alternative to sucrose as carbon source and energy for growth. Glycerol, sorbitol and galactose were the alternative carbon sources tested. Cell suspension cultures established on liquid medium containing sucrose were transferred to culture medium supplemented with sucrose or glycerol, or sorbitol, or galactose as the sole carbon source. Fresh and dry weight increasing and protein content showed marked differences among the different carbon sources used. Sucrose was the best carbon source for all the three plant species tested. Galactose and glycerol promoted slow or no growth of the three studied species. Sucrose in liquid medium promoted initiation of meristemoid formation. Sorbitol, which was ineffective on promoting significant growth, was the only alternative carbon source tested that also promoted this effect.Culturas de células em suspensão de Bauhinia forficata Link, Curcuma zedoaria Roscoe e Phaseolus vulgaris L. foram usadas para avaliar a eficiência de fontes alternativas de carbono e energia. Glicerol, sorbitol e galactose foram as fontes alternativas estudadas. As culturas de células estabelecidas em meio líquido contendo sacarose foram transferidas para meios de cultura suplementados com sacarose ou glicerol ou sorbitol ou galactose. A fonte de carbono afetou distintamente os ganhos de matéria fresca, matéria seca e o acúmulo de proteína. A sacarose foi a melhor fonte de carbono para as três espécies estudadas. Galactose e glicerol promoveram pequeno crescimento das três espécies estudadas. A sacarose utilizada como fonte de carbono no meio líquido, promoveu o início de organização celular conhecido como a formação de meristemóides. Sorbitol, que não promoveu crescimento significativo, foi a única fonte alternativa de carbono testada que também promoveu este

  5. A altura uterina é capaz de diagnosticar os desvios do volume de líquido amniótico? Is uterine height able to diagnose amniotic fluid volume deviations?

    Directory of Open Access Journals (Sweden)

    Djacyr Magna Cabral Freire

    2013-02-01

    Full Text Available OBJETIVO: Avaliar o desempenho de uma curva de altura uterina (AU quanto à capacidade de rastrear desvios do volume de líquido amniótico, utilizando uma curva brasileira de índice de líquido amniótico (ILA como padrão-ouro. MÉTODOS: O presente estudo representa um corte transversal no qual foram incluídas 753 gestantes em acompanhamento pré-natal na rede pública de João Pessoa (PB no período de março a outubro de 2006 e que tiveram um exame de ultrassonografia (US de rotina agendado para depois da 26ª semana de idade gestacional. Foram excluídos os casos com diagnóstico de gestação gemelar, óbito fetal intrauterino e malformações fetais maiores. Além de informações sociodemográficas, foram coletados também os valores da AU medida de forma padronizada, os valores do peso fetal estimado, do ILA e a idade gestacional pelo exame de US. A capacidade da curva de AU em predizer os desvios do volume de líquido amniótico foi avaliada tendo uma curva brasileira de ILA em função da idade gestacional como padrão-ouro. Para isso, foram estimados a sensibilidade, especificidade e valores preditivos positivo e negativo para diferentes pontos de corte. RESULTADOS: A medida da AU identificou 10,5% das mulheres como AU baixa e possivelmente associada ao oligoâmnio, e 25,2% como AU alta e possivelmente associada ao polidrâmnio. Utilizando uma curva brasileira de referência para ILA, a AU foi capaz de predizer pobremente a ocorrência de oligoâmnio (sensibilidade variando entre 37 a 28% e de forma razoável a ocorrência de polidrâmnio (sensibilidade variando entre 88 a 69%. CONCLUSÃO: A medida da altura uterina mostrou um desempenho ruim para predizer oligoâmnio e um desempenho razoável para predizer polidrâmnio. Sua utilização para essa finalidade só se justifica, portanto, em situações nas quais o exame ultrassonográfico não esteja fácil e rotineiramente disponível, a fim de ajudar na priorização dos casos que

  6. 宫粉羊蹄甲种质资源的综合评价研究%Integrative Evaluation on the Germplasm Resources of Bauhinia variegata

    Institute of Scientific and Technical Information of China (English)

    魏丹; 唐洪辉; 赵庆; 胡柔璇

    2016-01-01

    In recent years, Bauhinia variegate, as an ornamental flower of native trees, has been widely used in the construction of gardens because of its excellent flowering performance, and has broad development prospects. The study focused on the field survey of about 1 000 plants in 11 landscape nodes of Guangzhou, and 60 excellent plants were selected as the base materials by using AHP (analytic hierarchy process). The plant shape, growth potential, crown density, flowering stage, flower color, quality in full-bloom stage, flower shape and flower diameter were evaluated. The results of cluster analysis showed that the first and the second class plants in the forest were as follows: LJC05, LJC01, HLS08, HLS09, HLS05, HLS03, YST01, YST03, HN04, CL01, LKY01, LJC06, LHH06, LHH08, LJC03, LJC02, HLS07, YST02, HLS04, LJC04, LHH07, LHH03, LHH02, LHH04, HN05 and LHH01. The better comprehensive performance of varieties of the above, the varieties selected for cultivation and promotion of B. variegata varieties provide the parent. The superior plants were selected through the further classification, which were LJC05, LJC01, HLS08, HLS09, HLS05, HLS03, YST01 and YST03. The comprehensive evaluation value of these plants is high, and the selected plants can provide the stock plant for the popularization of new the breed of B. variegata.%宫粉羊蹄甲(Bauhinia variegata)作为华南地区主要的观花乡土乔木,开花表现优异,受到市民们的广泛喜爱,被大量地应用在园林建设中,具有广阔的开发前景。该研究针对广州地市5个行政区域11个景观节点约1000株宫粉羊蹄甲进行实地调查,筛选出60株宫粉羊蹄甲优良植株作为基础材料,运用层次分析法进行优中选优。对其株形、生长势、树冠浓密度、花期、花色、盛花期花量、花朵形态、花香、花朵直径进行综合评价,使用聚类分析得出Ⅰ、Ⅱ类的植株有林机场05、林机场01、火炉山08、火炉山09

  7. DISTRIBUTION OF LECTIN IN THE SEED AND YOUNG SEEDLING OF BAUHINIA VARIEGATA L.%洋紫荆幼苗凝集素含量分布的研究

    Institute of Scientific and Technical Information of China (English)

    彭建宗; 陈兆平

    2000-01-01

    @@ 豆科植物的种子富含蛋白质,是动物和人类食物蛋白的重要来源,但是豆科植物种子中凝集素的含量一般也较高,而凝集素被认为是植物防止动物食用的一种防御蛋白[1],因此对豆科植物凝集素的研究在生态学和营养学上都具有重要的意义.我们对洋紫荆(Bauhinia variegata L)的种子及幼苗各器官中凝集素的分布状况进行了初步的研究.

  8. 红花紫荆叶总黄酮提取工艺及其抑菌和抗氧化活性%Extraction, Antibiosis and Antioxidant Activity Analysis of Total Flavonoids from Bauhinia blakeana Dunn Leaves

    Institute of Scientific and Technical Information of China (English)

    黄素华; 林标声; 江龙

    2016-01-01

    研究了超声波提取红花紫荆(Bauhinia blakeana Dunn)叶黄酮的条件及其抗菌、抗氧化的性能.结果表明,经过正交试验分析,总黄酮最佳提取工艺为乙醇体积分数60%,超声时间45 min,超声温度70℃,料液比1:20(m:V),该条件下总黄酮提取率为4.11%.红花紫荆叶总黄酮对大肠杆菌、金黄色葡萄球菌、白色念珠菌均有抑菌效果,对金黄色葡萄球菌的抑菌效果最好,对青霉的抑菌效果不明显;红花紫荆叶总黄酮对金黄色葡萄球菌和大肠杆菌最小抑菌溶度为0.025 g/mL,对白色念珠菌最小抑菌浓度为0.05 g/mL,对青霉最小抑菌浓度为0.6 g/mL.红花紫荆叶总黄酮对羟自由基、超氧阴离子自由基、亚硝酸盐均具有一定的清除作用,在浓度0.5~2.5 mg/mL的范围内,清除能力随着浓度的增加而增强,且强于阳性对照维生素C的清除能力,抗氧化能力较强.%The conditions of ultrasonic extraction of Bauhinia blakeana Dunn leaf flavonoids and its antibiosis and antioxidant capabilities were studied. The results showed that the optimum extraction process of total flavonoids was ethanol concentration 60%,ultrasonic time of 45 min,ultrasonic temperature 70℃and solvent ratio 1:20(m:V ) by orthogonal experiment,under opti-mal conditions the extraction rate of 4.11%. The total flavonoids of Bauhinia blakeana Dunn leaf had antibacterial effect a-gainst E. coli,Staphylococcus aureus,Candida albicans,and its antibacterial effect of Staphylococcus aureus was best,the effect of Penicillium was not obvious. The minimum inhibitory concentrations for S. aureus,E. coli was 0.025 g/mL,the minimum in-hibitory concentration for C.albicans and Penicillium were 0.05 g/mL and 0.6 g/mL. The total flavonoids from Bauhinia blakeana Dunn leaves had certain scavenging ability on hydroxyl free radicals,superoxide anion free radicals and nitrite,and at the range of 0.5~2.5 mg/mL,the concentration increase,the scavenging capacity enhance

  9. Composição químico-bromatológica do feno de cipó-de-escada (Bauhinia glabra Jacq. em cinco estádios de corte Chemical composition of the hay of the Bauhinia glabra Jacq. in five periods of cut

    Directory of Open Access Journals (Sweden)

    Jael Soares Batista

    1999-01-01

    Full Text Available Esta pesquisa foi realizada para avaliar a composição químico-bromatológica do feno de cipó-de-escada (Bauhinia glabra Jacq. aos 42, 56, 70, 84 e 98 dias de crescimento, após o corte de uniformização. Delineamento experimental inteiramente casualizado com cinco tratamentos e quatro repetições foi usado. O feno foi obtido em uma área de pastagem nativa rebaixada/raleada de 7200 m², subdividida em parcelas de 360 m². Não houve diferenças para os teores de matéria seca (MS, matéria orgânica (MO, proteína bruta (PB, hemicelulose e fósforo (P. Os teores de fibra em detergente neutro (FDN, fibra em detergente ácido (FDA, celulose, lignina e cálcio (Ca apresentaram diferenças entre os tratamentos. Os teores médios para a composição químico-bromatológica foram: 88,90% MS, 94,17% MO, 5,51% MM, 17,97% PB, 58,12% FDN, 40,88% FDA, 17,11% hemicelulose, 27,33% celulose, 12,77% lignina, 0,29% Ca e 0,15% P. Os fenos avaliados são recomendáveis para suplementação protéica em dietas para ruminantes. Com o avançar do estádio vegetativo, aumentaram linearmente os constituintes da parede celular e o Ca.This research was carried out to evaluate the chemical composition of cipó-de-escada (Bauhinia glabra Jacq hay at 42, 56, 70, 84 and 98 days of growth after uniformity cut. A completely randomized experimental design, with five treatments and four replicates, was used. The hay was obtained from an area of native pasture lowed and cleaned of 7200 m², which were subdivided in plots of 360 m². There were no differences for the content of dry matter (DM, organic matter (OM, crude protein (CP, hemicellulose and phosphorus (P. However, differences were observed for the neutral detergent fiber (NDF, acid detergent fiber (ADF, cellulose, lignin and calcium (Ca contents among the treatments. The average contents for the chemical composition were: 88.90% DM, 94.17% OM, 5.51% ash, 17.97% CP, 58.12% NDF, 40.88% ADF, 17.11% hemicellulose, 27

  10. Influence of Cultivated Substrate Mixed with Garden Waste on Growth ofBauhinia variegata L.%园林废弃物堆肥对宫粉紫荆袋苗生长的影响

    Institute of Scientific and Technical Information of China (English)

    刘聪; 叶少萍; 陈莹; 张俊涛

    2012-01-01

    选用黄泥、黄泥:泥炭=5:2、黄泥:园林废弃物堆肥产品=5:2、黄泥:园林废弃物堆肥产品:泥炭=5:1:1等4种基质,研究其对宫粉紫荆袋苗生长的影响。综合分析植株株高、叶片叶绿素含量及叶片氮含量3个指标,结果表明:以黄泥:园林废弃物堆肥产品:泥炭=5:1:1配制的基质对宫粉紫荆生长有最好的效果,其次是以黄泥:园林废弃物堆肥产品=5:2配制的基质,说明园林废弃物堆肥产品是园林苗木基质的优良组成材料。%The growth effect of Bauhinia variegata L planted in the four cultivated substrates, yellow mud, yellow mud: peat=5:2,yellow mud: garden waste composting=5:2 and yellow mud: garden waste composting: peat=5:1:1, are examines in this study. The results of the plant height, the chlorophyll and nitrogen contents of the leaves shows the cultivated substrate of yellow mud :garden waste composting: peat=5:1:1 is the best for the growth of Bauhinia variegata L., the second is the cultivated substrate of yellow mud: garden waste composting=5:2. These results indicates that garden waste composting is a good constituent material for cultivated substrate.

  11. Níveis glicêmicos e de colesterol em ratos com Diabetes Mellitus aloxano induzido, tratados com infusão de Bauhinia candicans ou Syzygium Jambolanum Glucose and cholesterol plasma levels in rats with alloxan-induced Diabetes Mellitus treated with infusion of Bauhinia candicans or Syzygium Jambolanum

    Directory of Open Access Journals (Sweden)

    Julio Cesar Mendes Soares

    2000-03-01

    Full Text Available Este estudo verificou a eficiência de infusão de duas plantas usadas na medicina popular, Syzygium jambolanum (Sj e Bauhinia candicans (Bc. Sessenta (60 ratos adultos, machos, da linhagem Wistar, pesando entre 220 e 240g, foram submetidos à indução de Diabetes mellitus insulino dependente (DMID com Aloxano. O estudo foi dividido em dois experimentos. No primeiro, 15 ratos receberam a administração de Aloxano na dosagem de 40mg/kg em dose única e no segundo, 60mg/kg uma vez ao dia, durante três dias, ambos por via intraperitonial. A hiperglicemia foi confirmada no terceiro dia de cada experimento. Após esta confirmação, os animais foram divididos aleatoriamente em três grupos de cinco e quinze animais para o primeiro e segundo experimento, respectivamente. O grupo 1 (C serviu como controle, o grupo 2 (TI recebeu infusão de Sj "ad libitum" como fonte líquida e o grupo 3 (TII recebeu infusão de Bc, por um período de 21 e 40 dias, para o primeiro e segundo experimento, respectivamente. A colheita de sangue foi realizada por punção do plexo venoso retro-orbitário com os animais anestesiados, nos dias 3, 9, 16 e 23 do primeiro experimento e nos dias 3, 16, 24 e 40 do segundo. Após vinte e um dias da fase de tratamento, o grupo TI do primeiro experimento apresentou marcante redução de hiperglicemia (P The present study verified the efficiency of two plants used in folk medicine for the reduction of hyperglycemia in diabetic people. Sixty adult male wistar rats, with body weights ranging from 220 to 240g were treated with Alloxan to induce insulin-dependent Diabetes mellitus (IDDM. Two experiments were performed. In the first, 15 rats were treated with a single dose of alloxan (40mg/kg, i.p.; while in the second experiment animals received 60mg/kg, daily for three days. Three days after the last injection, hyperglycemia was confirmed. Positive animals were allocated into 3 groups of 5 and 15 rats for experiments I and II

  12. Ensino/aprendizagem de espanhol em Porto Seguro/BA: investigação acerca das significações docentes sobre o papel da epistemologia do educar em língua estrangeira para a formação do sujeito capaz de cruzar fronteiras culturais

    OpenAIRE

    Elissandro dos Santos Santana

    2012-01-01

    Este trabalho é fruto de uma pesquisa realizada nos meses de agosto e setembro de 2011 em três escolas de Porto Seguro em torno do seguinte tema: ensino/aprendizagem de espanhol em Porto Seguro/BA: investigação acerca das significações docentes sobre o papel da epistemologia do educar em língua estrangeira para a formação do sujeito capaz de cruzar fronteiras culturais. Na pesquisa de campo, fora aplicado um questionário semi-estruturado a quatro professores de língua espanhola, grupo amostra...

  13. Avaliação da qualidade de amostras comerciais de boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. e ginco (Ginkgo biloba L. Control quality evaluation of commercial samples of boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L.

    Directory of Open Access Journals (Sweden)

    J. G. de Melo

    2004-01-01

    Full Text Available O presente trabalho procurou avaliar a qualidade de produtos comercializados à base de boldo, pata-de-vaca e ginco, através dos parâmetros contidos na Farmacopéia Brasileira e na literatura específica. Foram analisadas oito amostras de boldo, nove de pata-de-vaca e sete de ginco, adquiridas em farmácias na cidade do Recife. A metodologia consistiu em avaliar: os rótulos e bulas dos produtos verificando se estavam de acordo com a RDC n o 17 de 24/02/2000 e a portaria 110/97 da ANVISA; realizar análise sensorial; verificar a autenticidade das amostras e sua pureza. Todas as embalagens de boldo, pata-de-vaca e seis de ginco continham erros ou ausência de informações científicas, além da falta de bula. Na verificação de impurezas, todas as de boldo, cinco de pata-de-vaca, e uma amostra de ginco foram reprovadas. Todos os produtos analisados apresentaram alguma irregularidade segundo os códigos oficiais, sendo necessário uma maior intensificação na vigilância de produtos à base de plantas medicinais no Brasil.This study aimed to evaluate the quality of commercial products prepared with boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L. by using parameters from the Brazilian Pharmacopoeia and specific literature. Eight samples of "boldo", nine of "pata-de-vaca", and seven of ginkgo were analyzed, all bought from pharmacies in Recife (Pernambuco, Brazil. The methodology consisted in evaluating the products’ labels and instructions to verify their accordance to RDC n o 17 of 02/24/2000 and ANVISA (National Sanitary Surveillance Agency decree 110/97, undertaking a sensorial analysis, and verifying the authenticity and purity of the samples. All of the packages of "boldo" and "pata-de-vaca" and six of the packages of ginkgo contained mistakes or lacked scientific information; instructions were also missing. After analyzing for impurities, all samples of "boldo", five of "pata-de-vaca", and one of

  14. Estudo do potencial fitotóxico de extratos de Bauhinia ungulata L. sobre a divisão celular e atividade enzimática em plântulas de alface

    Directory of Open Access Journals (Sweden)

    C. S. PAULA

    2015-12-01

    Full Text Available RESUMOEste trabalho visou avaliar a ação fitotóxica de extrato e frações obtidas das folhas de Bauhinia ungulata L sobre a divisão celular e atividade das enzimas α-amilase, catalase, peroxidase e polifenoloxidase em plântulas de alface (Lactuca sativa, var Grand rapis. Sementes de alface foram expostas às concentrações de 250, 500 e 1000 µg.mL-1 do extrato de Bauhinia ungulata e frações do mesmo, em condições ambientais controladas. Após três dias de protusão radicular, as raízes das plântulas foram cortadas e submetidas a preparo específico para visualização e contagem do número de células em cada fase mitótica. No sétimo dia, as amostras foram submetidas à avaliação da atividade enzimática utilizando técnica específica para cada enzima e leitura espectrofotométrica. Na análise da divisão celular observou-se que houve redução no número de células em mitose nas raízes das plântulas testadas, e a fração acetato de etila apresentou maior efeito inibitório sobre a divisão celular. O efeito sobre as enzimas que demonstram alterações no sistema de defesa antioxidante de L. sativa mostram que o extrato bruto e frações alteraram a produção das enzimas α- amilase, peroxidase, catalase e polifenol oxidase em, ao menos, uma das concentrações testadas, sendo um indicativo de estresse que interfere na divisão celular. Os resultados obtidos apontam para a presença de compostos com atividade inibidora ou estimulatória nas folhas de B. ungulata revelando potencial fitotóxico sobre as plântulas de alface.

  15. Ensino/aprendizagem de espanhol em Porto Seguro/BA: investigação acerca das significações docentes sobre o papel da epistemologia do educar em língua estrangeira para a formação do sujeito capaz de cruzar fronteiras culturais

    Directory of Open Access Journals (Sweden)

    Elissandro dos Santos Santana

    2012-09-01

    Full Text Available Este trabalho é fruto de uma pesquisa realizada nos meses de agosto e setembro de 2011 em três escolas de Porto Seguro em torno do seguinte tema: ensino/aprendizagem de espanhol em Porto Seguro/BA: investigação acerca das significações docentes sobre o papel da epistemologia do educar em língua estrangeira para a formação do sujeito capaz de cruzar fronteiras culturais. Na pesquisa de campo, fora aplicado um questionário semi-estruturado a quatro professores de língua espanhola, grupo amostral significativo, haja vista que são poucas as escolas que oferecem o idioma na cidade. O objetivo da pesquisa foi compreender as significações docentes concernentes ao papel da epistemologia do educar em espanhol como língua estrangeira para a formação do sujeito capaz de cruzar fronteiras culturais. Para tanto, a pesquisa fundamentou-se em torno de alguns teóricos da Linguística Aplicada e Manuais de Ensino de Línguas. O trabalho está dividido nas partes, a saber: Introdução, Algumas considerações presentes em manuais de ensino de línguas e/ou teóricos da educação no que tange à epistemologia do educar em língua estrangeira, Metodologia adotada na pesquisa, Análise dos resultados e Considerações finais.

  16. Dihydroflavonol glycosides and flavan-3-ols from Bauhinia aurea%红绒毛羊蹄甲中的二氢黄酮醇苷和黄烷醇类成分

    Institute of Scientific and Technical Information of China (English)

    尚小雅; 李帅; 王映红; 王素娟; 杨永春; 石建功

    2007-01-01

    目的:研究红绒毛羊蹄甲Bauhinia aurea的化学成分.方法:应用各种色谱技术进行分离纯化,用MS和NMR分析确定化合物结构.结果:从红绒毛羊蹄甲90%乙醇提取物的醋酸乙酯萃取部位中分离得到8个化合物,分别鉴定为异黄杞苷(1)、落新妇苷(2)、新落新妇苷(3)、异落新妇苷(4)、新异落新妇苷(5)、(2R,3S)-儿茶精6)、(2R,3R)-表儿茶精(7)和(2R,3R)-3-O没食子酰表儿茶精(8).结论:除化合化2,6和8外,其余化合物均属首次从该属植物中发现.

  17. Effects of 60 Co-γ Ray Irradiation on the Seed Germination and Seedling Growth of Bauhinia variegata%60Co-γ辐照对洋紫荆种子发芽及幼苗生长的影响

    Institute of Scientific and Technical Information of China (English)

    徐佳琦; 戚嘉敏; 朱雯; 许逸林; 奚如春

    2016-01-01

    Different doses(0, 20, 40, 60, 80, 100 Gy) of 60Co-γ ray irradiation were applied to the dry Bauhinia variegata seeds and the effects on seed germination and seedling growth were investigated to explore the mutagenic effects of radiation. The results showed that with the increase of radiation the seed germination rate decreased first and rise again, decreasing from 51.66%(20 Gy) to 42.66%(60 Gy) and rising to 54.33%(100 Gy) after 6 months. Irradiation can promote the growth of the radical, the radical increased from 2.49 cm in the control group to 3.28 cm. Seed germination rate and seedling survival rate were reduced in the irradiation treatment of 40~60 Gy. The inhibition effect on seedling height and its ground diameter growth were found by radiation after seedling grew for six months. Also, the inhibition effect were found on the angle of leaf. However, no obvious deformity in the seedling morphology was found.%分别采用0,20,40,60,80,100 Gy 剂量的60Co-γ射线辐射洋紫荆(Bauhinia variegata)种子,观察测定其种子发芽率和幼苗生长指标,研究辐照对洋紫荆种子的诱变效应。结果表明,在0~100 Gy 辐射剂量内,随着辐照剂量的增加,洋紫荆种子发芽率出现先下降再上升的趋势,由51.66%(20 Gy)降至42.66%(60 Gy),又升高至54.33%(100 Gy)。一定剂量的辐照能促进胚根的生长,其中20 Gy 的辐射下平均胚根长度为3.28 cm,显著大于对照组(2.49 cm)(P<0.05)。40~60 Gy 辐射剂量使种子发芽率和幼苗成活率降低。各辐照处理对幼苗苗高、地径生长具有明显抑制作用,幼苗生长6个月后,各辐照组苗高、地径均显著小于对照组(P<0.05),同时对叶片分裂角度也具有一定的抑制作用但幼苗未出现致畸形态。

  18. Rapid screening of transferrin-binders in the flowers of Bauhinia blakeana Dunn by on-line high-performance liquid chromatography-diode-array detector-electrospray ionization-ion-trap-time-of-flight-mass spectrometry-transferrin-fluorescence detection system.

    Science.gov (United States)

    Liu, Meixian; Dong, Jing; Lin, Zongtao; Niu, Yanyan; Zhang, Xiaotian; Jiang, Haixiu; Guo, Ning; Li, Wei; Wang, Hong; Chen, Shizhong

    2016-06-10

    Transferrin (Transferrin, TRF, TF) has drawn increasing attention in cancer therapy due to its potential applications in drug delivery. TF receptor, highly expressed in tumor cells, recognizes and transports Fe(3+)-TF into cells to release iron into cytoplasm. Thus, discovering TF-binding compounds has become an active research area and is of great importance for target therapy. In this study, an on-line analysis method was established for screening TF-binding compounds from the flowers of Bauhinia blakeana Dunn using a high-performance liquid chromatography-diode-array detector-multi-stage mass spectrometry-transferrin-fluorescence detector (HPLC-DAD-MS(n)-TF-FLD) method. As a result, 33 of 80 identified or tentatively characterized compounds in the sample were TF-binding active. Twenty-five flavonol glycosides and eight phenolic acids were identified as TF-binders. Twelve of these active compounds together with six standard compounds were used to study the dose-response effects and structure-activity relationships of flavonoids and phenolic acids. The method was validated by vitexin with a good linearity in the range of concentrations used in the study. The limit of detection for vitexin was 0.1596 nmol. Our study indicated that the established method is simple, rapid and sensitive for screening TF-binding active compounds in the extract of Bauhinia blakeana Dunn, and therefore is important for discovering potential anti-cancer ingredients from complex samples for TF related drug delivery.

  19. Allelopathic activity of fresh and dry extracts of Stryphnodendron adstringens (Mart. Coville and Bauhinia forficata link leaves on the germination and initial development of tomato seedlings / Atividade alelopática dos extratos fresco e seco de folhas de barbatimão (Stryphnodendron adstringens (Mart. Coville e pata-devaca (Bauhinia forficata link sobre a germinação e desenvolvimento inicial de plântulas de tomate

    Directory of Open Access Journals (Sweden)

    Gisela Ferreira

    2009-07-01

    Full Text Available The objective of this study aimed at the verification of the allelopatic action of extracts of “pata-devaca” (Bauhinia forficata Link and “barbatimão” (Stryphnodendron adstringens (Mart. Coville on seeds of tomato (Lycopersicum esculentum Mill. Tomato seeds placed in translucent “gerbox” were treated with aqueous extracts prepared with fresh and dry leaves of the tested species at the following concentrations: 100%, 75%, 50%, 25%, and 0% (control. The experimental design was completely randomized with five treatments and five replications of 25 seeds per plot per species. The data were submitted to the analysis of variance and the means compared by Tukey test at 5% of probability. Germination percentage, mean time and germination rates (MGT and MGR, and mean of the primary root length were evaluated. No difference was found for germination percentage of tomato seeds for the different extracts. For MGR, all treatments with fresh leaf extract differed from the check. MGT and MGR showed differences among the following dry leaf extracts concentrations: 25%, 75% and 100%. All treatments presented inhibitory effect on the length of the primary root.O trabalho teve por objetivo verificar a ação alelopática de pata-de-vaca (Bauhinia forficata Link, e barbatimão (Stryphnodendron adstringens (Mart. Coville em sementes de tomate (Lycopersicum esculentum Mill. As sementes de tomate foram tratadas com extratos aquosos preparados a partir de folhas frescas e secas das espécies-teste nas concentrações de 100%, 75%, 50%, 25% e 0% (controle e acondicionadas em ‘gerbox’ transparente. O delineamento experimental foi inteiramente casualizado, com cinco tratamentos e cinco repetições de 25 sementes por parcela por espécie-teste. Foram avaliados porcentagem, tempo e velocidade médios de germinação e, comprimento médio de raiz primária. Os dados foram submetidos à análise de variância e as médias comparadas por Tukey a 5% de

  20. Influência do processo de secagem e condição de armazenamento de extratos secos de Bauhinia forficata e Passiflora alata sobre seu perfil de dissolução

    Directory of Open Access Journals (Sweden)

    C.R.F. SOUZA

    2015-03-01

    Full Text Available No Brasil, os produtos fitoterápicos são considerados medicamentos, sendo necessário o estabelecimento de estudos que assegurem a manutenção dos requisitos de qualidade durante o processamento e o armazenamento. Testes de dissolução podem ser empregados para se estimar a biodisponibilidade de um fármaco, sendo uma análise rotineira no desenvolvimento e controle de qualidade de medicamentos alopáticos. A determinação do perfil de dissolução de fitoterápicos também pode ser um importante critério para avaliação da sua qualidade lote-a-lote, bem como para os estudos de desenvolvimento e de estabilidade. O objetivo deste trabalho foi investigar a influência dos métodos de secagem e da condição de armazenagem sobre os perfis de dissolução dos flavonoides totais de extratos secos de duas plantas medicinais bastante difundidas no Brasil, a Bauhinia forficata e a Passiflora alata. Os extratos secos foram produzidos pelo processo de secagem em leito de jorro e em spray drying, sendo submetidos a condições de armazenagem aceleradas (temperatura de 40 ± 2ºC e umidade relativa de 75 ± 5%, por um período de 90 dias. Os perfis de dissolução foram obtidos para amostras de extratos secos antes e após o período de armazenamento. O teor de flavonoides totais foi quantificado por espectrofotometria. Os extratos secos de B. forficata e P. alata apresentaram adequada liberação de flavonoides nos ensaios de dissolução. Os extratos secos de Passiflora alata apresentaram completa dissolução dos flavonoides, 92% e 98% dos teores originais após 60 minutos de ensaio, respectivamente para o extrato seco em leito de jorro e em spray drying.

  1. 粉花羊蹄甲的营养成分及作为特色蔬菜的评价%Nutrients content of Bauhinia variegata var.candida and its value as an edible wild flower

    Institute of Scientific and Technical Information of China (English)

    许又凯; 刘宏茂; 刀祥生; 肖春芬; 蔡传涛; 陈光红; 许自艳

    2004-01-01

    粉花羊蹄甲(Bauhinia vaariegata var.candida Linn)是分布于热带亚洲的苏木科植物,该植物的花是云南热带、亚热带地区许多少数民族经常食用的野生花卉.作者报道了粉花羊蹄甲1981~2002年物侯观测结果,分析了粉花羊蹄甲的矿物质、微量元素、蛋白质、氨基酸和维生素的含量并与常用花卉类蔬菜黄花菜进行了比较.分析结果表明,粉花羊蹄甲花中的矿物质微量元素P,K,Na,Ca,Mg,Fe,Cu和Mn的含量均高于黄花菜,Zn的含量低于黄花菜.维生素中,粉花羊蹄甲维生素B1高于黄花菜,维生素C和胡萝卜素的含量分别是黄花菜的6.4倍和4.5倍,维生素B2和维生素E的含量略低于黄花菜.粉花羊蹄甲的蛋白质总质量分数(15.79%)低于黄花菜(19.19%),但蛋白质中氨基酸总质量分数为12.74%,高于黄花菜(9.99%);比较粉花羊蹄甲和黄花菜蛋白质中必需氨基酸与标准蛋白质(鸡蛋)中必需氨基酸贴近值,粉花羊蹄甲的贴近值为0.85,比黄花菜的贴近值(0.73)高.认为粉花羊蹄甲是一种营养丰富、具有很高开发潜力的野生食用花卉.

  2. Bacterial ecology of tilapia fresh fillets and some factors that can influence their microbial quality Ecologia bacteriana de filés frescos de tilápia e de pontos capazes de influenciar a sua qualidade microbiológica

    Directory of Open Access Journals (Sweden)

    Cleube Andrade Boari

    2008-12-01

    Full Text Available The purpose of research was to investigate the bacterial ecology of tilapia (Oreochromis niloticus fresh fillets and some factors that can influence its microbial quality. Samples of fish cultivation water (n = 20, tilapia tegument and gut (n = 20 and fresh fillets (n = 20 were collected in an experimental tilapia aquaculture located in the city of Lavras, Minas Gerais, Brazil. Staphylococcus spp., Aeromonas spp., Enterococcus spp. and Enterobacteriaceae were quantified using selective plating. For the enumeration of Pseudomonas spp., the most probable number technique (MPN was utilized. Bacterial colonies (n = 198 were identified by Gram strain and biochemical tests. Aeromonas spp., Pseudomonas spp., Enterococcus spp. and Enterobacteriaceae were found in the cultivation water (water from a fishpond cultivation, tegument, gut, and fresh fillets. Staphylococcus spp. was not isolated in the cultivation water. Salmonella spp. was not detected. The count variable of 10 to 10³ CFU or MPN.(g or mL-1. Associated to freshwater tilapia fillet processing, there is a large variety of microorganisms related to foodborne illnesses and fish products deterioration.A presente pesquisa foi conduzida com o objetivo de se investigar a ecologia microbiana de filés frescos de tilápia (Oreochromis niloticus e de pontos capazes de influenciar em sua qualidade microbiológica. Para sua condução, amostras de água de cultivo (n = 20, tegumento e trato gastrintestinal (n = 20 e filés frescos (n = 20 foram coletados em um sistema de produção aqüícola de água doce localizado em Lavras, Minas Gerais, Brasil. Staphylococcus spp., Aeromonas spp., Enterococcus spp., Enterobacteriaceae foram quantificados através de plaqueamento seletivo. Pseudomonas spp. foi enumerada através da técnica do número mais provável. Colônias (n = 198 foram identificadas por coloração de Gram e testes bioquímicos. Aeromonas spp., Pseudomonas spp., Enterococcus spp. e

  3. Can the Glittre ADL test differentiate the functional capacity of COPD patients from that of healthy subjects? O teste de AVD-Glittre é capaz de diferenciar a capacidade funcional de indivíduos com DPOC da de saudáveis?

    Directory of Open Access Journals (Sweden)

    Krislainy S. Corrêa

    2011-12-01

    Full Text Available BACKGROUND: The Glittre ADL (TGlittre test is a specifically designed to assess functional limitation in chronic obstructive pulmonary disease (COPD patients. However, it is not known if it can differentiate the performance of these patients from healthy subjects. OBJECTIVES: To investigate whether the Glittre ADL test is able to differentiate the functional capacity of COPD patients from that of healthy subjects and to compare the cardiorespiratory response between Glittre ADL and the six-minute walk test (6MWT. METHODS: The study included 10 patients with COPD (GOLD 2 to 4 and 10 healthy subjects matched by age who performed the following: spirometry pre-and post-bronchodilator, a Glittre ADL test and two 6MWT on two consecutive days. RESULTS: The performance of COPD (FEV1%pred= 38.1±11.8, age=64±10 years, BMI=23.7±5.2 kg/ m² was worse than the control group on TGlittre (5.26±2.9 min, 3.3±0.3 min, p0.05. CONCLUSIONS: The performance of COPD patients is worse than that of healthy subjects on the Glittre ADL test, with a greater increase in dyspnea and similar heart rates.CONTEXTUALIZAÇÃO: O teste de AVD Glittre (TGlittre é um teste específico desenvolvido para avaliar a limitação funcional em pacientes com doença pulmonar obstrutiva crônica (DPOC, no entanto não se sabe qual sua capacidade de diferenciar o desempenho de doentes do de indivíduos saudáveis. OBJETIVOS: Investigar se o TGlittre é capaz de diferenciar a capacidade funcional de pacientes com DPOC da de indivíduos normais, além de comparar a resposta cardiorrespiratória induzida pelo TGlittre com a do teste de caminhada de seis minutos (TC6min. MÉTODOS: Participaram do estudo dez indivíduos com DPOC (GOLD 2 a 4 e dez indivíduos saudáveis de mesma faixa etária, realizando as seguintes avaliações: espirometria pré e pós-broncodilatador; um TGlittre e dois TC6min em dois dias consecutivos. RESULTADOS: O grupo DPOC (VEF1%prev = 38,1±11,8, idade = 64±10 anos

  4. Los vínculos de los que la familia es capaz

    Directory of Open Access Journals (Sweden)

    Gisela Daza Navarrete

    1999-10-01

    Full Text Available La familia es sujeto y objeto de transformaciones entretejidas en el curso de los acontecimientos que se suceden en la producción económica y social en el capitalismo occidental. Sin embargo, la posición periférica que ocupamos en él produce expresiones susceptibles de ser consideradas como constitutivas de nuestra singularidad, bien sea por el matiz específico de su manifestación, bien sea por su capacidad para ejercer resistencia al curso impuesto por la tendencia general. Este texto, prosiguiendo el acontecer de los cambios de lo social, describe la afectación de los vínculos familiares en la propagación de la normalización, en la generación de los padres y de sus hijos, para dar paso, más tarde, a una serie de prácticas afianzadas en una nueva expresión del poder, el control, cuya manifestaciones más densas tienen lugar con la generación de los nietos.

  5. Nuestro cerebro es capaz de anticiparse a lo que va a pasar

    OpenAIRE

    Mirasso, Claudio R.

    2014-01-01

    Nuestro cerebro es predictivo. Lo notamos al escuchar música, anticipando nuestra actividad cerebral a la melodía por venir cuando es conocida, o cuando Rafa Nadal responde en milésimas de segundo el saque de su rival. Esta capacidad de predicción puede desarrollarse a base de aprendizaje o entrenamiento, ocupándose la plasticidad neuronal del resto. El reto se encuentra en descubrir cuáles son los mecanismos neuronales responsables de estas accion...

  6. The Living life Program strategy for training of community health agents as social educators to give community attention in mental health El Programa Viva la Vida estrategia para entrenamiento de agentes comunitarios de salud como educadores sociales capaces de prestar atención comunitaria en salud mental O Programa Viva a Vida estratégia de capacitação de agentes comunitários de saúde como educadores sociais capazes de prestar atenção comunitária em saúde mental

    Directory of Open Access Journals (Sweden)

    Cristina Loyola

    2007-03-01

    é recursos humanos necesitamos para alterar el modelo asistencial. Y recordar que para garantizar el cuidado en salud mental tenemos que tener acogimiento, tratamiento e inclusión social.O Programa Viva a Vida, desenvolvido no estado do Maranhão no período 2001-2003, trabalhou com três interfaces: com os excluídos como clientela, com o treinamento sofisticado dos profissionais envolvidos como estratégia de ação e com uma ética orientada pela premissa de que todo humano nasce para ser livre, saudável, educado e feliz como guia. Após o treinamento de dez mil agentes comunitários de saúde esperamos que eles sejam capazes de identificar pessoas em sofrimento psíquico, fazer o acolhimento deste indivíduo no próprio domicílio, em primeira instância, e quando não for possível, encaminhá-lo para atendimento especializado na região, evitando o envolvimento de instâncias não terapêuticas como a polícia . O entendimento que norteou o Programa foi o de que para estudar as questões pertinentes à saúde mental temos que definir que recursos humanos necessitamos para re-direcionar o modelo assistencial. E reafirmar que para garantir o cuidado em saúde mental temos que ter acolhimento, tratamento e inclusão social.

  7. El movimiento indígena nacional ¿Único autor capaz de “destrabar” el conflicto?

    Directory of Open Access Journals (Sweden)

    Maya Lorena Pérez Ruíz

    2003-01-01

    Full Text Available Este artículo trata sobre la situación de los derechos indígenas en el conflicto entre el EZLN y el gobierno federal mexicano. Se busca demostrar cómo el contenido jurídico de las reformas constitucionales —empleadas, en diversos momentos, para impulsar u obstaculizar el diálogo y la negociación con los zapatistas a lo largo del conflicto— ha quedado subordinado a una disputa de orden político y militar. Asimismo, y en el contexto posterior a los ataques terroristas del 11 de septiembre del 2001 en Estados Unidos, se anañizan las opciones del movimiento indígena nacional mexicano para conseguir sus derechos y contribuir, al mismo tiempo, al acercamiento entre el EZLN y el gobierno federal.

  8. Modelo de Kano para a identificação de atributos capazes de superar as expectativas do cliente

    Directory of Open Access Journals (Sweden)

    Cristiano Roos

    2009-08-01

    Full Text Available Neste trabalho utilizou-se o Modelo de Kano para medir o grau de satisfação que um atributo pode trazer na prestação de um serviço sem fins lucrativos. Com base nos procedimentos técnicos utilizados este trabalho se classifica como pesquisa do tipo levantamento. A pesquisa de satisfação foi aplicada num restaurante sem fins lucrativos localizado na região central no estado do Rio Grande do Sul, cujo serviço é subsidiado pelo governo. Os resultados sugerem que, os atributos classificados em atributos unidimensionais - “limpeza dos utensílios”, “tempo de espera para atendimento”, “qualidade da refeição”, “qualidade da bebida”, “mesas disponíveis”, “boa ventilação” e “credibilidade e confiabilidade na comida” - dependem linearmente do nível do serviço oferecido. O atributo “variedade nos cardápios” classificado como atributo atrativo deve ser foco de atenção, pois se tiver alto desempenho trará plena satisfação. O atributo “preço das refeições” classifica-se como atributo obrigatório, se permanecer inalterado não traz satisfação, mas se aumentar o cliente ficará insatisfeito. O atributo “boa iluminação” enquadra-se como atributo neutro, o qual não resulta em qualquer satisfação ou insatisfação do cliente. A realização deste trabalho proporcionou um maior entendimento acerca do Modelo de Kano e também importante conhecimento para os acadêmicos em relação a melhoraria e compreensão desses atributos.

  9. Modelo de Kano para a identificação de atributos capazes de superar as expectativas do cliente

    OpenAIRE

    Cristiano Roos; Simone Sartori; Leoni Pentiado Godoy

    2009-01-01

    Neste trabalho utilizou-se o Modelo de Kano para medir o grau de satisfação que um atributo pode trazer na prestação de um serviço sem fins lucrativos. Com base nos procedimentos técnicos utilizados este trabalho se classifica como pesquisa do tipo levantamento. A pesquisa de satisfação foi aplicada num restaurante sem fins lucrativos localizado na região central no estado do Rio Grande do Sul, cujo serviço é subsidiado pelo governo. Os resultados sugerem que, os atributos classificados em at...

  10. Primação subliminar: uma ferramenta capaz de determinar o comportamento de escolha do consumidor?

    OpenAIRE

    Silva, José Fernando Morais da

    2012-01-01

    Mestrado em Psicologia das Emoções Muito se tem escrito sobre a existência de mensagens subliminares nos anúncios publicitários e propaganda política bem como as consequências da sua eficácia nos públicos a que se destinam. De forma premeditada ou não ela é uma realidade criando uma apreensão social pelo sentimento de subjugação a uma eventual manipulação da nossa vontade. O nosso trabalho teve a pretensão de ajudar a esclarecer o que está para além do senso comum. Realizamo...

  11. INGENIERIA DE PROTEINAS DE UNA b3-1,3-ENDOGLUCANASA LITICA CAPAZ DE PERMEABILIZAR CÉLULAS DE LEVADURA

    OpenAIRE

    2005-01-01

    La endo-B1,3-glucanasa Bgl ll de C. cellulans (0. xanthineolytica) se presenta como una buena alternativa para ser utilizada como enzima modelo de un grupo amplio de glicosil hidrolasas, por lo que los estudios efectuados sobre ella pueden ser fácilmente extrapolables a otras enzimas, dentro de las cuales pueden contarse enzimas de claro interés industrial. Muchos procesos biotecnológicos en los que estas enzimas pueden ser de utilidad operan bajo condiciones de pH no óptimas para su ac...

  12. INGENIERIA DE PROTEINAS DE UAN BETA-1,3-ENDOGLUCANASA LITICA CAPAZ DE PERMEABILIZAR CELULAS DE LEVADURA

    OpenAIRE

    OLIVERA NAPPA; ALVARO MARIA

    2005-01-01

    La endo-Beta ,3-glucanasa Bgl ll de C. cellulans (O. xanthineolytica) se presenta como una buena alternativa para ser utilizada como enzima modelo de un grupo amplio de glicosil hidrolasas, por lo que los estudios efectuados sobre ella pueden ser fácilmente extrapolables a otras enzimas, dentro de las cuales pueden contarse enzimas de claro interés industrial. Muchos procesos biotecnológicos en los que estas enzimas pueden ser de utilidad operan bajo condiciones de pH no óptimas para su acti...

  13. DESARROLLO DE UN SOFTWARE BASADO EN JAVA CAPAZ DE INTERPRETAR TRAZAS DE ARCHIVOS GENERADOS POR NS-2

    Directory of Open Access Journals (Sweden)

    Fredy Pachón Barbera

    2013-09-01

    Full Text Available En la simulación de una red de datos, se trata de evaluar, investigar y/o analizar su comportamiento  en un ambiente real, siempre buscando la optimización los recursos. El análisis de la información es un punto clave para conocer fortalezas y debilidades de la red simulada. El objetivo de este artículo es mostrar el desarrollo de una herramienta de interpretación de trazas generadas por NS-2 basado en el lenguaje de programación Java  y las variables estadísticas que se tuvieron en cuenta para la implementación, con el fin de facilitar el análisis de redes simuladas con la herramienta network simluator. Finalmente se logra la construcción del software, logrando determinar los cálculos de jitter, throughput y bytes enviados por cada nodo, a partir de las trazas generadas por NS-2.

  14. Elaboración de la unidad didáctica: ¿es tu nariz capaz de explicarte qué es un gas?

    Directory of Open Access Journals (Sweden)

    William Moreno Torres

    2009-10-01

    Full Text Available En la realización de esta unidad didáctica se pensó en una cosa que tal vez no se había considerado fuera del simple aprendizaje del concepto de los gases? la pretensión principal de la unidad didáctica es resaltar la importancia en que ésta forma de comprensión, de análisis y de síntesis, se puede utilizar para practicarlo, para utilizarlo de forma en que la mayoría de nuestra comunidad sepa de que estamos hablando y se interese por asumir este conocimiento en beneficio general y personal. En pocas palabras y aunque la unidad no se ha aplicado, lo que se pretende es a tener una ciencia accesible a la mayoría de las personas, que sin importar el nivel de escolaridad por lo menos conozca algo nuevo y que le de ideas para aplicarlo en su cotidianidad.

  15. Aislamiento y caracterización de un nuevo fago filamentoso de Vibrio cholerae capaz de transducir los genes de la toxina colérica.

    OpenAIRE

    Yovanny Izquierdo; Talena Ledón; Karen Marrero; Boris Luis Rodríguez; Rafael Fando; Javier Campos

    2007-01-01

    Un nuevo bacteriófago filamentoso, designado VEJ¿, se aisló de la cepa de Vibrio cholerae MO45 del serogrupo O139. Se realizó una caracterización molecular preliminar de este fago, que incluyó la secuenciación de su genoma completo, el estudio de la estructura genómica y la identificación del receptor del fago, así como del gen que codifica la proteína mayoritaria de la cápsida mediante la secuenciación de la región amino terminal de esta última. La secuencia nucleotídica del genoma de VEJ¿,...

  16. "¿Mi novio sería capaz de matarme?" Violencia en el noviazgo entre adolescentes de la Universidad Autónoma Chapingo, México

    Directory of Open Access Journals (Sweden)

    Verónica Vázquez García

    2008-01-01

    abierta. Examinamos los tres tipos de violencia que describen las chicas (psicológica, física y sexual y la explicación que dan de ella después de haberla vivido. El artículo constituye uno de los primeros trabajos en el país en analizar la violencia en el noviazgo y en el ámbito universitario. Demostramos que el material testimonial puede ser estudiado en profundidad y con rigor si se aplica un método sistemático de análisis anclado en la teoría social y de género. Es necesario hacer estudios similares en otras universidades del país y conocer el fenómeno de la violencia de género desde la vivencia masculina.

  17. "¿Mi novio sería capaz de matarme?" Violencia en el noviazgo entre adolescentes de la Universidad Autónoma Chapingo, México

    OpenAIRE

    Verónica Vázquez García; Roberto Castro

    2008-01-01

    En este artículo analizamos la violencia en las relaciones de noviazgo en la Universidad Autónoma Chapingo (Uach), una institución mexicana dedicada a formar recursos humanos en ciencias agronómicas. La Uach posee tres características: atrae estudiantes de medios desfavorecidos de todo el país; recibe más hombres que mujeres debido a la construcción de la Agronomía como una ocupación masculina; y, funciona como una institución total en el sentido de que sus estudiantes dejan la casa paterna a...

  18. Prototheca zopfii (Chlorophyta capaz de utilizar “gas oil”, registrada por primera vez en aguas contaminadas de Argentina

    Directory of Open Access Journals (Sweden)

    María S. Vigna

    2002-01-01

    Full Text Available Prototheca zopfii es una alga cocoide, incolora que hemos aislado del río Reconquista en septiembre del 2000 (Argentina, Prov. de Buenos Aires, Pdo. Tigre. Para la correcta identificación de la especie se llevaron a cabo estudios morfológicos y fisiológicos (asimilación de fuentes carbonadas. La capacidad de utilizar “gas oil” de P. zopfii se evaluó por su capacidad de crecimiento en medios de cultivo conteniendo “gas oil” hasta el 10% (v/v como única fuente de carbono y energía

  19. Modelo de seleção de características das tecnologias capazes de inovação em TIC

    Directory of Open Access Journals (Sweden)

    André Marques Cavalcanti

    2014-01-01

    Full Text Available Innovation has the capacity to improve performance, solve problems, add value, and create competitive advantage for organizations. Since companies need to employ information and communication technologies to support all their activities, it is essential to identify which features of technological capabilities for innovation should be considered that allow the act of innovating to be an on-going process linked to companies’ strategies. Thus, this article proposes a model for auditing the innovation capabilities that guide decision-making, taking into account the uncertainties associated with the complexity of innovation management processes based on an ICT infrastructure. From that template, it can be established what content should be made available and integrated. To validate the model, a survey was carried out with 50 small ICT companies in the State of Pernambuco, revealing a strong correlation between the features of the performance audit of the surveyed companies with their capacity to innovate.

  20. 洋紫荆化学成分研究%Chemical constituents from Bauhinia variegata L.

    Institute of Scientific and Technical Information of China (English)

    赵燕燕; 崔承彬; 蔡兵; 孙启时

    2005-01-01

    目的研究洋紫荆中的化学成分.方法采用硅胶、Sephadex LH-20柱及ODS柱色谱分离纯化,根据理化常数和光谱数据进行结构鉴定.结果与结论得到7个化合物,分别鉴定为(-)-表儿茶素(1)、原儿茶酸(2)、原儿茶酸乙酯(3)、没食子酸甲酯(4)、没食子酸乙酯(5)、对羟基苯甲酸(6)、五味子苷(7),其中化合物1、2、3、7是首次从该属植物中分离得到.

  1. OA02.04. Wound healing property of Kanchanara [Bauhinia variegata Linn] - An experimental study.

    Science.gov (United States)

    Hiremath, Shilpa; Pradeep

    2013-01-01

    Purpose: Wound a clinical entity, is commonly seen as a result of various etiological factors like trauma etc. Kanchanara a plant origin drug. Many of the Nighantu's have mentioned vrana shodhana and vrana ropana properties of Kanchanara. Hence present study of evaluating wound healing property of Kanchanara bark in the form of churna and ointment [sikta taila base] preparations has been taken up. Method: Albino rats were the experimental model. 36 albino rats were selected and divided into 6 groups of 6 rats each. 3 groups were used for excision wound model and remaining 3 groups were used for incision wound model, one group being served as the control and remaining two group for the trial drug. Churna and ointment were used for both excision and incision groups. Albino rats were wounded under aseptic conditions using wound techniques suggested by Marton and Malone [1972] and also by hunts model[1969]. In case of excision wound area of wound was measured once in 4 days by using graph sheet. In case of incision wound tensile strength was found out by using tensinometer on 10th post wounding day. Result: The statistical values of both groups were compared with control group and it showed that: 1. Kanchanara ointment promoted epithelization, wound contraction and period of epithelization was reduced in case of excision wound. 2. In incision wound also Kanchanara ointment helps in increasing collagenation and tensile strength. Both ointment and churna group are highly significant when compared with control group. On comparison of ointment group with churna group it statistically showed insignificance. No untoward side effects were noticed during the trial and the wound, healed with minimal scar. Conclusion: Kanchanara ointment and its churna is an effective, safe and well tolerated therapy in the treatment of both excision and incision wound.

  2. SMALL INTESTINE BACTERIAL OVERGROWTH IN PATIENTS WITH FAILURE OF THE VALVE BAUHINIAS AND AFTER ITS SURGICAL TREATMENTS (THE FIRST RESULTS

    Directory of Open Access Journals (Sweden)

    V. L. Martvnov

    2015-01-01

    Full Text Available Оbjective: diagnosis of the a small intestine of bacterial overgrowth syndrome (SIBO in patients with the failure of the bauginias valve (FBV and after its surgical correction.Material and methods. Patients of the studied groups were examined by means of direct and indirect methods of diagnostics of SIBO. Bacteriological research of an aspirate of aillium gut and other operational material was conducted. To all patients the hydrogen respiratory test was carried out and highquality reaction of urine to an indican was carried out. 50 patients are examined, from them 30 are inclu ded in the main group by which surgical correction of FBV – a bauginoplastik is made; 20 patients are included in group of control at which the illeocecal valve is well-founded. Patients of the main group were examined before operation and for the 7th and 45th days after a bauginoplastik.Results. At all patients of the main group SIBO of varying severity is defined, at 80% of patients of SIBO was localized in distal part of the small intestine. Patients with normal function of the ileocecal valve a SIBO did not suffer. At 76% of patients revealed signs of a mezadenitisof a small intestine, the fact of a bacterial translocation at SIBO is confirmed. In 7 days after surgical correction of the bauginiasvalve normalization of a peak and background excretion of hydrogen was noted at 37% of patients. For the 45th days at all patients the hydrogen digram met standard.Conclusions. The failure of the bauginiasvalveis obligatory followed by a small intestine of bacterial overgrowth syndrome, surgical correction is an effective method of correction of a SIBO at patients with FBV.

  3. Cultivation Techniques of Bauhinia variegata L.%宫粉紫荆栽培技术规程

    Institute of Scientific and Technical Information of China (English)

    马骁勇; 林秀莲; 阮凌暄; 周颖军; 杨自轩; 陈晓茹; 杨丽华

    2016-01-01

    宫粉紫荆作为观花植物,在园林绿化中应用越来越多.从种子、苗木繁育、种植、养护管理、成株期病虫害防治等方面描述了宫粉紫荆栽培技术规程,为其生产提供了技术参考.

  4. A natação é capaz de manter a saúde do tecido ósseo e minimizar a reabsorção óssea pós-menopausa?

    Directory of Open Access Journals (Sweden)

    Tâmara Kelly Delgado Paes Barreto

    2014-04-01

    Full Text Available Objetivo: Estudou-se o efeito da natação sobre o crescimento somático e ósseo de ratas. Métodos: usaram-se 40 ratas Wistar neonatas separadas em grupo glutamato monossódico (GluM, n = 20, que recebeu solução de MSG (4 mg/g, em dias alternados, nos primeiros 14 dias de vida; e Grupo Salina (SAL, n = 20, que recebeu solução salina na mesma dose e no mesmo período. Aos 60 dias de vida, o grupo GluM foi ovariectomizado (GluMO e o SAL passou apenas pelo estresse cirúrgico. Posteriormente, metade dos animais de cada grupo iniciou o treinamento de natação, o que resultou nos grupos Salina sedentário (SALsed, n = 10, Salina natação (SALnat, n = 10, Glutamato ovariectomia sedentário (GluMOsed, n = 10 e Glutamato ovariectomia natação (GluMOnat, n = 10. Ao término do experimento, os animais tiveram o comprimento longitudinal mensurado e foram pesados; o rádio foi pesado e o comprimento, avaliado. Resultados: Os animais do grupo GluMOsed apresentaram peso corpóreo e comprimento longitudinal menores em relação ao SALsed. A natação diminuiu o peso corpóreo, porém não exerceu influência no comprimento longitudinal dos animais do grupo GluMOnat em relação ao GluMOsed. Peso corpóreo e comprimento longitudinal foram menores nos animais do grupo SALnat quando comparados aos do SALsed. Peso e comprimento do rádio dos animais do grupo GluMOsed foram menores do que os do SALsed. Não houve diferença desses parâmetros entre os grupos GluMOsed e GluMOnat. Contudo, foram menores nos animais do grupo SALnat em relação ao SALsed. Conclusão: O treino de natação não exerce influência no tecido ósseo previamente afetado durante o período neonatal e ainda pode causar prejuízo ao tecido ósseo sadio

  5. “¿Mi novio sería capaz de matarme?” Violencia en el noviazgo entre adolescentes de la Universidad Autónoma Chapingo, México

    Directory of Open Access Journals (Sweden)

    Verónica Vázquez García

    2008-10-01

    Full Text Available En este artículo analizamos la violencia en las relaciones de noviazgo en la Universidad Autónoma Chapingo (Uach, una institución mexicana dedicada a formar recursos humanos en ciencias agronómicas. La Uach posee tres características: atrae estudiantes de medios desfavorecidos de todo el país; recibe más hombres que mujeres debido a la construcción de la Agronomía como una ocupación masculina; y, funciona como una institución total en el sentido de que sus estudiantes dejan la casa paterna a la edad de 14 ó 15 años para vivir en o cerca de la universidad. El material de análisis está conformado por ocho testimonios anónimos escritos por estudiantes o ex-estudiantes de la universidad, a raíz de una convocatoria abierta. Examinamos los tres tipos de violencia que describen las chicas (psicológica, física y sexual y la explicación que dan de ella después de haberla vivido. El artículo constituye uno de los primeros trabajos en el país en analizar la violencia en el noviazgo y en el ámbito universitario. Demostramos que el material testimonial puede ser estudiado en profundidad y con rigor si se aplica un método sistemático de análisis anclado en la teoría social y de género. Es necesario hacer estudios similares en otras universidades del país y conocer el fenómeno de la violencia de género desde la vivencia masculina.

  6. Pacientes com a Doença de Parkinson são capazes de melhorar seu desempenho em tarefas virtuais do Xbox Kinect®: “uma série de casos”

    Directory of Open Access Journals (Sweden)

    Felipe Augusto dos Santos Mendes

    2015-12-01

    Full Text Available A utilidade dos videogames na reabilitação de pacientes com Doença de Parkinson (PDP vem sendo demonstrada. Contudo, a discussão sobre a seleção dos jogos utilizados ainda é escassa, embora fundamental para recomendação de seu uso terapêutico. Não foram, até o momento, encontrados estudos sobre a utilização do Xbox Kinect® (XK na reabilitação de PDP. O objetivo deste estudo foi investigar as modificações de desempenho de PDP, decorrentes do treino, por meio das mudanças nas pontuações de jogos do XK, em cada sessão. Sete PDP em estágios leve a moderado realizaram 14 sessões de treinamento em quatro jogos previamente selecionados. As pontuações foram registradas para análise da curva de desempenho entre as sessões. Foram feitas análises de variância para medidas repetidas considerando-se um grupo e 14 sessões, seguidas por testes Post Hoc Tukey-Kramer para verificar as diferenças entre as mesmas (p≤ 0.05. Os resultados mostraram que os PDP melhoraram seu desempenho em todos os jogos, porém em momentos diferentes. Concluiu-se que os PDP do presente estudo mostraram capacidade de melhorar o desempenho em jogos do XK, mas que a melhora depende das demandas e da presença de fatores facilitadores da aprendizagem, reforçando a importância da sua escolha com propósito de reabilitação.

  7. RESILIÊNCIA E FRACASSO ESCOLAR: UMA ANÁLISE DOS FATORES DE RISCO E PROTEÇÃO PRESENTES NAS FAMÍLIAS E ESCOLAS CAPAZES DE INTERFERIR NO PROCESSO DE APRENDIZAGEM

    Directory of Open Access Journals (Sweden)

    Paula Knychala do Carmo

    2016-04-01

    Full Text Available Resumo: A partir da Sociologia da Educação, o fracasso escolar é considerado como a representação da relação que se estabelece entre o meio familiar e social do aluno com a escolarização, bem como resultante do próprio investimento que as famílias depositam na educação de seus filhos. O artigo traz os fatores de risco e de proteção presentes nas famílias e nas escolas e como estes se associam ao processo de aprendizagem e fracasso escolar, bem como com a resiliência. Entende-se por resiliência a capacidade de superação diante uma situação de adversidade. E, por conjectura, acredita-se que alunos com características de resiliência demonstram ter mais recursos internos e externos que os levem à superação do fracasso escolar.Palavras-chave: Fracasso Escolar. Escola. Família. Resiliência.Abstract: From the Sociology of Education, school failure are considered as the representation of the relationship established between the family and social environment of the student with the schooling and investment resulting from own families to settle in the education of their children. The article brings family and educational factors that may favor or disfavor learning. In addition to checking the relation that is between school failure and a risk level as well as between a context of protection and the development of resilience characteristics. Means for overcoming resilience capacity on an adversarial situation. In addition, by conjecture, it believed that students with resilience characteristics show to have internal and external resources that lead to the overcoming of school failure.Keywords: School Failure. School. Family. Resilience.Recebido em: 12/08/2015  – Aceito em 03/03/2016

  8. O exercício físico é capaz de melhorar expressão de AMPK e GLUT4 em músculo esquelético de ratos alcoolistas e/ou tabagistas

    OpenAIRE

    2015-01-01

    Alcohol and cigarettes are the lawful psychoactive drugs more consumed in the world, usually being consumed in association. Metabolic alterations are linked to alcohol consumption and tobacco use involving impairment in the expression of proteins related to cellular metabolism. The objective of this study was to evaluate if the regular physical exercise can promote positive effects on the possible impairment related to expression of GLUT4 and AMPK in the skeletal muscle of smoker and/or alcoh...

  9. 洋紫荆中化学成分的分离与鉴定%Isolation,identification of the chemical constituents from Bauhinia variegata L.

    Institute of Scientific and Technical Information of China (English)

    赵燕燕; 崔承彬; 蔡兵; 孙启时

    2004-01-01

    目的研究洋紫荆中的化学成分.方法采用硅胶、聚酰胺、Sephedex LH-20柱色谱分离纯化,理化常数和谱学方法鉴定结构.结果 分离得到7个化合物和1个混合物,鉴定为friedelin(1)、24(R)-9,19-cyclolanost-3-one-24,25-diol(2)和24(S)-9,19-cyclolanost-3-one-24,25-diol(3)的混合物、豆甾烷-3-酮(4)、豆甾烷-4-烯-3-酮(5)、豆甾烷-3β-醇-6-酮(6)、豆甾烷-5-烯-3β-醇-7-酮(7)、β-谷甾醇(8)、大黄素甲醚(9).结论 化合物2和3的混合物、5、7、9为首次从该属植物中分离得到.

  10. 洋紫荆(宫粉紫荆、宫粉羊蹄甲、羊蹄甲)苏木科%Bauhinia variegata Linn.

    Institute of Scientific and Technical Information of China (English)

    陈定如

    2006-01-01

    @@ 半落叶乔木,高8-12 m,枝下高3m,干枝略直.树冠卵球形.叶互生,近革质,阔卵形或近圆形,宽5-13 cm,先端2裂片长为叶片长的1/4~1/3,顶端圆,基出脉9-11条.近伞房状的总状花序侧生或顶生;花两性;花冠直径约10cm,花瓣5片,粉红色,具紫红色条纹,芳香;能育雄蕊5枚,雌蕊1枚.荚果直刀形.花期2-4月;果期8-9月.

  11. 红花羊蹄甲抑菌活性的研究%Antimicrobial Effect of Ethanol Extract from Bauhinia Variegata

    Institute of Scientific and Technical Information of China (English)

    卢海啸; 陈永红

    2008-01-01

    红花羊蹄甲花提取物对大肠杆菌、枯草芽孢杆菌、金黄色葡萄球菌和土壤中的一些细菌均有抑菌效果,随着羊蹄甲花提取物浓度的增加,其对大肠杆菌、枯草芽孢杆菌、金黄色葡萄球菌的抑茵作用增强,呈一定的剂量依赖性.在同等浓度下羊蹄甲花提取物对金黄色葡萄球菌的抑菌效果最好,抑菌圈可达13.0mm,其次是枯草芽孢杆菌,抑茵圈可达到9.0mm,然后是大肠杆菌,抑茵圈为7.4mm.最后找出羊蹄甲花对这些细菌的最低抑茵浓度.红花羊蹄甲花提取物对米曲霉、黑曲霉无抑菌效果.

  12. 羊蹄甲果荚中总RNA提取的新方法%New Method for Total RNA Extraction in Legume of Bauhinia Variegata

    Institute of Scientific and Technical Information of China (English)

    夏海武; 吕柳新; 陈桂信

    2006-01-01

    高质量RNA的获得是开展羊蹄甲分子生物学研究的基础,但要获得高质量的植物总RNA比较困难,RNA的提取方法会因植物材料的不同而有较大差异.目前已有多种从植物组织中提取RNA的方法.但是由于羊蹄甲中的次生物质含量较高,这些常用方法并不适用于羊蹄甲RNA的提取.本文介绍一种羊蹄甲果荚中总RNA的提取方法,它可以有效的排除羊蹄甲组织中大量存在的多酚类和多糖类物质的干扰.所得RNA样品经紫外分光光度计检测和1%琼脂糖凝胶电泳分析证明无明显降解,且具有较高的纯度.获得的RNA样品在纯度和浓度上都可以满足RT-PCR,Northern blot和cDNA文库构建等分子生物学实验的要求.本方法尤其适用于多酚和多糖含量较高的植物组织的RNA提取,且试剂简单经济,试验结果稳定,重现性强.

  13. 景观树种宫粉羊蹄甲的扦插育苗试验%Experimental Study on the Bauhinia variegata L.Cutting Seedling Raising

    Institute of Scientific and Technical Information of China (English)

    魏丹; 唐洪辉; 赵庆; 胡柔璇; 邹伟杰

    2016-01-01

    羊蹄甲属景观树种,宫粉羊蹄甲是具有华南特色的观花树种,为进一步建立试验示范林以及优树推广,本研究采取扦插育苗以保持母株的优良性状.为了筛选出最佳的扦插条件,本次实验从扦插时间、生长促进剂、扦插基质不同方面来进行探讨,研究了不同的扦插条件对宫粉羊蹄甲扦插苗的成活率、根系生长和叶片生长的影响.2014~2015年,经春季、夏季、秋季三次扦插育苗试验,结果表明:在广州地区,宫粉羊蹄甲在秋季进行扦插育苗效果较好,成活率达到70%;经过对不同浓度的生根剂进行扦插试验的结果表明:秋季,生长剂为IBA、浓度100ppm的成活率最高,达到76.67%;基质为蛭石的成活率最高,达到了66.67%.

  14. Unfolding Studies of the Cysteine Protease Baupain, a Papain-Like Enzyme from Leaves of Bauhinia forficata: Effect of pH, Guanidine Hydrochloride and Temperature

    Directory of Open Access Journals (Sweden)

    Rosemeire A. Silva-Lucca

    2013-12-01

    Full Text Available Baupain belongs to the α+β class of proteins with a secondary structure-content of 44% α-helix, 16% β-sheet and 12% β-turn. The structural transition induced by pH was found to be noncooperative, with no important differences observed in the pH range from 3.0 to 10.5. At pH 2.0 the protein presented substantial non-native structure with strong ANS binding. Guanidine hydrochloride (GdnHCl-induced unfolding did not change the protein structure significantly until 4.0 M, indicating the high rigidity of the molecule. The unfolding was cooperative, as seen by the sigmoidal transition curves with midpoints at 4.7 ± 0.2 M and 5.0 ± 0.2 M GdnHCl, as measured by CD and fluorescence spectroscopy. A red shift of 7 nm in intrinsic fluorescence was observed with 6.0 M GdnHCl. Temperature-induced unfolding of baupain was incomplete, and at least 35% of the native structure of the protein was retained, even at high temperature (90 °C. Baupain showed characteristics of a molten globule state, due to preferential ANS binding at pH 2.0 in comparison to the native form (pH 7.0 and completely unfolded (6.0 M GdnHCl state. Combined with information about N-terminal sequence similarity, these results allow us to include baupain in the papain superfamily.

  15. 藤本羊蹄甲——首冠藤

    Institute of Scientific and Technical Information of China (English)

    华君

    2011-01-01

    羊蹄甲属植物中有我们最熟悉的香港市花洋紫荆(Bauhinia blakeana),以及在华南区厂为栽培的宫粉羊蹄甲(Bauhinia variegata)、白花羊蹄甲(Bauhinia variegata‘Candida‘)和红花羊蹄甲(Bauhinia purpurea)等,他们均为乔木,近年来有一种叫做首冠藤的藤本羊蹄甲已较多地应用于园林绿化,格外引人注目。

  16. The functional assessment Berg Balance Scale is better capable of estimating fall risk in the elderly than the posturographic Balance Stability System A avaliação funcional Berg Balance Scale é capaz de estimar melhor o risco de quedas em idosos do que a posturografia Balance Stability System

    Directory of Open Access Journals (Sweden)

    Vanessa Vieira Pereira

    2013-01-01

    Full Text Available The purpose of this study was to verify which instrument better identifies recurrent falls in the elderly. Ninety-eight old people, with an average age of 80±4 years, were submitted to an assessment of balance and fall risk by means of the Berg Balance Scale (BBS and the posturographic Balance Stability System (BSS. The BBS was correlated with the BSS (r=-0.27; p=0.008, age (r=-0.38; pA proposta do estudo foi verificar o instrumento que melhor identifica o risco de quedas recorrentes em idosos. O estudo incluiu 98 idosos, com média de idade de 80±4 anos, submetidos à avaliação do equilíbrio e risco de quedas por meio da Berg Balance Scale (BBS e da posturografia Balance Stability System (BSS. A BBS foi correlacionada com a BSS (r=-0,27; p=0,008, com a idade (r=-0,38; p<0,001 e com o número de quedas (r=-0,25; p=0,013. A análise de regressão logística mostrou que idosos classificados com risco de quedas na BBS apresentaram 2,5 (95%IC 1,08-5,78 mais chances de identificar quem teve duas quedas ou mais no último ano. A BBS identificou que quanto maior a idade pior é o equilíbrio funcional e demonstrou maior capacidade de identificar o risco de quedas sofridas no último ano quando comparada a BSS.

  17. Novos produtos naturais capazes de atuar na estabilização de microtúbulos, um importante alvo no combate ao câncer New natural products able to act on the stabilization of microtubules, an important target against cancer

    Directory of Open Access Journals (Sweden)

    Marcus Vinícius Nora de Souza

    2004-04-01

    Full Text Available Microtubules are involved in many aspects of cellular biology and represent an important target of anticancer chemotherapeutics. In the past five years, novel natural products such as epothilones, discodermolide, sarcodictyin, eleutherobin, and laulimalide, all of which have biological activities similar to those of paclitaxel (Taxolâ, have been discovered. Taxolâ is an important antitumor drug approved by the FDA for the treatment of ovarian, breast and non-small-cell lung carcinomas and became the first natural product described that stabilized microtubules avoiding the cellular replication. The present article reports new natural products that are able to act on the stabilization of microtubules.

  18. O treinamento de força com e sem o uso da plataforma vibratória é capaz de modular a variabilidade da frequência cardíaca em repouso? Strength training with and without a vibration platform is capable to modulate heart rate variability?

    Directory of Open Access Journals (Sweden)

    Rodrigo Poles Urso

    2012-09-01

    Full Text Available Esse trabalho comparou a variabilidade da frequência cardíaca (VFC de repouso antes e após 10 semanas de treinamento de força de grupos que usaram e não usaram a plataforma vibratória. Dezessete homens saudáveis foram divididos nos grupos treinamento de força convencional (TF ou treinamento de força sobre a plataforma vibratória a frequência de 30 Hz (TF+V30. As mensurações do desempenho de força dinâmica máxima (1-RM no exercício meio agachamento e da VFC de repouso foram feitas antes e após o programa de treinamento. Ambos os grupos tiveram aumento significante da força no período pós (de 15,1% no grupo TF e de 16,4% no grupo TF+V30, no entanto esse aumento se alterou na mesma magnitude para os dois grupos, não havendo diferença entre eles no desempenho de 1-RM nos períodos pré e pós-treinamento. Não foi observada diferença nas comparações entre os grupos e nas situações pré e pós-treinamento nas análises da VFC de repouso, no entanto a magnitude do effect size foi moderada (ES = 0,50-0,80 para algumas variáveis (intervalo R-R, desvio-padrão da média de todos os intervalos R-R - SDNN, raiz quadrada da média dos quadrados das diferenças entre os intervalos R-R sucessivos - RMSSD, componente de baixa frequência ajustada por meio de logarítmico - InLF e componente de alta frequência ajustada por meio de logarítmico - InHF no grupo TF+V30 após o período de treinamento. Conclui-se que 10 semanas de treinamento de força com e sem a presença da vibração proporcionou aumento semelhante no desempenho de 1-RM em ambos os grupos e, embora o estímulo adicional da vibração tenha dado indícios de maior atividade vagal analisado por meio do ES, nenhum dos grupos apresentou alteração significante da VFC.The current research compared resting heart rate variability (VFC before and after 10 weeks of strength training in groups that used and did not use a vibration platform. Seventeen healthy men were divided into conventional strength training (TF or strength training using a vibration platform with a frequency of 30 Hz (TF+V30 training groups. One repetition maximum load (1-RM on half squat exercise and VFC measurements were determined pre- and post-training program. Both groups had improved 1-RM load after the program (15.1% in TF group and 16.4% in TF+V30 group, although this increase was changed in the same extent for the two groups and there was no difference in 1-RM load between groups pre- and post-training program. No significant difference was observed in resting VFC measurements between groups pre and post-training program, however the magnitude of the effect size was moderated (ES = 0.50-0.80 for some variables (R-R interval, standard deviation of all R-R interval - SDNN, RMSSD, log-transformed of low frequency - InLF, and log-transformed of high frequency - InHF in TF+V30 group. It was concluded that 10 weeks of strength training program with or without the vibration platform provided similar increase in 1-RM load in both groups, and although some evidences in this study indicate that vibration can increase vagal activity analyzed by ES, in neither groups the strength training was able to change VFC significantly.

  19. Medicinal and ethnoveterinary remedies of hunters in Trinidad

    OpenAIRE

    Georges Karla; Harper Tisha; Lans Cheryl; Bridgewater Elmo

    2001-01-01

    Abstract Background Ethnomedicines are used by hunters for themselves and their hunting dogs in Trinidad. Plants are used for snakebites, scorpion stings, for injuries and mange of dogs and to facilitate hunting success. Results Plants used include Piper hispidum, Pithecelobium unguis-cati, Bauhinia excisa, Bauhinia cumanensis, Cecropia peltata, Aframomum melegueta, Aristolochia rugosa, Aristolochia trilobata, Jatropha curcas, Jatropha gossypifolia, Nicotiana tabacum, Vernonia scorpioides, Pe...

  20. 相思拟木蠹蛾危害洋紫荆发生特点及防治研究%Study on the Occurrence Characteristics and Prevention of Harming Bauhinia Variegata L.by Arbela Bailbarana Mats.

    Institute of Scientific and Technical Information of China (English)

    黎兆海; 蒙兴宁

    2016-01-01

    调查了相思拟木蠹蛾对洋紫荆的危害情况,分析总结了相思拟木蠹蛾在柳州市危害洋紫荆的发生特点,并结合生产实际提出了综合防治方法,以期为柳州市洋紫荆苗木生产和城市园林绿化应用提供参考.

  1. Cell proliferation inhibitory effect on human myeloid leukemia K562 of bauhinione from Bauhiniae variegata L.%洋紫荆中菲醌化合物bauhinione对K562细胞的增殖抑制作用

    Institute of Scientific and Technical Information of China (English)

    赵燕燕; 崔承彬; 孙启时

    2007-01-01

    目的 探讨从洋紫荆中分离得到的新的菲醌化合物bauhinione对体外培养的人类慢性骨髓性白血病K562细胞的增殖抑制作用.方法 应用罗丹明B法检测bauhinione对癌细胞K562和tsFT210的抑制作用;采用形态学观察以及流式细胞术(FCM)检测该化合物对K562细胞的细胞周期抑制和诱导凋亡作用;通过倍量稀释法考察该化合物的最小抑制质量浓度及其质量浓度为12.5 mg·L-1时的时效关系.结果 Bauhinione对两种癌细胞的IC50值分别为(24.9±2.1)mg·L-1和(111.36±3.5)mg·L-1,说明K562细胞对bauhinione的作用敏感;Bauhinione对K562细胞的最小抑制质量浓度为6.25 mg·L-1;对K562细胞的增殖抑制作用是通过G2-M期抑制和诱导凋亡实现的,并与时间呈依赖关系.结论 Bauhinione在体外有抑制K562细胞增殖的作用,为洋紫荆的抗癌活性成分之一.

  2. Study of fossil wood from the Middle–Late Miocene sediments of Dhemaji and Lakhimpur districts of Assam, India and its palaeoecological and palaeophyto-geographical implications

    Indian Academy of Sciences (India)

    R C Mehrotra; S K Bera; S K Basumatary; G Srivastava

    2011-08-01

    In order to reconstruct the palaeoclimate, a number of fossil wood pieces were collected and investigated from two new fossil localities situated in the Dhemaji and Lakhimpur districts of Assam. They belong to the Tipam Group considered to be of Middle–Late Miocene in age and show affinities with Gluta (Anacardiaceae), Bischofia (Euphorbiaceae), Bauhinia, Cynometra, Copaifera-Detarium-Sindora, Millettia-Pongamia, and Afzelia-Intsia (Fabaceae). The flora also records a new species of Bauhinia named Bauhinia miocenica sp. nov. The assemblage indicates a warm and humid climate in the region during the deposition of the sediments. The occurrence of some southeast Asian elements in the fossil flora indicates that an exchange of floral elements took place between India and southeast Asia during the Miocene.

  3. Proteinase inhibitors in Brazilian leguminosae

    Directory of Open Access Journals (Sweden)

    C. A. M. Sampaio

    1991-01-01

    Full Text Available Serine proteinase inhitors, in the seeds of several Leguminosae from the Pantanal region (West Brazil, were studied using bovine trypsin, a digestive enzyme, Factor XIIa and human plasma Kallikrein, two blood clotting factors. The inhibitors were purified from Enterolobium contortisiliquum (Mr=23,000, Torresea cearensis (Mr = 13,000, Bauhinia pentandra (Mr = 20,000 and Bauhinia bauhinioides (Mr = 20,000. E. contortisiliquum inhibitor inactivates all three enzymes, whereas the T. cearensis inhibitor inactivates trypsin and Factor XSSa, but does nor affect plasma kallikrein; both Bauhinia inhibitors, on the other hand, inactivate trypsin and plasma kallikrein but only the Bpentandra inhibitor affects Factor XIIa. Ki values were calculated between 10 [raised to the power of] -7 and 10 [raised to the power of] -8 M.

  4. Mitochondrial and bioenergetic dysfunction in human hepatic cells infected with dengue 2 virus

    OpenAIRE

    El-Bacha, Tatiana; Midlej, Victor; Silva, Ana Paula Pereira da; COSTA,LEANDRO SILVA DA; Benchimol, Marlene; Galina, Antonio; POIAN,ANDREA T. DA

    2007-01-01

    Mitochondrial and bioenergetic dysfunction in human hepatic cells infected with dengue 2 virus correspondence: Corresponding author. Fax: +55 21 22708647. (El-Bacha, Tatiana) (El-Bacha, Tatiana) Laboratorio de Bioquimica de Virus, Instituto de Bioquimica Medica, Universidade Federal do Rio de Janeiro - RJ-Brasil--> , Av. Bauhinia n? 400 ? CCS Bloco H 2? andar--> , sala 22. Ilha do Governador--> ...

  5. Caesalpiniaceae (Leguminosae-Caesalpinioideae)

    NARCIS (Netherlands)

    Hou, Ding; Larsen, K.; Larsen, S.S.

    1996-01-01

    In Malesia the family contains 25 indigenous genera and 8 genera with only introduced species, as follows (in brackets the number of native and/or introduced species in Malesia): Acrocarpus (1), Afzelia (2), Amherstia (1), Bauhinia (69), Brownea (4), Caesalpinia (22), Cassia (4), Chamaecrista (5), C

  6. Metabolic responses of tropical trees to ozone pollution.

    Science.gov (United States)

    Chapla, J; Kamalakar, J A

    2004-07-01

    Plants fumigated with 40ppbv, 80ppbv and 120ppbv concentrations of O3 exhibited significant reduction in total chlorophyll content, RuBP carboxylase activity and net photosynthesis. The reduction in total chlorophyll activity ranged from 12 to 36% in Bauhinia variegata, 11 to 35% in Ficus infectoria and 3 to 26% in Pongamia pinnata on fumigation with O3, while the RuBP carboxylase activity was reduced by 10 to 32% in Bauhinia variegata, 10 to 23% in Ficus infectoria and 9 to 15% in Pongamia pinnata. The net photosynthesis was also reduced by 6 to 26% in B. variegata, 16 to 39% in F. infectoria and 7 to 31% in P. pinnata on fumigation with 03. The relative higher sensitivity of tropical trees to O3 suggests that the ambient air quality standards in tropical tree areas need to be stringent to prevent vegetation from air pollution.

  7. 香港市花--红花紫荆

    Institute of Scientific and Technical Information of China (English)

    华文

    2011-01-01

    红花紫荆(Bauhinia blakenna),又名洋紫荆或红花羊蹄甲,是苏木科卡蹄甲属常绿乔术.该树现广泛在热带和亚热带作为行道树种植,由于其花大色艳.外肜像一盛放的兰花.故英文称之为香港兰花树(Hong Kong Orchid Tree)早年经研究证实红花紫荆并非独立物种,而只是紫花羊蹄甲(Bauhiniapurpurea)和宫粉羊蹄甲(Bauhinia variegata)的天然杂交种.

  8. [Repellent and antifeedant effect of secondary metabolites of non-host plants on Plutella xylostella].

    Science.gov (United States)

    Wei, Hui; Hou, Youming; Yang, Guang; You, Minsheng

    2004-03-01

    Based on the theory of co-evolution between plants and phytophagous insects, the repellent and antifeedant effect of secondary metabolites of non-host plants on diamondback moth(DBM) Plutella xylostella was studied, aimed at finding out the oviposition repellents and antifeedants of insect pests. When the ethanol extracts(Etho Exts) of Bauhinia variegata, Eucalyptus tereticornis, Euphorbia hirta, Duranta repens, Zanthoxylum bungeanum, Magnolia grandiflora, and Nicotiana tabacum were applied respectively, the oviposition repellent rates were all over 80.00%; while after forty-eight hours treatment with the Etho Exts of Euphorbia pulcherrima, Broussonetia papyrifera, Artemisia argyi, Camellia oleifera, Salix babylonica, Euphorbia hirta, Bauhinia variegata, and Setaria viridisa, the antifeedant rates of DBM larvae were all more than 80.00%.

  9. Efficacy of Some Botanical Extracts against Trogoderma granarium in Wheat Grains with Toxicity Evaluation

    OpenAIRE

    2012-01-01

    In an attempt to find alternative control methods for stored products insects, extracts of seven plant species (Cassia senna, Caesalpinia gilliesii, Thespesia populnea var. acutiloba, Chrysanthemum frutescens, Euonymus japonicus, Bauhinia purpurea, and Cassia fistula) were evaluated under laboratory conditions for their ability to protect wheat (Triticum spp.) grains against Trogoderma granarium insect. Moreover, gas chromatography-mass spectrometry (GC-MS) analysis was carried to identify t...

  10. Underutilised legumes: potential sources for low-cost protein.

    Science.gov (United States)

    Prakash, D; Niranjan, A; Tewari, S K; Pushpangadan, P

    2001-07-01

    Seeds of 104 leguminous species belonging to 17 genera were analysed for their protein contents. The promising ones were investigated for fibre, carbohydrate, ash, oil, fatty acids, amino acid profile and trypsin inhibitor activity (TIA). The variation of fibre contents was 4.1-8.9%, carbohydrate 18.4-49.2%, ash 1.8-7.2%, TIA 48.7-87.5 mg/g, oil 1.3-19.8% and protein 11.0-51.6%. The protein content (41-45%) in Acacia mellifera (41.6%), Albizzia lebbek (43.6%), Bauhinia triandra (42.7%), Lathyrus odoratus (42.8%), Parkinsonia aculeata (41.6%), Psophocarpus tetragonolobus (41.9%), Sesbania paludosa (41.2%) and S. sesban (43.8%) was in close proximity to soybean (42.8%), whereas Bauhinia retusa (51.6%), B. variegata (46.5%), Delonix elata (48.7%) and Gliricidia maculata (46.3%) showed higher percentages of protein than soybean. The essential amino acid composition of some of the seed proteins was reasonably well balanced (lysine up to 7.6%). The seeds of Bauhinia retusa (18.6%), B. triandra (16.5%), B. variegata (17.3%), Gliricidia maculata (16.2%), Parkia biglandulosa (18.9%) and Psophocarpus tetragonolobus (19.8%) had a good amount of oil, comparable to soybean (18-22%). The fatty acid composition of some genera/species was quite promising with high amount of unsaturated fatty acids.

  11. Los coches aprenden a conducir

    OpenAIRE

    Menéndez Velázquez, Amador

    2011-01-01

    El MIT ha desarrollado un vehículo inteligente, capaz de circular sin conducir. Realizar diferentes tareas en beneficio de la humanidad y de un desarrollo sostenible del planeta es el objetivo de la investigación aplicada.

  12. Implementación de un Motor de Inteligencia Artificial para un Videojuego de Fútbol

    OpenAIRE

    Hernandez Pacheco, Joan-Ramon

    2012-01-01

    Castellà: El proyecto tiene como objetivo implementar un motor de inteligencia artificial para un videojuego de fútbol capaz de gestionar la inteligencia artificial de los futbolistas de ambos equipos.

  13. Grandes naves

    Directory of Open Access Journals (Sweden)

    Hidalgo Fernández-Cano, Amalio

    1960-01-01

    Full Text Available Las instalaciones de laminación correspondientes a la primera etapa son las siguientes: un gran tren desbastador, capaz de laminar hasta 1.000.000 de toneladas de lingote de acero para producir desbastes destinados a la fabricación de perfiles, carriles y productos planos; un tren estructural de tres cajas, dúo reversible, con capacidad de producción de 310.000 toneladas de productos laminados; un tren de chapa gruesa, capaz de producir hasta 600.000 toneladas de diversos espesores; un tren reversible para la laminación de banda caliente, capaz para 550.000 toneladas de diversos espesores; un tren continuo de tres cajas para laminar banda en frío, capaz de producir 300.000 toneladas anuales.

  14. Isolamento de glicoproteínas através de cromatografia de afinidade em colunas contendo lectinas imobilizadas

    OpenAIRE

    Gomes dos Santos Filho, Teodomiro

    2001-01-01

    A lectina de folha de Bauhinia monandra (BmoLL) e as isolectinas de sementes de Cratylia mollis (Cra Iso 1,2,3), isoladas no Laboratório de Glicoproteínas da UFPE, foram imobilizadas em álcool polivinílico-glutaraldeído (PVA-glutaraldeído) e Sepharose-4B, respectivamente. Os suportes Cra Iso 1,2,3-Sepharose, SpiL-Sepharose (lectina de semente de Swartzia pickellii imobilizada em Sepharose-4B) e BmoLL-PVA-glutaraldeído foram avaliados quanto à eficiência de ligação de ovoalbu...

  15. Action of plant proteinase inhibitors on enzymes of physiopathological importance.

    Science.gov (United States)

    Oliva, Maria Luiza V; Sampaio, Misako U

    2009-09-01

    Obtained from leguminous seeds, various plant proteins inhibit animal proteinases, including human, and can be considered for the development of compounds with biological activity. Inhibitors from the Bowman-Birk and plant Kunitz-type family have been characterized by proteinase specificity, primary structure and reactive site. Our group mostly studies the genus Bauhinia, mainly the species bauhinioides, rufa, ungulata and variegata. In some species, more than one inhibitor was characterized, exhibiting different properties. Although proteins from this group share high structural similarity, they present differences in proteinase inhibition, explored in studies using diverse biological models.

  16. Screening of some traditionally used medicinal plants for potential antibacterial activity

    Directory of Open Access Journals (Sweden)

    Parekh Jigna

    2006-01-01

    Full Text Available In the present work an attempt has been made to carry out screening for the preliminary antibacterial activity of different plants used in Indian folk medicine. The aim of the study was to select an active plant extract which may be useful in developing new lead compounds to combat deadly diseases. Twelve plants were selected for preliminary screening for their antibacterial potentiality, viz., Abutilon indicum L., Acorous calamus L., Ammania baccifera L., Argyrea nervosa Burm. F., Bauhinia variegata L., Crataeva religiosa Forst., Hedychium spicatum L., Holarrhena antidysenterica L., Piper nigrum L., Plumbago zeylanica L., Psoralea corylifolia L., Saussurea lappa Costus. The antibacterial activity was done by both agar disc diffusion method and agar well diffusion method against five bacterial strains, viz., Bacillus cereus, Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, Pseudomonas pseudoalcaligenes . The plant material was extracted with distilled water (aqueous and methanol. The preliminary screening experiment revealed that methanol extracts were more potent than the aqueous extracts. The plant extracts were more active against gram-positive bacteria than gram-negative bacteria. The most susceptible bacteria were K. pneumoniae and the most resistant bacteria were E. coli . Bauhinia variegata L. exhibited remarkable antibacterial activity.

  17. A comparison of the human buccal cell assay and the pollen abortion assay in assessing genotoxicity in an urban-rural gradient.

    Science.gov (United States)

    Fleck, Alan da Silveira; Vieira, Mariana; Amantéa, Sergio Luís; Rhoden, Claudia Ramos

    2014-08-27

    Air pollution is exacerbated near heavy traffic roads in cities. Air pollution concentration and composition vary by region and depend on urban-rural gradients. The aim of this study was to evaluate the distribution of air pollution in areas of varying population densities and to compare plant biomonitoring with an established biomarker of human exposure to traffic-related air pollution in children. The areas of study were selected near a major street in 3 different regions. Areas A, B and C represent high, intermediate and low population densities, respectively. Micronucleus assay, an established biomarker of human exposure, was performed in children from these areas. For a plant biomonitoring assay, the pollen abortion assay was performed on Bauhinia variegata in these areas. NO2 and O3 concentrations were determined by passive sampling. We report here that the pollen abortion frequency in Bauhinia variegata is correlated with NO2 concentration (P = 0.004) and is strongly associated with vehicular flow and population density in the studied areas. Micronuclei frequency in buccal cells of children was higher in the regions with more degree of urbanization (P < 0.001) following the same pattern of O3 concentrations (P = 0.030). In conclusion, our results demonstrate that high concentrations of air pollutants in Porto Alegre are related to both human and plant genotoxicity. Areas with different concentration of pollutants demonstrated to have an urbanization gradient dependent pattern which also reflected on genotoxic damage among these areas.

  18. A Comparison of the Human Buccal Cell Assay and the Pollen Abortion Assay in Assessing Genotoxicity in an Urban-Rural Gradient

    Directory of Open Access Journals (Sweden)

    Alan da Silveira Fleck

    2014-08-01

    Full Text Available Air pollution is exacerbated near heavy traffic roads in cities. Air pollution concentration and composition vary by region and depend on urban-rural gradients. The aim of this study was to evaluate the distribution of air pollution in areas of varying population densities and to compare plant biomonitoring with an established biomarker of human exposure to traffic-related air pollution in children. The areas of study were selected near a major street in 3 different regions. Areas A, B and C represent high, intermediate and low population densities, respectively. Micronucleus assay, an established biomarker of human exposure, was performed in children from these areas. For a plant biomonitoring assay, the pollen abortion assay was performed on Bauhinia variegata in these areas. NO2 and O3 concentrations were determined by passive sampling. We report here that the pollen abortion frequency in Bauhinia variegata is correlated with NO2 concentration (P = 0.004 and is strongly associated with vehicular flow and population density in the studied areas. Micronuclei frequency in buccal cells of children was higher in the regions with more degree of urbanization (P < 0.001 following the same pattern of O3 concentrations (P = 0.030. In conclusion, our results demonstrate that high concentrations of air pollutants in Porto Alegre are related to both human and plant genotoxicity. Areas with different concentration of pollutants demonstrated to have an urbanization gradient dependent pattern which also reflected on genotoxic damage among these areas.

  19. A liquid chromatography-atmospheric pressure photoionization tandem mass spectrometric (LC-APPI-MS/MS) method for the determination of triterpenoids in medicinal plant extracts.

    Science.gov (United States)

    Gobo, Luciana Assis; Viana, Carine; Lameira, Osmar Alves; de Carvalho, Leandro Machado

    2016-08-01

    An analytical method using liquid chromatography-atmospheric pressure photoionization tandem mass spectrometry with toluene as a dopant was developed for the determination of triterpenes in medicinal plant extracts. The 12 compounds determined have been shown to exhibit biological activity, such as gastroprotective, hepatoprotective, anti-inflammatory, antiviral and anti-tumor effects. The parameters of the atmospheric pressure photoionization interface were optimized to obtain the highest possible sensitivity for all of the compounds. The limits of detection and quantification ranged from 0.4 to 157.9 µg l(-1) and 1.3 to 526.4 µg l(-1) , respectively. The method was validated and applied to extracts of five medicinal plants species (Mansoa alliacea (Lam.) A.H.Gentry, Bauhinia variegata var variegata, Bauhinia variegata var alboflava, Cecropia obtuse Trécul and Cecropia palmate Willd) from the Amazonian region. The concentrations of the six triterpenes quantified in the samples ranged from 0.424 mg kg(-1) for ursolic acid to 371.96 mg kg(-1) for β-amyrin, which were quantified by using the standard addition method (n = 3). Copyright © 2016 John Wiley & Sons, Ltd.

  20. Action of plant proteinase inhibitors on enzymes of physiopathological importance

    Directory of Open Access Journals (Sweden)

    Maria Luiza V. Oliva

    2009-09-01

    Full Text Available Obtained from leguminous seeds, various plant proteins inhibit animal proteinases, including human, and can be considered for the development of compounds with biological activity. Inhibitors from the Bowman-Birk and plant Kunitz-type family have been characterized by proteinase specificity, primary structure and reactive site. Our group mostly studies the genus Bauhinia, mainly the species bauhinioides, rufa, ungulata and variegata. In some species, more than one inhibitor was characterized, exhibiting different properties. Although proteins from this group share high structural similarity, they present differences in proteinase inhibition, explored in studies using diverse biological models.Obtidas de sementes leguminosas, várias proteínas inibem proteinases de origem animal, incluindo humanas, e podem ser consideradas para o desenvolvimento de compostos com atividade biológica. Inibidores da família Bowman-Birk e da família Kunitz vegetal tem sido caracterizados em relação a especificidade para proteinase, estrutura primária e sitio reativo. O nosso grupo majoritariamente vem estudando o gênero Bauhinia, principalmente as espécies bauhinioides, rufa, ungulatae variegata. Em algumas espécies, mais de um inibidor com propriedades diferentes foi caracterizado. Embora tais proteínas apresentem alta similaridade estrutural, diferem quanto à inibição de proteinases, e foram exploradas em estudos utilizando diversos modelos biológicos.

  1. Medicinal and ethnoveterinary remedies of hunters in Trinidad

    Directory of Open Access Journals (Sweden)

    Georges Karla

    2001-11-01

    Full Text Available Abstract Background Ethnomedicines are used by hunters for themselves and their hunting dogs in Trinidad. Plants are used for snakebites, scorpion stings, for injuries and mange of dogs and to facilitate hunting success. Results Plants used include Piper hispidum, Pithecelobium unguis-cati, Bauhinia excisa, Bauhinia cumanensis, Cecropia peltata, Aframomum melegueta, Aristolochia rugosa, Aristolochia trilobata, Jatropha curcas, Jatropha gossypifolia, Nicotiana tabacum, Vernonia scorpioides, Petiveria alliacea, Renealmia alpinia, Justicia secunda, Phyllanthus urinaria,Phyllanthus niruri,Momordica charantia, Xiphidium caeruleum, Ottonia ovata, Lepianthes peltata, Capsicum frutescens, Costus scaber, Dendropanax arboreus, Siparuma guianensis, Syngonium podophyllum, Monstera dubia, Solanum species, Eclipta prostrata, Spiranthes acaulis, Croton gossypifolius, Barleria lupulina, Cola nitida, Acrocomia ierensis (tentative ID. Conclusion Plant use is based on odour, and plant morphological characteristics and is embedded in a complex cultural context based on indigenous Amerindian beliefs. It is suggested that the medicinal plants exerted a physiological action on the hunter or his dog. Some of the plants mentioned contain chemicals that may explain the ethnomedicinal and ethnoveterinary use. For instance some of the plants influence the immune system or are effective against internal and external parasites. Plant baths may contribute to the health and well being of the hunting dogs.

  2. A Comparison of the Human Buccal Cell Assay and the Pollen Abortion Assay in Assessing Genotoxicity in an Urban-Rural Gradient

    Science.gov (United States)

    Fleck, Alan da Silveira; Vieira, Mariana; Amantéa, Sergio Luís; Rhoden, Claudia Ramos

    2014-01-01

    Air pollution is exacerbated near heavy traffic roads in cities. Air pollution concentration and composition vary by region and depend on urban-rural gradients. The aim of this study was to evaluate the distribution of air pollution in areas of varying population densities and to compare plant biomonitoring with an established biomarker of human exposure to traffic-related air pollution in children. The areas of study were selected near a major street in 3 different regions. Areas A, B and C represent high, intermediate and low population densities, respectively. Micronucleus assay, an established biomarker of human exposure, was performed in children from these areas. For a plant biomonitoring assay, the pollen abortion assay was performed on Bauhinia variegata in these areas. NO2 and O3 concentrations were determined by passive sampling. We report here that the pollen abortion frequency in Bauhinia variegata is correlated with NO2 concentration (P = 0.004) and is strongly associated with vehicular flow and population density in the studied areas. Micronuclei frequency in buccal cells of children was higher in the regions with more degree of urbanization (P < 0.001) following the same pattern of O3 concentrations (P = 0.030). In conclusion, our results demonstrate that high concentrations of air pollutants in Porto Alegre are related to both human and plant genotoxicity. Areas with different concentration of pollutants demonstrated to have an urbanization gradient dependent pattern which also reflected on genotoxic damage among these areas. PMID:25166920

  3. Análisis de la violencia como problemática social contemporánea : Sobre el valor de la palabra en la óptica de Hannah Arendt

    OpenAIRE

    Patierno, Nicolás

    2016-01-01

    La violencia entendida como problemática social excede lo efímero de un hecho singular; lejos de tratarse de acontecimientos aislados, Arendt advierte sobre la violencia como un instrumento avasallador incluso capaz de derrocar al poder. Al asociar la violencia con las políticas estatales y con la dominación de las masas a partir de comienzos del siglo XX, occidente llegó a observar que su institucionalización, asociada a un discurso propagandista y racial, fue capaz de aniquilar sistemáticam...

  4. Análisis de la violencia como problemática social contemporánea. Sobre el valor de la palabra en la óptica de Hannah Arendt

    OpenAIRE

    Eva María Palumbo

    2016-01-01

    La violencia entendida como problemática social excede lo efímero de un hecho singular; lejos de tratarse de acontecimientos aislados, Arendt advierte sobre la violencia como un instrumento avasallador incluso capaz de derrocar al poder. Al asociar la violencia con las políticas estatales y con la dominación de las masas a partir de comienzos del siglo XX, occidente llegó a observar que su institucionalización, asociada a un discurso propagandista y racial, fue capaz de aniquilar sistemáticam...

  5. Análisis y aplicación de un escáner 3D en el ámbito médico-estético

    OpenAIRE

    Martín Barrio, Nuria

    2016-01-01

    El escaneado tridimensional es una forma de medición que analiza un objeto o escena para reunir datos de su forma y de su color. Su funcionamiento es parecido al de las cámaras fotográficas comunes, con un dispositivo añadido capaz de conocer la profundidad de un punto al escáner. Una vez tomados los datos, es capaz construir el modelo tridimensional de forma sencilla y rápida. Esta técnica está ampliamente implantada en la actualidad en sectores industriales, como los palpadores que se ut...

  6. Atividade citotóxica de fungos endofíticos associados à Clusia arrudae Planchon & Triana (Clusiaceae).

    OpenAIRE

    Silva Filho, Antonio Cesar Corrêa

    2012-01-01

    Os fungos são organismos capazes de sobreviver isoladamente ou em relações simbióticas com outros organismos. Nos tecidos vegetais os fungos colonizam espaços intracelulares de plantas sem causar dano aparente ao seu hospedeiro, os quais são chamados de endofíticos e por colonizar estes espaços e apresentar constante interação com seu hospedeiro, estes fungos são capazes de produzir diferentes metabólitos bioativos. O câncer, ainda hoje, é uma doença que acomete milhares de pessoas ao redor d...

  7. Modeling peristaltic micropump with electro-mechanical analogies

    OpenAIRE

    Alexey Marques Espindola

    2006-01-01

    Resumo: Os sistemas microfluidicos estão evoluindo rapidamente, encontrando vastas aplicações na mais diversas áreas do conhecimento. Os Lab-on-Chips, LOCs, são dispositivos capazes de realizar análises químicas e bioquímicas em um único chip. Este dispositivo pode causar grande impacto no mercado de análises laboratoriais, por este motivo vem ganhando grande atenção Para realizar estas análises os LOCs necessitam de microbombas capazes de transportar quantidades ínfimas de fluidos em seus ca...

  8. Coligações em eleições majoritárias municipais: a lógica do alinhamento dos partidos políticos brasileiros nas disputas de 2000 e 2004

    OpenAIRE

    Humberto Dantas de Mizuca

    2007-01-01

    A Ciência Política no Brasil tem se preocupado, nos últimos anos, em compreender o comportamento dos partidos surgidos após o período de redemocratização. Dentre as possíveis variáveis capazes de servir para explicar o fenômeno estão as coligações eleitorais, ainda pouco exploradas nos estudos. O objetivo dessa tese é compreender a existência de uma lógica capaz de explicar o comportamento das legendas em seus acordos para a disputa de prefeituras em 2000 e 2004. O universo pesquisado compree...

  9. Métodos de análise da severidade da patologia da marcha humana

    OpenAIRE

    Vieira, Alexandra Sofia Domingues

    2015-01-01

    A marcha humana é composta por um conjunto de movimentos complexos que dificultam a sua análise e o reconhecimento de padrões de marcha normais ou patológicos. O presente relatório descreve o projeto desenvolvido com o objetivo de apresentar dois métodos, capazes de avaliar a severidade da patologia de marcha e auxiliar a análise médica: análise cinética e análise cinemática. Na primeira fase do projeto foi escrita e submetida uma patente que descreve um sapato instrumentado, capaz de real...

  10. Evaluation of the effectiveness of saneantes front the isolated bacteria acid-termorresistentes of the orange juice processing.

    OpenAIRE

    Maria Inacia S. Stach Farah

    2004-01-01

    Resumo: As bactérias do gênero alicyclobacillus, organismos esporulados ácidofílico-termofílicos com elevada termoresistência (Acidothermophilic sporulating bactéria-ATSB), são capazes de sobreviver ao processo usual de pasteurização do suco de laranja e de crescer em sucos reconstituídos, sendo uma preocupação constante das indústrias de sucos concentrados ao redor do mundo. Com o intuito de estudar sanitizantes compatíveis com a utilização na indústria de alimentos, capazes de reduzir ou el...

  11. O EFEITO DA FISIOTERAPIA PRECOCE SOBRE AS HABILIDADES MOTORAS NA SÍNDROME DE JOUBERT: RELATO DE CASO

    OpenAIRE

    FREITAS, T.C.B.; SOARES, E.V.; VERISSIMO, C.G.S.; MONTEIRO, H.S.P.

    2015-01-01

    A Síndrome de Joubert é uma doença congênita rara com prevalência de 1 em 100.000 casos, caracterizada por hipoplasia do vérmis cerebelar, resultando em má formação do tronco cerebral. Clinicamente, os pacientes apresentam principalmente atraso no desenvolvimento motor, ataxia, hipotonia e apraxia oculomotora. Com a fisioterapia precoce, o paciente é capaz de restabelecer habilidades motoras sendo capaz de realizar tarefas de forma mais independente possível. Verificar os efeitos ...

  12. El estudio por circuitos magnéticos equivalentes de un motor lineal de flujo mixto

    OpenAIRE

    Alonso Macías, Álvaro

    2012-01-01

    Este proyecto realiza un programa informático que es capaz de: · Realizar un estudio del flujo en una máquina eléctrica lineal utilizando el método de circuitos magnéticos equivalentes (MEC). · Realizar un estudio de las fuerzas obtenidas en la misma máquina mediante la Ley de Lorentz. El método con el que se ha realizado el programa ha sido tal que en principio, el programa es capaz de resolver cualquier tipo de máquina eléctrica lineal. ______________________________________________________...

  13. Análise das propriedades biológicas de um monômero antimicrobiano para aplicação em prótese dentária

    OpenAIRE

    Romulo Rocha Regis

    2010-01-01

    A resina acrílica para base de próteses removíveis é capaz de acumular biofilme e assim favorecer o aparecimento de diversos problemas na cavidade bucal dos usuários de próteses. A imobilização de um agente antisséptico na matriz polimérica tem potencial preventivo frente a esse acúmulo, mas necessita de maior investigação. O objetivo deste estudo foi avaliar as propriedades biológicas do brometo de metacriloiloxiundecilpiridínio (MUPB), um composto antisséptico capaz de copolimerizar-se com ...

  14. Desenvolvimento de ensaio de elisa indireto para detecção especifica de Igg anti-toxocara em cães

    OpenAIRE

    Virgens, Carlos Jose Santos

    2015-01-01

    Diversos são os parasitos intestinais capazes de acometer cães e gatos, e destacam-se aqueles capazes de causar impacto na saúde pública por tratar-se de zoonoses. Dentre eles, o Toxocara canis e o Toxocara cati, agentes causadores das toxocaríases canina e felina respectivamente que são responsáveis pelas síndromes larva migrans visceral e ocular do homem. Os animais domésticos integram o ciclo evolutivo como hospedeiros definitivos criando focos de transmissão em ambientes comuns ao lazer h...

  15. Antiviral activities of medicinal plants of southern Nepal.

    Science.gov (United States)

    Taylor, R S; Hudson, J B; Manandhar, N P; Towers, G H

    1996-08-01

    In a screening of plants used traditionally in Nepal to treat diseases that could be caused by viruses, twenty-one methanol extracts from twenty species were quantitatively assayed for activity against three mammalian viruses: herpes simplex virus, Sindbis virus and poliovirus. Assays were performed in ultraviolet (UV)-A or visible light, as well as dark, and cytotoxicity was also noted. Impressive antiviral activities were exhibited by species of Bauhinia (Fabaceae), Carissa (Apocynaceae), Milletia (Fabaceae), Mallotus (Fabaceae), Rumex (Polygonaceae), Streblus (Moraceae), Terminalia (Combretaceae) and Tridax (Asteraceae). The Carissa extract was the most active, showing activity against all three viruses at a concentration of 12 micrograms/ml. Many of the other extracts showed partial inactivation of one or more test viruses.

  16. Etnoconhecimentos de Espécies Forrageiras no Semi-árido da Paraíba, Brasil

    Directory of Open Access Journals (Sweden)

    Patrícia Carneiro Souto

    2010-10-01

    Full Text Available The Caatinga, bioma with restricted occurrence to Brazil, is characterized by a xerophilous vegetation, with herb, shrub and tree components and high species diversity. The objective of this work was to study with participative forage species of the caatinga and establish a order of importance of the species as forage value at different altidudes. The collection of data was done through the use of questionnaires with rural workers of two ecoregion in Santa Luzia, Paraíba State: Borborema plateau and “sertaneja” Depression setentrional. The altitude affected the crude protein content of Mimosa tenuiflora (Willd Poiret (jurema preta, Cnidoscollus phyllacanthus Muel. Arg. Pax et. K. Hoffm. (faveleira, Caesalpinia pyramidalis Tul. (catingueira, Capparis flexuosa L. (feijão bravo and Bauhinia cheilantha Bong. (mororó forage, was higher than the minimum demanded by ruminants in the dormant period.

  17. Effect of artificial acid rain and SO2 on characteristics of delayed light emission.

    Science.gov (United States)

    Wang, Chenglong; Xing, Da; Zeng, Lizhang; Ding, Chunfeng; Chen, Qun

    2005-01-01

    The structure and function of chloroplast in plant leaves can be affected by acid rain and air pollution. The photosystem II in a plant is considered the primary site where light-induced delayed light emission (DLE) is produced. With the lamina of zijinghua (Bauhinia variegata L.) and soybean (Glycine max (L.) Merr.) as testing models, we studied the effects of artificial acid rain and SO2 on characteristics of DLE by using a home-made weak luminescence detection system. The results show that the changes in DLE intensity of green plants can reflect the changes in chloroplast intactness and function. With proper calibration, DLE may provide an alternative means of evaluating environmental acid stress on plants. The changes in DLE intensity may provide a new approach for the detection of environmental pollution and its impact on the ecosystem.

  18. 樱花之艳——洋紫荆

    Institute of Scientific and Technical Information of China (English)

    徐晔春

    2013-01-01

    洋紫荆(Bauhinia variegata)又名宫粉羊蹄甲、红紫荆,为豆科羊蹄甲属落叶乔木;叶近革质,基部浅至深心形,先端2裂达叶长的1/3,总状花序侧生或顶生,花大,紫红色或淡红色,杂以黄绿色及暗紫色的斑纹。花期春季,以3月最盛。产我国南部,印度、中南半岛也有分布。

  19. Preliminary phytochemical screening of four common plants of family caesalpiniaceae.

    Science.gov (United States)

    Rasul, N; Saleem, B; Nawaz, R

    1989-01-01

    Preliminary phytochemical screening of Bauhinia variegata, Cassia fistula, Cassia tora and Tamarindus indica did not reveal alkaloids and unbound anthraquinones while glycosides as well as flavonoids were present in all the four species of the family caesalpiniaceae. Cardiac glycosides were absent only in C. tora and saponins were present only in T. indica, B. variegata and T. indica were devoid of bound anthraquinones while bound anthraquinones were present in C. fistula and C. tora. Paper chromatography revealed 6 spots in solvent system I, and 5 spots in solvent system 2, showing different Rf values. The per cent yield of crude glycosides was 3.18 in B. variegata, 4.03 in C. fistula, 4.45 in C. tora and 4.14 in T. indica.

  20. Detección y caracterización preliminar de lectinas presentes en semillas de leguminosas

    Directory of Open Access Journals (Sweden)

    Yolanda de Navarro

    2009-07-01

    Full Text Available La aglutinación de eritrocitos humanos o animales fue ensayada con 23 especies de leguminosas. Las semillas de Bauhinia picta, marindus indica, Dioclea lehmannii y Erythrina rubrinervia poseen lectinas inespecíficas para el sistema ABO; Crotalaria agatifolia, C. spp, Cassia indecora y Ormosia spp, presentan cierto grado de especificidad. Se ensayaron eritrocitos de seis especies animales, observándose aglutinación con las especies ya citadas y además con Cassia fruticosa, C. reticulata, Delonix regia, Poinciana pulquerrima, Abrus fruticulosus y Mucuna mutisiana. Los ensayos de inhibición con carbohidratos indican que las lectinas de Dioclea lehmannii y Erythrina rubrinervia actúan sobre receptores diferentes.

  1. LC/ESI-MS method applied to characterization of flavonoids glycosides in B. forficata subsp. pruinosa

    Directory of Open Access Journals (Sweden)

    Lidiane da Silveira Farias

    2014-06-01

    Full Text Available Bauhinia forficata is used in folk medicine for its hypoglycemiant effect. In the south of Brazil, the subspecies pruinosa is found in a region with the characteristic flora, pampa biome. This species has been consumed by the local population as a tea for diabetes treatment. We studied the chemical composition of hydroethanolic extracts using LC/ESI-MS. The leaf extracts were prepared by percolation with 50% (v/v ethanol. The chromatographic analyses were performed using a reverse-phase system, gradient elution with acetonitrile:phosphoric acid 0.05%, and ESI-MS in the positive ion mode. The chemical profile of the flavonoids was suggested to involve four quercetin and kaempferol glycosides.

  2. Effet structurant de la plante hôte chez la bruche de l'arachide, Caryedon serratus (Olivier, 1790 (Coleoptera : Bruchidae

    Directory of Open Access Journals (Sweden)

    Sembène, M.

    2012-01-01

    Full Text Available Structuring effect of the host plant in the groundnut bruchid, Caryedon serratus (Olivier, 1790 (Coleoptera: Bruchidae. Twenty-six samples of the groundnut seed-beetle which were reared from pods of five different host plants (Arachis hypogaea L., Bauhinia rufescens Lam., Cassia sieberiana DC., Piliostigma reticulatum (DC. Hochst. and Tamarindus indica L. in four localities of Senegal were compared using electrophoresis based on six loci of four enzymatic systems. The population structure of Caryedon serratus Olivier was analysed using Weir and Cockerham's estimator of Wright's F-statistics. θ value (0.235 and the dendrogram of Rogers'genetic distances revealed a high degree of genetic differentiation between host plants. Genetic analysis without C. sieberiana samples indicated that populations form host races which are partially isolated according to their host plants (θ = 0.035. Geographical distances between localities are not decisive for genetic structuration of C. serratus populations from a given host plant.

  3. 高空压条法培育大苗试验简报%Preliminary Experimental Report on Cultivating Big Seedlings with Overhead Marcottage

    Institute of Scientific and Technical Information of China (English)

    吴建福

    2005-01-01

    1材料方法 1.1来源与选择 材料选自校内的园林树木和苗木。选择有一定经济价值,并有营养繁殖育苗成功经验、主干不明显、分枝低或主干基部易萌条且生长快的6个树种:罗汉松(Podocarpus macrophyllus)、柏木(Cupressus funebris)、榕树(Ficus microcarpa)、白兰花(Michalia alba)、桂花(Osmanthus fragrans)、羊蹄(Bauhinia purpurea),枝条直径4~20cm无病虫和伤害;切除不影响母树观赏价值的枝干。

  4. A Review of Traditional Medicinal Plants from Kachin State, Northern Myanmar.

    Science.gov (United States)

    Aung, Hain Thanda; Sein, Myint Myint; Aye, Mya Mu; Thu, Zaw Min

    2016-03-01

    Medicinal plants are a vital source of medication in developing countries. In Kachin State, Northern Myanmar, the people have a long history of the use of traditional plants for medicinal purposes. This article deals with the 25 most used medicinal plants in Kachin State. They are: Drynariafortunei, Tetrastigma serrulatum, Bauhinia championii, Goniothalamus cheliensis, Juglans regia, Houttuynia cordata, Osmanthus fragrans, Pothos chinensis, Tabemaemontana coronaria, Eryngiumfoetidum, Chloranthus spicatus, Peperomia pellucida, Zanthoxylum armatum, Polygonumfagopyrum, Cymbidiumfloribundum, Amomum kravanh, Coscinium fenestratum, Solanum nigrum, Gnetum parvifolium, Desmodium triquetum, Begonia augustinec, Mappianthus iodoides, Erycibe obtusifolia, Schefflera venulosa, Holarrhena antidysenterica. The different traditional applications, the known chemical constituents and medicinal properties are reported for each plant. The efficacy of several of these plants has been supported by some scientific evidence, while other plants have to be submitted to further investigations to prove the beneficial medicinal properties attributed to them.

  5. Rhizosphere soil microbial index of tree species in a coal mining ecosystem

    Energy Technology Data Exchange (ETDEWEB)

    Sinha, S.; Masto, R.E.; Ram, L.C.; Selvi, V.A.; Srivastava, N.K.; Tripathi, R.C.; George, J. [Central Institute of Mining & Fuel Research, Dhanbad (India)

    2009-09-15

    Microbial characterization of the tree rhizosphere provides important information relating to the screening of tree species for re-vegetation of degraded land. Rhizosphere soil samples collected from a few predominant tree species growing in the coal mining ecosystem of Dhanbad, India, were analyzed for soil organic carbon (SOC), mineralizable N, microbial biomass carbon (MBC), active microbial biomass carbon (AMBC), basal soil respiration (BSR), and soil enzyme activities (dehydrogenase, urease, catalase, phenol oxidase, and peroxidase). Principal component analysis was employed to derive a rhizosphere soil microbial index (RSMI) and accordingly, dehydrogenase, BSR/MBC, MBC/SOC, EC, phenol oxidase and AMBC were found to be the most critical properties. The observed values for the above properties were converted into a unitless score (0-1.00) and the scores were integrated into RSMI. The tree species could be arranged in decreasing order of the RSMI as: A. marmelos (0.718), A. indica (0.715), Bauhinia bauhinia (0.693), B. monosperma (0.611), E. jambolana (0.601), Moringa oleifera (0.565), Dalbergia sissoo (0.498), T indica (0.488), Morus alba (0.415), F religiosa (0.291), Eucalyptus sp. (0.232) and T grandis (0.181). It was concluded that tree species in coal mining areas had diverse effects on their respective rhizosphere microbial processes, which could directly or indirectly determine the survival and performance of the planted tree species in degraded coal mining areas. Tree species with higher RSMI values could be recommended for re-vegetation of degraded coal mining area.

  6. Assessment of air pollution tolerance index of some trees in Moradabad city, India.

    Science.gov (United States)

    Tripathi, Anamika; Tiwari, P B; Mahima; Singh, Dharmveer

    2009-07-01

    To see the relative tolerance of the plant species, ten different plant species i.e. Ficus rumphii, Pongamia pinnata, Alstonia scholaris, Holoptelea integrifolia, Saraca indica, Pithecolobium dulcis, Cassia simea, Bauhinia variegata, Azadirachta indica and Grewelia robusta was taken from residential (SI), industrial (SII) and commercial (SIII) area of the city as this florais very much common to the Brass city and is planted on the roadside. The quality of air with respect to SPM, SO2 and NO2 has been also assessed on respective sites to see its effect on biochemical parameters of the leaves i.e. pH, total water content, chlorophyll and ascorbic acid and evaluate the (air pollution tolerance index (APTI) of various plants. It was concluded that Pongamia pinnata 15.8, Pithecolobium dulcis 34.8, Holoptelea integrifolia 55.8 and Saraca indica 52.0 have very high APTI value over control so these are considered as high tolerant tree species, Ficus rumphii 35.7, Azadirachta indica 30.5 and Grewelia robusta 34.3 have slightlymoreAPTI value over control so these are considered as moderately tolerant tree species and Alstonia scholaris 21.5, Cassia simea 6.09 and Bauhinia variegata 18.22 have lessAPTI value than control, so these are sensitive species respectively. One way ANOVA finds the obtained values to be highly significant (p < 0.001) at the industrial site. Thus present findings show that Brass and allied industries are the prominent sources responsible for the elevated level of air pollutants at the industrial site.

  7. Abogacía legal - ¿por la derecha? conservadores, ideología y activismo social

    OpenAIRE

    Hatcher, Laura J.

    2013-01-01

    El lenguaje de los derechos individuales tiempo atrás asociado a la izquierda y al discurso del progresismo, ahora puede ser adaptado en beneficio de quien sea capaz de usarlo. Este trabajo es un intento de teorizar acerca del activismo legal de la derecha en los Estados Unidos.

  8. Emprendimiento integra-l-global : Taller participativo emprendedor

    OpenAIRE

    Mercader, Víctor

    2014-01-01

    El objetivo del taller es descubrir y proyectar en el presente y futuro planes emprendedores de modo integral que nos potencien de modo profesional y personal a una vida más productiva y equilibrada, capaz de transformar nuestros sueños en factibles realidades.

  9. CÁLCULO DE DANO AMBIENTAL DECORRENTE DE UM DEPÓSITO DE LIXO: ESTUDO DE CASO

    Directory of Open Access Journals (Sweden)

    Josimar Ribeiro Almeida

    2014-07-01

    Full Text Available DOI: 10.12957/sustinere.2014.11803O presente trabalho teve como foco principal aplicar uma metodologia capaz de estimar o dano ambiental decorrente de atividades antrópicas. Neste artigo foi utilizado como modelo a instalação de um depósito de lixo.

  10. Resiliencia : definición, características y utilidad del concepto

    OpenAIRE

    Becoña Iglesias, Elisardo

    2006-01-01

    La resiliencia, o capacidad de superar los eventos adversos, y ser capaz de tener un desarrollo exitoso a pesar de circunstancias muy adversas (muerte de los padres, guerras, graves traumas, etc.), ha cobrado un gran interés en los últimos años y poco

  11. Fundamentos de Inteligencia Artificial. Práctica 3: Lógica difusa

    OpenAIRE

    2010-01-01

    En esta práctica se desarrollará el funcionamiento de un sistema experto difuso. El alumno debe desarrollar y probar un sistema experto, utilizando lógica difusa, que sea capaz de estabilizar un péndulo invertido.

  12. Efecto de la mutación del gen que codifica para la levansacarasa (isdA) de gluconacetobacter diazotrophicus sobre la colonización de la caña de azúcar

    OpenAIRE

    Velázquez Hernández, Ma. de Lourdes

    2011-01-01

    En la simbiosis Gluconacetobacter diazotrophicus-caña de azúcar, la bacteria es considerada promotara del crecimiento ya que es capaz de fijar N2 atmosférico en la planta, produce fitohormonas, solubiliza sales minerales y produce sustancias que inhiben el desarrollo de patógenos de la caña de azúcar.

  13. Clasificacion automática de cuadros

    OpenAIRE

    2011-01-01

    En este trabajo se recoge el proceso de extracción de las características de unas determinadas obras de arte de la época del clasicismo, impresionismo o cubismo, así como el desarrollo de un sistema capaz de clasificarlas según su movimiento artístico.

  14. Diseño de sistema de gestión de la comunicación interna a la medida organizacional

    Directory of Open Access Journals (Sweden)

    Norge Lauzao-Serrano

    2012-01-01

    evaluación y control de los procesos comunicativos en la organización, capaz de permitir la existencia de un sistema de comunicación coherente y armónico, contribuyendo a una mayor integración interna, fortaleciendo su cultura e identidad.

  15. Leer, ¿en silencio o en voz alta?

    OpenAIRE

    García, Luis Eduardo

    2015-01-01

    Los seres humanos más antiguos ya sabían leer y escribir antes de haber inventado esta tecnología, puesto que estaban dotados de un cerebro capaz de almacenar y descifrar incluso los signos lingüísticos todavía inexistentes.

  16. La estructura de vulnerabilidad y el escenario de un gran desastre

    Directory of Open Access Journals (Sweden)

    Ignacio Rubio Carriquiriborde

    2012-01-01

    demás actores. Se trata de un concepto que cobra especial relevancia en escenarios en los que un solo agente es capaz de controlar las variables fundamentales de la amenaza, como fue el caso del desastre que en 2007 involucró a un complejo sistema de presas en el sureste mexicano.

  17. La autoprotección de las personas con capacidad modificada

    OpenAIRE

    Meléndez Arias, María del Carmen

    2012-01-01

    Las posibilidades que el ordenamiento jurídico español ofrece al sujeto capaz de obrar o con capacidad suficiente, para organizar la protección de su persona y bienes en una situación futura de pérdida de facultades o de modificación de su capacidad.

  18. Picix: Un microkernel híbrido preemptivo/cooperativo

    OpenAIRE

    Ortega, Alfredo Adrián

    2003-01-01

    Se propone un sistema operativo capaz de funcionar en sistemas de bajos recursos, tales como los microcontroladores modernos. Se describen varios servicios y en especial su scheduler híbrido, que puede ser utilizado tanto en modo preemptivo como cooperativo. Se presenta una implementación en lenguaje C para la línea de microcontroladores PIC- 18 de Microchip.

  19. Homossexualidades e Construção de Mecanismos de Proteção Social

    OpenAIRE

    Colaço Rodrigues, Rita de Cássia; Hora Góis, João Bôsco

    2014-01-01

    Neste trabalho, utilizando exemplos significativos, buscamos mostrar como, apesar de submetidos a recorrentes situações de violência, os homossexuais têm sido capazes de construir importantes mecanismos de proteção social que operam em micro, meso e macro escala.

  20. Las emociones en el niño autista a través del cómic estudio de caso

    OpenAIRE

    Flores Díaz, Rafael

    2007-01-01

    Nuestro estudio tiene la finalidad de conocer si el cómic puede llegar a ser un medio útil para romper los silencios emocionales de los niños autistas, un medio capaz de ayudar a exteriorizar a través de las viñetas, emociones y sentimientos que no son ca

  1. Combustión turbulenta de materia nuclear en materia extraña

    Science.gov (United States)

    Vucetich, H.

    La simulación numérica de supernovas tipo II muestra que los mecanismos físicos convencionales no son suficientes como para producir la explosión. La detonación de materia nuclear en materia extraña es un mecanismo físico capaz de proveer la energía faltante en las simulaciones. En esta comunicación se muestra que la turbulencia en el corazón compacto de una supernova, después del primer choque, es capaz de transformar una combustión lenta en una detonación. Se concluye que, si la materia extraña existe, todas las ``estrellas de neutrones'' son, en realidad, ``estrellas extrañas''.

  2. La mente mecánica

    OpenAIRE

    Suay Belenguer, Juan Miguel

    2012-01-01

    La mente humana es capaz de razonar, de manera similar que lo haría un ordenador, sobre cuestiones que son formuladas algorítmicamente, pero tam¬bién es capaz de realizar otras funciones que algunos autores consideran que son imposibles de simular por una máquina. Los diferentes respuestas a cómo fun-ciona la mente han sido abordadas por la filosofía de la mente, la lógica, la psico-logía y la neurología, incluso hoy en día por la mecánica cuántica. En este trabajo intentaré realizar un compe...

  3. Estudo do eletrocardiograma sob uma abordagem matemática.

    OpenAIRE

    2006-01-01

    O eletrocardiograma transMITe informações com relação à passagem do pulso elétrico pelo coração e, conseqüentemente, do funcionamento deste. Desde o início da sua utilização, possibilitada pelo trabalho de Willem Einthoven criando a primeira máquina capaz de medir o pulso elétrico de forma não invasiva e com sensibilidade forte o bastante para ser capaz de produzir um gráfico proveitoso, o eletrocardiograma é muito utilizado para avaliação clínica de pacientes. Entretanto a evolução das máqui...

  4. Análise funcional e estrutura do sistema de secreção do tipo III Herbaspirullum rubrisubalbicans M1

    OpenAIRE

    Schmidt, Maria Augusta

    2013-01-01

    Resumo: O Herbaspirillum rubrisubalbicans é uma bactéria diazotrófica e endofítica pertencente a classe ? das proteobacterias que é capaz de se associar com várias Poaceae de interesse econômico como milho, arroz, sorgo, trigo e cana-de-açúcar. Esta bactéria é capaz de causar a doença da estria mosqueada na variedade B- 4362 de cana-de-açúcar e a doença da estria vermelha em algumas variedades de sorgo. Em várias plantas a virulência das bactérias patogênicas é em parte dependente de um grupo...

  5. Gestão de resíduos de equipamentos elétricos e eletrónicos: proposta de modelo integrado de operação

    OpenAIRE

    Santos, Diogo André dos

    2015-01-01

    Dissertação de Mestrado em Engenharia do Ambiente Os Resíduos Elétricos e Eletrónicos (REEE) possuem uma enorme fonte de recursos secundários (por exemplo, ouro ou prata), capazes de gerar valor acrescentado para os sistemas de gestão deste fluxo de resíduos. Assim, a aposta em novas metodologias e ferramentas de gestão capazes de maximizar quer a eficácia quer a eficiência dos sistemas integrados de gestão assumem valor inestimável. Neste contexto o âmbito do presente trabalho visa a e...

  6. En busca del arquetipo perdido. Pabellón de invitados en Kempsey, Nueva Gales del Sur, Australia (G. Murcutt, 1992

    Directory of Open Access Journals (Sweden)

    Miguel De Lózar de la Viña

    2015-12-01

    Full Text Available En el pequeño pabellón de invitados que Glenn Murcutt proyectó y construyó no muy lejos, pero tampoco demasiado cerca, de su casa en Kempsey, Australia, en 1992, el arquitecto australiano consigue acercarse, más que en ninguna otra de sus obras, a aquel misterioso arquetipo alrededor del cual orbita buena parte de su arquitectura. En la cabaña de Kempsey, Murcutt es, asimismo, capaz de aunar en un interminable juego de espejos lo mítico con lo popular, lo primitivo con las más modernas tecnologías, el pasado y el presente, el trascendentalismo con el pragmatismo, dentro de una arquitectura que, guardando una prudente distancia con respecto a la naturaleza en la que se enclava, es capaz de convivir con ella desde su profundo conocimiento y respeto.

  7. Ciência natural e consciência

    Directory of Open Access Journals (Sweden)

    Engelmann Arno

    1998-01-01

    Full Text Available Minha abordagem ao universo é cética. Todas as coisas são conhecidas através de um conhecimento incompleto. Apenas o observador individual é capaz de saber por um momento o que é verdadeiro. Mas essa verdade se torna probabilística quando o presente se foi. Chamo de consciência-imediata essa verdade individual. Chamo de consciência-mediata o auto-conhecimento em outros animais, humanos ou não, de parte de seu funcionamento. Chamo de consciências-mediatas-de-outros partes capazes de serem estudadas. O estudo é feito através de indicadores de consciência, sendo um deles o relato verbal.

  8. El proceso de contrataci??n como fuente de ventaja competitiva = The process of contracting as a source of competitive advantage

    OpenAIRE

    2013-01-01

    El capital humano es un factor clave en las organizaciones. Es el ??nico recurso capaz de procesar otros, es decir, los dem??s recursos dependen de los recursos humanos para su procesamiento. El departamento de Recursos Humanos es el encargado de gestionar estos recursos, en ello radica su importancia en la empresa, ya que se convierte en aspecto clave para alcanzar los objetivos propuestos. Dentro de las distintas responsabilidades y actividades que desarrolla el departamento de Recursos Hum...

  9. Gerencia de organizaciones inteligentes

    OpenAIRE

    Carlos Eduardo Martínez Fajardo

    2000-01-01

    En el presente artículo se analiza el concepto de gerencia de organizaciones inteligentes centrado en tres factores esenciales seleccionados por el autor y que enfocan la capacidad gerencial de las organizaciones hacia el autoaprendizaje y la innovación del conocimiento: Una estructura inteligente capaz de producir bienes, servicios y conocimientos con calidad y costos eficientes. Entorno ambivalente conectado a la estructura interna mediante procesos de realimentación que originan conocimien...

  10. Estudio de la Acetilcolinesterasa (ACHE) y la Colinesterasa (CHE) en Animales y Humanos de la Población Andaluza. Su significación clínica.

    OpenAIRE

    Repetto Jiménez, Jesús

    2016-01-01

    La primera sugerencia sobre la existencia en el suero sanguíneo de un factor capaz de hidrolizar la acetilcolina fue realizada por Dale en 1914; su implicación en la función nerviosa se debe a Loewi y Navratil (1921). Este factor que hidrolizaba los ésteres de colina recibió el nombre de colinesterasa por Stedman y col (1932); posteriormente se distinguieron una pseudocolinesterasa y colinesterasa verdadera (acetil colinesterasa). Se ha investigado mucho ...

  11. Estudio de un brote epidémico causado por distintas cepas de "Acinetobacter baumannii" multirresistente: estudio de la epidemicidad y virulencia

    OpenAIRE

    Merino Carballeira, María

    2016-01-01

    [Resumen] El patógenos oportunista Acinetobacter baumannii es uno de los seis microorganismos multirresistentes que más preocupa en hospitales de todo el mundo. Esto es debido a su capacidad para persistir en ambientes extremos, ya que es capaz de sobrevivir en el ambiente hospitalario, y a su versatilidad genética, ya que tiene la capacidad para desarrollar mecanismos de resistencia a antibióticos y desinfectantes. Múltiples brotes hospitalarios producidos por cepas de A. b...

  12. DOS ÓPTICAS SOBRE LA SOLUCIÓN DEL PROBLEMA MENTE-CUERPO: COLIN McGINN Y THOMAS NAGEL

    Directory of Open Access Journals (Sweden)

    Eber Betanzos

    2014-09-01

    Full Text Available El problema mente-cerebro resulta esencial para entender la naturaleza del conocimiento científico y entender las capacidades cognitivas del ser humano. Ante ello se plantea un dilema, ¿es nuestro conocimiento humano capaz de resolver la histórica dualidad mentecuerpo? Hay dos posturas, la versión pesimista-optimista de Colin McGinn y la pesimista de Thomas Nagel.

  13. Puntos sobre las íes en la literatura colombiana: XX Rafael Pombo

    Directory of Open Access Journals (Sweden)

    Luis Vidales

    1965-12-01

    Full Text Available No tiene nada de raro que a estas alturas no exista acuerdo sobre el valor del poeta bogotano Rafael Pombo. Entra en ello no solo la ausencia de crítica capaz de encuadrar su obra, con profundidad verdadera, y separar de ella el orujo y la uva, sino también el relativo olvido en que suelen caer en el país las figuras del pasado.

  14. Efectos adversos y paliativos de los canabinoides

    OpenAIRE

    Contreras, Carlos M.; Ana G. Gutiérrez García; Margarita Saavedra; Blandina Bernal Morales; Juan Francisco Rodríguez Landa; Minerva Hernández Lozano

    2003-01-01

    En un sentido amplio, un paliativo es un remedio que mitiga los trastornos asociados a lo incurable, mientras que un agente terapéutico es aquel capaz de curar una enfermedad. La marihuana (Cannabis sativa) es una planta originaria de Asia Central y sus principales componentes activos (canabinoides) son tres: el tetrahidrocanabinol, el canabinol y el canabidiol, los cuales poseen propiedades psicotrópicas y vegetativas. Empíricamente, se les han atribuido ciertas acciones, en el manejo del do...

  15. Maravilha e conhecimento na arte religiosa de Minas colonial

    OpenAIRE

    Viana,Fábio Henrique

    2011-01-01

    A arte religiosa barroca construiu verdadeiras máquinas capazes de maravilhar quem se aproximasse. O objetivo era a conversão do fiel e a maravilha, a isca que o podia atrair, fazendoo considerar os ensinamentos da Igreja. Nesse sentido, procurase identificar na pintura, talha e música religiosas de Minas colonial alguns artifícios usados para maravilhar e ensinar os fiéis.

  16. A teratologia múltipla: Robert Bloch e o seu bestiário

    Directory of Open Access Journals (Sweden)

    Alcebíades Diniz Miguel

    2008-10-01

    Full Text Available Howard Phillips Lovecraft acreditava que os povos, para criarem obras fantásticas de terror sobrenatural, deveriam ter certa “inclinação” para o deslumbramento diante do irracional, afirmando que a França e seu povo, por exemplo, seriam racionais demais para tanto. O escritor cita os judeus no rol dos povos possuidores de uma mitologia, com seus golems, dybbuks e outras criaturas, capaz de inspirar o terror sobrenatural.

  17. O OLHAR ESTRANGEIRO EM CORAÇÃO DAS TREVAS DE JOSEPH CONRAD

    Directory of Open Access Journals (Sweden)

    Prof. Dr. Marcos César de Paula Soares

    2013-09-01

    Full Text Available Este ensaio traz uma análise do romance Coração das trevas (1899 do escritor Joseph Conrad em que a ênfase recai nos modos através dos quais seu “olhar estrangeiro” lhe permitiu elaborar formas literárias capazes de problematizar a visão hegemônica do império britânico e suas representações culturais

  18. Violencia e Hipertensión. Un estudio sobre la génesis psicosomática de la Enfermedad Hipertensiva

    OpenAIRE

    José Vicente Arévalo Álvarez

    2003-01-01

    Este trabajo es un intento de demostrar, en base a  la experiencia de largos años de trabajo clínico, como la violencia es capaz de producir lesiones funcionales específicas, que en el curso de los años originan lesiones orgánicas, capaces de llevar al paciente hacia la invalidez y a la muerte, con el aparecimiento de trastornos psicosomáticos como la hipertensión

  19. Bases filosóficas para una teoría normativa integral de la argumentación. Hacia un enfoque unificado de sus dimensiones lógica, dialéctica y retórica

    OpenAIRE

    Bermejo Luque, Lilian

    2006-01-01

    Tras el análisis de las principales teorías de la argumentación contemporáneas, se desarrollan concepciones alternativas de las dimensiones lógica, dialéctica y retórica de la argumentación de cara a la elaboración de una teoría normativa capaz de integrarlas.

  20. El grado de importancia del marketing relacional en el espacio de alojamiento para el turismo de naturaleza : el caso de Portugal

    OpenAIRE

    Carvalho, Mário João Paulo de Jesus

    2010-01-01

    Tese de Doutoramento apresentada à Universidad de Extremadura. El objetivo que se persigue en la presente Tesis Doctoral, es llevar a cabo un análisis acerca de la adecuación del Marketing Relacional en los alojamientos de turismo de naturaleza que operan en los mercados actuales, como estrategia competitiva capaz de proporcionar ventajas sostenibles en el tiempo. Se busca identificar un modelo de desarrollo para las unidades de alojamiento turístico en el turismo de natural...

  1. Herramienta para la Evaluación y Certificación de Procesos Software.

    OpenAIRE

    Gómez Checa, José

    2015-01-01

    En los últimos años, las empresas se han visto afectadas por numerosos desastres, ocasionados principalmente por los fallos en los productos software. Esto, ha convertido la calidad de sistemas de información en uno de los principales objetivos estratégicos para las organizaciones, haciendo imprescindible, por lo tanto, conocer los procesos software en profundidad para poder aportar mejoras. Ante tal necesidad, se hace necesario un modelo de referencia capaz de evaluar y medir la calidad d...

  2. ESTUDIO PRELIMINAR DE LA FITOHEMOAGLUTININA DE LA CANAVALIA BRASILIENSIS

    Directory of Open Access Journals (Sweden)

    Gerardo Perez Gómez

    2010-09-01

    Full Text Available Se establecio la presencia de una lectina en semillas de Canavalia brasiliensis. Esta proteina que es una globulina, presenta una alta actividad aglutinante respecto a eritrocitos equinos y caninos; esta aglutinacion es inhibida considerable mente por melezitosa (7mg/ml y en menor grado por sacarosa, fructosa y glucosa. Los ensayos realizados con eritrocitos humanos, bovinos o de carnero, demuestra que la lectina es capaz de aglutinarlos solo despues de una tripsinizacion.

  3. Uso da tecnologia como ferramenta de avalia????o no cuidado cl??nico de rec??m-nascidos prematuros

    OpenAIRE

    2006-01-01

    Objetivo: Analisar a aplica????o do Neonatal Therapeutic Intervention Scoring System (NTISS) como um instrumento capaz de quantificar a utiliza????o de tecnologias nas pr??ticas assistenciais de unidades de terapia intensiva neonatal, no sentido de detectar varia????es nos cuidados ao rec??m-nascido de alto risco. M??todos: Foi realizado um estudo observacional prospectivo descritivo da intensidade de tecnologias em duas unidades de terapia intensiva neonatal, sendo uma p...

  4. Atividade antimicrobiana de bactérias lácticas isoladas de produtos cárneos frente a Listeria monocytogenes e Staphylococcus aureus

    Directory of Open Access Journals (Sweden)

    Dabés A.C.

    2001-01-01

    Full Text Available De seis amostras de pernil desossado curado e três amostras de salame tipo italiano artesanal foram isoladas 288 cepas de bactérias lácticas. Pelo teste de inibição direta 59 delas foram capazes de inibir in vitro o desenvolvimento de cepas de Listeria monocytogenes e de Staphylococcus aureus, o que demonstra que produzem compostos inibitórios.

  5. Derecho empresarial

    OpenAIRE

    Rangel Charles, Juan Antonio

    2014-01-01

    Este eBook proporcionará al lector conocimiento sobre derecho corporativo mediante el estudio de las disposiciones jurídicas y de la aplicación práctica de las mismas de tal suerte que, al finalizar la lectura de este material, será capaz de resolver casos prácticos de derecho empresarial y propiedad intelectual.

  6. Estrategias innovadoras en la comprensión lectora para el desarrollo de enseñanza aprendizaje de los niñ@s de cuarto a séptimo año de educación básica del centro educativo intercultural bilingüe Humberto Vacas Gómez de la comunidad de Surupogios de la parroquia Guanujo, cantón Guaranda, periodo 2012 -2013

    OpenAIRE

    Llumitaxi Chela, María Esther

    2013-01-01

    Las instituciones educativas deben formar a los estudiantes para que se conviertan en ciudadanos bien informados y profundamente motivados, provistos de un sentido crítico y capaz de analizar los problemas, buscar soluciones, aplicar éstas y asumir responsabilidades sociales. Para alcanzar estos objetivos, puede ser necesario reformular los planes de estudio, utilizar métodos adecuados, facilitar el acceso a nuevos planteamientos pedagógicos y fomentarlos para propiciar la adquisición de cono...

  7. Papel de la glucógeno sintetasa cinasa 3β (GSK-3β) en el pre y post acondicionamiento isquémicos en ratas hipertensas espontáneas

    OpenAIRE

    González Arbeláez, Luisa Fernanda; Peréz Núñez, Ignacio Adrián; Schinella, Guillermo; Mosca, Susana María

    2010-01-01

    Estudios recientes en animales normotensos muestran que la enzima glucógeno sintetasa cinasa 3β (GSK-3β) es una de las potenciales cinasas que pueden regular la formación y/o apertura del poro de transición mitocondrial (PTM). La GSK-3β es constitutivamente activa y es inactivada por fosforilación en Ser 9. En estas condiciones es capaz de interactuar con los principales componentes del PTM e impedir su apertura.

  8. El espacio transfuncional en la vivienda colectiva

    OpenAIRE

    Bertorello, Matías; Lomello, Mariela

    2015-01-01

    Este trabajo desarrolla indagaciones y experimentaciones sobre la transfuncionalidad espacial, entendida como la capacidad de adaptabilidad a diferentes funciones y usos en distintos momentos, responde a las nuevas necesidades de la sociedad contemporánea y si constituye un aporte al enriquecimiento de la condición existencial del espacio arquitectónico de la vivienda colectiva. El concepto de espacio transfuncional define al edificio como sistema capaz de ser readecuado a dos fines princi...

  9. Hospital Princesa Margarita

    Directory of Open Access Journals (Sweden)

    Powell y Moya, Aquitectos

    1961-04-01

    Full Text Available El amplio programa desarrollado en este grande e importante Centro sanitario, abarcó tres fases de construcción, al final de las cuales se consiguió el Hospital General, capaz para 600 camas. En la primera parte se construyeron los siguientes departamentos: Enfermos del exterior, Accidentes, Medicina Física, Patología, Rayos X, y el primero de los cuatro núcleos quirúrgicos.

  10. Diseño y fabricación de un prototipo de distractor de sínfisis intraoral para transporte óseo en reconstrucción mandibular

    OpenAIRE

    Calle Vargas, Alejandra Patricia; Tamayo Gómez, Ana Cristina

    2006-01-01

    La distracción osteogénica es un proceso quirúrgico que consiste en la incisión del hueso (osteotomía), para instalar un instrumento o herramienta capaz de separar los segmentos de hueso (distractor), con el fin de que haya aposición ósea en el espacio remanente y de esta manera aumentar la longitud o amplitud del hueso sobre el que se está trabajando.

  11. "Acercándonos a otros mundos". Propuesta de integración de dos géneros en la clase de E/LE: la narrativa hispanoamericana y el comic europeo

    Directory of Open Access Journals (Sweden)

    Consuelo Escudero Medina

    2006-01-01

    Full Text Available Es objeto de este trabajo poner a disposición de los profesores de E/LE una experiencia didáctica centrada en el aspecto cultural hispánico.En efecto, esta propuesta se inscribe en una línea que se esfuerza por introducir la historia y la cultura como un elemento de dinamismo capaz de acercar intelectualmente al estudiante a otra cultura, particularmente, a la cultura hispanoamericana.

  12. The Foreign Policy of Venezuela Toward El Salvador: 1979-1983

    Science.gov (United States)

    1990-06-01

    embargo, prest6 una apariencia de legitimidad al gobierno, sin que el partido se mostrara capaz de controlar su rumbo. En efecto, "la resistencia del PDC... Resistencia . Nacional (FARN), las Fuerzas Armadas de Liberaci6n (PAL), el Partido Revolucionarlo de TrabaJadores Centroaniericanos (PRTC) y las Fuerzas...partidos politicos: AD = Acci6n Democr~tica; COPEI = Partido Social Cristiano; LS = Liga Socialista; MAS = Movimiento al Socialismo; MEP = Movimiento

  13. Perú: Estado-Nación y sociedad multicultural

    Directory of Open Access Journals (Sweden)

    José Marín

    2011-01-01

    en diferentes dominios como la educación y la gestión de la rica biodiversidad y la diversidad cultural, es la pregunta que tratamos de respondernos, planteando desde la perpspectiva intercultural diferentes interrogantes que cuestionan la visión monocultural de las politicas governamentales, hasta las proposiciones de refundación de otro Estado, capaz de asumir la realidad ecológica, social, política y cultural de nuestro continente.

  14. Nuevas estrategias terapéuticas en diabetes mellitus tipo 1 New therapeutic strategies for type 1 diabetes mellitus

    OpenAIRE

    Barajas, M. (Miguel); Príncipe, R.M. (R.M.); Escalada, J.; Prósper, F; J. Salvador

    2008-01-01

    El principal determinante del riesgo de complicaciones derivadas de la diabetes mellitus tipo 1 se debe a los altos niveles de glucosa en sangre mantenidos durante largo tiempo. Para conseguir un beneficio terapéutico en pacientes con diabetes mellitus es necesario desarrollar tratamientos que permitan de manera segura, efectiva y estable mantener la normoglucemia. Lamentablemente, el tratamiento de la diabetes mellitus tipo 1 mediante el aporte exógeno de insulina no es capaz de conseguir ni...

  15. La descarboxilación del glutamato en Synechocystis sp. PCC 6803 enzimas implicadas y función fisiológica

    OpenAIRE

    Lucena Soto, José Manuel

    2003-01-01

    Las cianobacterias constituyen el único grupo de organismos procariotas capaz de llevar a cabo una fotosíntesis oxigénica similar a la que realizan las plantas superiores (Blankenship, 1992; Stanier y Cohen-Bazire, 1977), ya que poseen aparatos fotosintéticos situados en membranas tilacoidales y dos fotosistemas similares a los localizados en los cloroplastos. Se diferencia en que, excepto en proclorofitas, las cianobacterias carecen de clorofila b (Morden y Golden, 19919 y presentan pigmento...

  16. Fungos associados a invertebrados marinhos: isolamento, seleção e avaliação da produção de enzimas celulolíticas.

    OpenAIRE

    Carlos Henrique Domingues da Silva

    2010-01-01

    A micologia marinha é uma ciência relativamente recente e pouco se conhece sobre a diversidade das suas comunidades. Assim, o isolamento, triagem e preservação de fungos derivados do mar podem levar à descoberta de novas tecnologias. O objetivo deste estudo foi conhecer a diversidade de fungos filamentosos derivados marinhos e selecionar isolados capazes de produzir enzimas celulolíticas. Para tanto, foram isolados seletivamente fungos filamentosos a partir de amostras de macro-organismos mar...

  17. A teratologia múltipla: Robert Bloch e o seu bestiário

    OpenAIRE

    Alcebíades Diniz Miguel

    2008-01-01

    Howard Phillips Lovecraft acreditava que os povos, para criarem obras fantásticas de terror sobrenatural, deveriam ter certa “inclinação” para o deslumbramento diante do irracional, afirmando que a França e seu povo, por exemplo, seriam racionais demais para tanto. O escritor cita os judeus no rol dos povos possuidores de uma mitologia, com seus golems, dybbuks e outras criaturas, capaz de inspirar o terror sobrenatural.

  18. Publicidad y cultura

    OpenAIRE

    2012-01-01

    La práctica publicitaria nació con la actividad mercantil. Actualmente, encarna la responsabilidad de agente social. Es capaz de influir, no sólo en el estilo de vida de los ciudadanos, sino en la configuración de su cultura en general. Al mismo tiempo, la publicidad se transforma en paralelo a los sucesos tecnológicos, económicos y sociales. Publicidad y cultura son dos fenómenos que se retroalimentan.

  19. Gerencia de organizaciones inteligentes

    OpenAIRE

    2011-01-01

    En el presente artículo se analiza el concepto de gerencia de organizaciones inteligentes centrado en tres factores esenciales seleccionados por el autor y que enfocan la capacidad gerencial de las organizaciones hacia el autoaprendizaje y la innovación del conocimiento: Una estructura inteligente capaz de producir bienes, servicios y conocimientos con calidad y costos eficientes. Entorno ambivalente conectado a la estructura interna mediante procesos de realimentación que originan conocimien...

  20. Resistência a β-lactâmicos em Acinetobacter spp isolados de efluente hospitalar no sul do Brasil

    OpenAIRE

    Gusatti, Carolina Souza; Ferreira, Alessandra Einsfeld; Fuentefria,Daiane Bopp; Corção, Gertrudes

    2009-01-01

    Acinetobacter spp é um importante patógeno causador de infecções nosocomiais que acomete pacientes imunocomprometidos e capaz de adquirir resistência a antimicrobianos com facilidade. Os esgotos hospitalares são importantes disseminadores de genes de resistência a antimicrobianos para a microbiota ambiental. Neste contexto, 30 cepas de Acinetobacter spp provenientes de efluente de um hospital em Porto Alegre, RS, foram analisados quanto ao perfil de susceptibilidade a β-lactamases, quino...

  1. RUNAWAY STARS AS TRACERS OF STAR FORMATION AND EARLY DYNAMICAL EVOLUTION

    Directory of Open Access Journals (Sweden)

    A. Poveda

    2008-01-01

    Full Text Available La reciente y muy precisa determinación de los movimientos propios en el sistema BN-KL-n en Orión nos ha motivado a construir un modelo dinámico capaz de producir las estrellas desbocadas presentes en el sistema por medio de encuentros cercanos entre sus miembros. Hemos realizado integraciones de N-cuerpos y presentamos un modelo congruente para el sistema BN-KL-n.

  2. Un estudio exploratorio de una experiencia medioambiental: la escalera del instituto, un espacio para la educación ambiental

    Directory of Open Access Journals (Sweden)

    Antonio Joaquín Franco-Mariscal

    2014-10-01

    y que el 73 % del alumnado manifieste cierto interés y motivación en su desarrollo. En lo referente a la sensibilización, destaca especialmente la concienciación creada en el alumnado, capaz de percibir la contaminación de su ciudad y proponer medidas para solucionarlas y ser conscientes de la influencia de lo aprendido en su vida cotidiana.

  3. Problema, teoria e observação em ciência: para uma reorientação epistemológica da educação em ciência

    Directory of Open Access Journals (Sweden)

    João Felix Praia

    2002-01-01

    Full Text Available Trabalhos recentes de investigação sugerem que freqüentemente os professores de ciências constroem imagens de ciência marcadas por visões de índole empirista/indutivista. O presente artigo desenvolve-se em torno de contributos da epistemologia, numa perspectiva de transposição para o campo da Educação em Ciência, isto é, centra a nossa atenção na busca e apropriação crítica de elementos fundamentadores de uma teorização para a Educação em Ciência, por sua vez, também ela capaz de orientar práticas educacionais. É com naturais limitações, decorrentes ainda do actual estatuto epistemológico da Educação em Ciência que procuramos desenvolver um conjunto de idéias sobre aspectos tão importantes como o problema, a teoria e a observação em Ciência, capazes de contribuir para que os professores se sintam mais informados e, por via disso, sejam mais capazes de fundamentar as suas opções educacionais e didácticas em relação à ciência que ensinam.

  4. Análise de integração e contágio financeiro na América do Sul

    Directory of Open Access Journals (Sweden)

    Paulo Matos

    2014-06-01

    Full Text Available Este artigo agrega à discussão promovida em Mejía-Reyes (2000 e Hecq (2001 sobre integração e contágio financeiro nos países da América do Sul, através da modelagem de características comuns no longo e no curto prazo das trajetórias de evolução dos índices das principais bolsas de valores. Apesar da diversidade nos fundamentos macroeconômicos deste continente, os resultados sugerem os sistemas financeiros destes países não devam ser analisados individualmente, pois os desvios do equilíbrio de longo prazo em qualquer um dos mercados financeiros são capazes de influenciar os demais mercados em questão, durante o período de janeiro de 1998 e novembro de 2010. Alinhado a D'ecclesia e Costantini (2006, as evidências no curto prazo sinalizam a presença de contágio financeiro, mais evidente em razão de eventos extremos globais, positivos ou negativos, capazes de provocar oscilações de curto prazo mais acentuadas e em direções comuns, seguindo uma trajetória em que se destaca o índice peruano, cujo ciclo, imprevisível, é o único capaz de prever o ciclo comum e os demais ciclos individuais.

  5. AVALIAÇÃO DA AUTOEFICÁCIA MATERNA PARA A PREVENÇÃO DA DIARREIA INFANTIL

    Directory of Open Access Journals (Sweden)

    Taís Capistrano Lopes

    2013-01-01

    Full Text Available El objetivo fue evaluar la autoeficacia para prevenir la diarrea infantil entre madres de niños de Quixadá-Ceará, Brasil. Estudio descriptivo, cuantitativo, en tres Unidades Básicas de Salud de Quixadá-CE, de marzo a mayo de 2012. Se entrevistaron 150 madres de niños menores de cinco años, mediante formulario sociodemográfico y Escala de Autoeficacia Materna para Prevención de la Diarrea Infantil. 51,3% de los niños tuvieron diarrea, 89% de las madres presentaron niveles menores de autoeficacia para prevención de esta. Los ítems de menor autoeficacia fueron "soy capaz de evitar que mi hijo ponga objetos sucios en la boca" (10,2%, "soy capaz de lavar frutas y verduras con hipoclorito de sodio o lejía" (25,3% y "no soy capaz de ofrecer a mi hijo sobrantes de refecciones anteriores" (25,3%. La mayoría de las madres (89,0% presentó baja autoeficacia para prevenir la diarrea infantil. La autoeficacia materna debe ser considerada para evitar esta enfermedad.

  6. Plantas medicinais utilizadas por idosos com diagnóstico de Diabetes mellitus no tratamento dos sintomas da doença Medicinal plants used by elderly people with Diabetes mellitus in the treatment of the disease symptoms

    Directory of Open Access Journals (Sweden)

    A.M. Feijó

    2012-01-01

    Full Text Available Este trabalho teve como objetivo investigar as plantas medicinais utilizadas por idosos assistidos em uma Unidade Básica de Saúde de Pelotas-RS, com diagnóstico de Diabetes mellitus, como terapia complementar no tratamento dos sintomas da doença. Caracterizou-se por pesquisa qualitativa, realizada em julho de 2009, no município de Pelotas-RS. Foram entrevistados 18 idosos com idade entre 60 e 77 anos, sendo 14 do sexo feminino. Os participantes citaram 20 plantas medicinais utilizadas como terapia complementar no tratamento do Diabetes mellitus. Entre estas, as mais citadas utilizadas para diminuir os níveis de glicose no sangue foram Sphagneticola trilobata, Bauhinia spp. e Syzygium cumini, sendo que para as duas últimas há comprovação científica do efeito hipoglicemiante. A infusão foi a forma de preparo predominante. Considera-se importante a realização de estudos farmacológicos que investiguem os efeitos das plantas utilizadas pela população, a fim de que o uso proporcione os benefícios desejados e não cause danos à saúde.This study aimed to investigate medicinal plants used as complementary therapy by the elderly with diabetes mellitus, assisted by a Health Basic Unit in Pelotas (RS, Brazil. This qualitative research was conducted in July 2009. Eighteen 60 to 77 years old elderly (14 of them female were interviewed. The participants identified 20 medicinal plants used as complementary therapies in the treatment of diabetes mellitus. Among these, the most used ones to reduce the levels of glucose in the blood were Sphagneticola trilobata, Bauhinia spp. and Syzygium cumini. For the last two plants, there are scientific proofs of hypoglycemic effects. The infusion was the predominant form of preparation. Studies to investigate the pharmacological effects of plants used by the population have become very important, for providing scientific information on their possible health benefits and side effects.

  7. 五种观花树种光合与叶绿素荧光特征研究%Study of Photosynthetic and Chlorophyll Characteristics of Five Kinds of Flowering View Tree Species

    Institute of Scientific and Technical Information of China (English)

    官莉莉; 邓绍龙; 杨振意; 钟泳林; 陈红跃

    2012-01-01

    Photosynthesis is an important physiological indicator of trees. Chlorophyll fluorescence is an effective probe for monitoring the Photosynthesis of trees. In thispaper, Photosynthetic and chlorophyll characteristics of five flowering view tree species including Lagertstroemia speciosa, Bauhinia variegata, Cassia fistula, Michelia chapensis and M. maudiae had been measured. The results were as follows; The photosynthetic rate of B. variegata speciosa and C. fistula were higher than that of M. chapensis and M. maudiae. For the ETR、 PS II and Y(II) ,the former tree species were also broadly higher than that of the later ones. On the whole, the former tree species may suitable for wider living site.%光合作用是树木的重要生理指标之一.叶绿素荧光是监测植物光合作用的有效探针.文章对大叶紫薇(Lagertstroemia speciosa)、宫粉紫荆(Bauhinia variegata)、腊肠树(Cassia fistula)、乐昌含笑(Michelia chapensis、深山含笑(M.maudiae)这五种观花树种的2年生苗木进行了光合特征及叶绿素荧光特征指标的测定,比较了各参数的差异.结果表明:大叶紫薇、宫粉紫荆和腊肠树总体上具有较高的光合指标,而乐昌含笑和深山含笑则相对较低;大叶紫薇、宫粉紫荆和腊肠树总体上的相对电子传递速率ETR、PS Ⅱ的实际量子产量Y(Ⅱ)以及非调节性能量耗散的量子产量Y(NO)相对较高于乐昌含笑和深山含笑,而调节性能量耗散的量子产量Y(NPQ)和非光化学淬灭系数NPQ则相反.总体上看,大叶紫薇、宫粉紫荆和腊肠树具有更高的光合效能和环境适应能力.

  8. 檀香与不同豆科植物寄生关系的研究%Studies on Parasitic Relationship between Santalum album L. and Leguminous Plants

    Institute of Scientific and Technical Information of China (English)

    陈荣; 张新华; 马国华

    2014-01-01

    In order to understand the parasitic relationship between Santalum album L. and leguminous plants, eleven leguminous species were planted with S. album. The leaf photosynthetic characters, height and base diameter of S. album and its haustoria number and size were studied. The results showed that number and size of haustoria, height and base diameter of S. album had signiifcant differences among different hosts. The excellent hosts for S. album were Calliandra haematocephala, Caesalpinia sappan, Acacia confusa and Erythrina corallodendron, and Acacia mangium, Dalbergia odorifera and Cassia surattensis were just general hosts, while Delonix regia, Ormosia pinnata, Leucaena leucocephala and Bauhinia blakeana were unsuitable hosts. Meanwhile, the height and diameter, leaf photosynthesis characters of S. album had close relation with number of haustoria parasitized on roots of leguminous plants. So, the plantation of S. album should choose appropriate host plant.%为了解檀香(Santalum album L.)与不同豆科植物的寄生关系,选取11种具有重要经济价值的豆科植物和檀香一起种植,对檀香叶片的光合特征和株高、地径以及寄主植物根系的吸器大小进行了测定。结果表明,檀香的吸器大小、数量在不同寄主之间存在很大差异,不同寄主对檀香的株高、地径也有显著差异。檀香的优良寄主有美洲合欢(Calliandra haematocephala)、苏木(Caesalpinia sappan)、台湾相思(Acacia confusa)、龙牙花(Erythrina corallodendron);一般的寄主植物有马占相思(Acacia mangium)、降香黄檀(Dalbergia odorifera)、黄槐(Cassia surattensis);不适宜的寄主植物有凤凰木(Delonix regia)、海南红豆(Ormosia pinnata)、银合欢(Leucaena leucocephala)、洋紫荆(Bauhinia blakeana)。同时,檀香的株高、地径及光合特征和吸器数量密切相关。因此,檀香种植时应选择适宜的优良寄主植物。

  9. Differential binding properties of Gal/GalNAc specific lectins available for characterization of glycoreceptors.

    Science.gov (United States)

    Wu, A M; Song, S C; Sugii, S; Herp, A

    1997-01-01

    Differentiating the binding properties of applied lectins should facilitate the selection of lectins for characterization of glycoreceptors on the cell surface. Based on the binding specificities studied by inhibition assays of lectin-glycan interactions, over twenty Gal and/or GalNAc specific lectins have been divided into eight groups according to their specificity for structural units (lectin determinants), which are the disaccharide as all or part of the determinants and of GalNAc alpha 1-->Ser (Thr) of the peptide chain. A scheme of codes for lectin determinants is illustrated as follows: (1) F (GalNAc alpha 1-->3GalNAc), Forssman specific disaccharide--Dolichos biflorus (DBL), Helix pomatia (HPL) and Wistaria floribunda (WFL) lectins. (2) A (GalNAc alpha 1-->3 Gal), blood group A specific disaccharide--Codium fragile subspecies tomentosoides (CFT), Soy bean (SBL), Vicia villosa-A4 (VVL-A4), and Wistaria floribunda (WFL) lectins. (3) Tn (GalNAc alpha 1-->Ser (Thr) of the protein core)--Vicia villosa B4 (VVL-B4), Salvia sclarea (SSL), Maclura pomifera (MPL), Bauhinia purpurea alba (BPL) and Artocarpus integrifolia (Jacalin, AIL). (4) T (Gal beta 1-->3GalNAc), the mucin type sugar sequences on the human erythrocyte membrane(T alpha), T antigen or the disaccharides at the terminal nonreducing end of gangliosides (T beta)--Peanut (PNA), Bauhinia purpurea alba (BPL), Maclura pomifera (MPL), Sophora japonica (SJL), Artocarpus lakoocha (Artocarpin) lectins and Abrus precatorius agglutinin (APA).(5) I and II (Gal beta 1-->3(4)GlcNAc)--the disaccharide residue at the nonreducing end of the carbohydrate chains derived from either N- or O-glycosidic linkage--Ricinus communis agglutinin (RCA1), Datura stramonium (TAL, Thorn apple), Erythrina cristagalli (ECL, Coral tree), and Geodia cydonium (GCL). (6) B (Gal alpha 1-->3Gal), human blood group B specific disaccharide--Griffonia(Banderiaea) simplicifolia B4 (GSI-B4). (7) E (Gal alpha 1-->4Gal), receptors for pathogenic E

  10. Espectro polínico de amostras de mel de Apis mellifera L., coletadas na Bahia Pollen spectrum of samples of Apis mellifera L., honey collected in Bahia State, Brazil

    Directory of Open Access Journals (Sweden)

    AUGUSTA CAROLINA DE CAMARGO CARMELLO MORETI

    2000-01-01

    Full Text Available O espectro polínico encontrado em amostras de mel provenientes de seis municípios do Estado da Bahia foi analisado com o objetivo de contribuir para o conhecimento da flora visitada por Apis mellifera L. 1758 (Hymenoptera: ApidaeA identificação dos tipos polínicos foi feita por meio de literatura especializada e de informações de campo. Foram encontrados 43 tipos de pólen, sendo consideradas como dominantes as espécies Eucalyptus sp. (Myrtaceae, Mimosa verrucosa Benth. (Mimosaceae, M. scabrella Benth. (Mimosaceae e Bauhinia sp. (Caesalpiniaceae. Os tipos acessórios foram Alternanthera ficoidea R.Br. (Amaranthaceae, tipo Compositae (Asteraceae e Cecropia sp. (Moraceae. Destacou-se a participação de Mimosa sp. (Mimosaceae e de outras espécies silvestres na composição dos méis nos municípios considerados, registrando-se ainda a espécie Eucalyptus sp. (Myrtaceae como uma das principais fontes de alimento das abelhas dessa região.Pollen spectrum found in honey samples from six localities of Bahia State, Brazil, was analyzed with the objective to contribute for the knowledge of the plants used by Apis mellifera L., 1758 (Hymenoptera: Apidae. The identification of the pollen types was made by specialized literature and by field information. Two hundred pollen grains were studied in order to determine the percentage and the occurrence of each type. Forty three pollen types were identified, being considered as the predominant types Eucalyptus sp. (Myrtaceae, Mimosa verrucosa Benth. (Mimosaceae, M. scabrella Benth. (Mimosaceae and Bauhinia sp. (Caesalpiniaceae. The accessory pollen types were Alternanthera ficoidea R.Br. (Amaranthaceae, Compositae type (Asteraceae and Cecropia sp. (Moraceae. It is intense the participation of Mimosa sp. (Mimosaceae and other wild species in the honey composition of the six localities considered. Eucalyptus sp. (Myrtaceae is one of the dominant sources of bee food in some regions of Bahia State.

  11. Efficacy of some botanical extracts against Trogoderma granarium in wheat grains with toxicity evaluation.

    Science.gov (United States)

    Derbalah, Aly S

    2012-01-01

    In an attempt to find alternative control methods for stored products insects, extracts of seven plant species (Cassia senna, Caesalpinia gilliesii, Thespesia populnea var. acutiloba, Chrysanthemum frutescens, Euonymus japonicus, Bauhinia purpurea, and Cassia fistula) were evaluated under laboratory conditions for their ability to protect wheat (Triticum spp.) grains against Trogoderma granarium insect. Moreover, gas chromatography-mass spectrometry (GC-MS) analysis was carried to identify the chemical components of the most effective plant extract against T. granarium. Furthermore, the safety of the most effective plant extract was evaluated with respect to biochemical and histological changes in treated rats relative to control. The results revealed that, the tested botanical extracts showed high efficiency against T. granarium with respect to mortality and progeny of the adults. C. senna was the most effective botanical extract against T. granarium. The GC-MS analysis of the most effective plant extract showed the presence of different bioactive compounds that is known by its insecticidal activity. The most effective plant extract showed no toxicity on treated rats relative to control with respect to biochemical and histological changes. The results suggest the ability of using these plant extracts for wheat grains protection as a safe alternative to insecticides.

  12. 佛山市禅城区行道树调查研究%An Investigation on Roadside Trees of Chancheng District of Foshan City

    Institute of Scientific and Technical Information of China (English)

    李洪斌; 陈李利; 周贱平; 钟惠红; 余凤英

    2007-01-01

    通过对佛山市禅城区205条道路的调查,结果表明,禅城区共应用了58种(含变种)乔木作行道树,其分别属26科44属,其中乡土树种占65.52%,常绿乔木占74.14%;47种生长良好;细叶榕(Ficusmicrocarpa )、芒果(Mangifera indica )、大叶榕(Ficus virens var.sublanceolata )、大花紫薇(Lagerstroemia speciosa)、垂叶榕(Ficus benjamina )、木棉(Bombax ceiba)、高山榕(Ficus altissima)、阴香(Cinnamomum burmanii )、白兰花(Michelia alba )以及红花羊蹄甲(Bauhinia blakeana )等10种乔木是禅城区行道树种群的骨干树种.

  13. Effect of leguminous lectins on the growth of Rhizobium tropici CIAT899.

    Science.gov (United States)

    de Vasconcelos, Mayron Alves; Cunha, Cláudio Oliveira; Arruda, Francisco Vassiliepe Sousa; Carneiro, Victor Alves; Bastos, Rafaela Mesquita; Mercante, Fábio Martins; do Nascimento, Kyria Santiago; Cavada, Benildo Sousa; dos Santos, Ricardo Pires; Teixeira, Edson Holanda

    2013-05-17

    Rhizobium tropici is a Gram-negative bacterium that induces nodules and fixed atmospheric nitrogen in symbiotic association with Phaseolus vulgaris (common bean) and some other leguminous species. Lectins are proteins that specifically bind to carbohydrates and, consequently, modulate different biological functions. In this study, the d-glucose/ d-mannose-binding lectins (from seeds of Dioclea megacarpa, D. rostrata and D. violacea) and D-galactose-binding lectins (from seeds of Bauhinia variegata, Erythina velutina and Vatairea macrocarpa) were purified using chromatographic techniques and evaluated for their effect on the growth of R. tropici CIAT899. All lectins were assayed with a satisfactory degree of purity according to SDS-PAGE analysis, and stimulated bacterial growth; in particular, the Dioclea rostrata lectin was the most active among all tested proteins. As confirmed in the present study, both d-galactose- and d-glucose/d-mannose-binding lectins purified from the seeds of leguminous plants may be powerful biotechnological tools to stimulate the growth of R. tropici CIAT99, thus improving symbiotic interaction between rhizobia and common bean and, hence, the production of this field crop.

  14. Effect of Leguminous Lectins on the Growth of Rhizobium tropici CIAT899

    Directory of Open Access Journals (Sweden)

    Mayron Alves de Vasconcelos

    2013-05-01

    Full Text Available Rhizobium tropici is a Gram-negative bacterium that induces nodules and fixed atmospheric nitrogen in symbiotic association with Phaseolus vulgaris (common bean and some other leguminous species. Lectins are proteins that specifically bind to carbohydrates and, consequently, modulate different biological functions. In this study, the d-glucose/ d-mannose-binding lectins (from seeds of Dioclea megacarpa, D. rostrata and D. violacea and D-galactose-binding lectins (from seeds of Bauhinia variegata, Erythina velutina and Vatairea macrocarpa were purified using chromatographic techniques and evaluated for their effect on the growth of R. tropici CIAT899. All lectins were assayed with a satisfactory degree of purity according to SDS-PAGE analysis, and stimulated bacterial growth; in particular, the Dioclea rostrata lectin was the most active among all tested proteins. As confirmed in the present study, both d-galactose- and d-glucose/d-mannose-binding lectins purified from the seeds of leguminous plants may be powerful biotechnological tools to stimulate the growth of R. tropici CIAT99, thus improving symbiotic interaction between rhizobia and common bean and, hence, the production of this field crop.

  15. 植物提取物对黄曲条跳甲成虫的忌避作用%Deterrent effects of extracts from non-preferable plants on the adult of striped flea beetle (SFB), Phyllotreta striolata (F.)

    Institute of Scientific and Technical Information of China (English)

    赖荣泉; 魏辉; 侯有明; 刘长明; 尤民生

    2004-01-01

    研究23种植物乙醇提取物,植物保护剂保卫德、15%烟碱在室内对黄曲条跳甲成虫的忌避活性.结果表明:处理后72 h,烟草Nicotiana tabacum、烟碱nicotinamide、艾蒿Artemisia argyi 、繁缕Stellaria media、羊蹄甲Bauhinia variegata乙醇提取物对黄曲条跳甲成虫的忌避效果最好,忌避率为84.45%-98.79%;花椒Zanthoxylum bungeanum、苦瓜Momordica charantia、构树Broussonetia papyrifera、莴苣Lactuca sativa乙醇提取物忌避效果最差,忌避率为41.89%-59.13%;其余提取物忌避效果居中,忌避率为40.35%-97.07%.

  16. 南方主要绿化树种对重金属的积累特性%Trees' Phytoextraction of Heavy Metals in the Soil of South China

    Institute of Scientific and Technical Information of China (English)

    张炜鹏; 陈金林; 黄全能; 王擎运; 赵好; 薛丹

    2007-01-01

    研究了南方主要绿化树种对重金属的积累特性,结果表明:同一树种中Pb、Cd、Hg、As的含量差异较大,相同元素在不同树种中的含量也存在一定差异,不同树种的重金属含量一般随环境污染程度的增加而升高,即从高至低依次为市区、近郊、远郊,市区树种中Pb、Cd、Hg、As的平均含量分别比远郊的增加62%、103%、187%、104%.垂枝榕(Ficus beniamina 'Exotica')、菩提树(F.religiosa)、凤凰木(Delonix regia)、南洋杉(Araucaria cunninghamii)分别对Pb、Cd、Hg、As的积累作用较大,宜用这些树木进行重金属污染的治理和修复,洋紫荆(Bauhinia variegata)、南洋杉、高山榕(F.altissima)、小叶榕(F.microcarpa)分别对Pb、Cd、Hg、As的抗性最小、即敏感性最强,可用于重金属污染的监测.

  17. Further characterization of some heterophile agglutinins reacting with alkali-labile carbohydrate chains of human erythrocyte glycoproteins.

    Science.gov (United States)

    Dahr, W; Uhlenbruck, G; Bird, G W

    1975-01-01

    The nature of the receptor sites for several agglutinins is characterized by hemagglutination inhibition assays. The inhibitory activity of human erythrocytes glycoproteins, from which sialic acid, sialic acid and galactose or alkali-labile oligosaccharides have been removed, is compared to the inhibitory effect of compounds with known structure. It is shown that the lectin from Arachis hypogea and anti-T bind to alkali-labile galactosyl-residues. Agglutinins from Bauhinia purpurea and variegata (non- or N-specific), Maclura aurantiaca, Iberis amara, sempervirens, umbellata hybrida and umbellata nana (M- or nonspecific), Moluccella laevis (A- plus N-specific), Helix pomatia, Helix aspersa, Helix lucorum and Caucasotachea atrolabiata interact with alkali-labile N-acetylgalactosamine. The results obtained with the anti-A agglutinins from various snails suggest that human erythrocyte glycoproteins contain, besides the alkali-labile tetrasaccharide, a peptide-linked sialyl-N-acetyl-galactosaminyl-residue. The investigations do not allow a precise definition of the receptor sites for the lectins having M- or N-specificity.

  18. A rapid RP-HPTLC densitometry method for simultaneous determination of major flavonoids in important medicinal plants.

    Science.gov (United States)

    Bhandari, Pamita; Kumar, Neeraj; Gupta, Ajai P; Singh, Bikram; Kaul, Vijay K

    2007-08-01

    A simple, sensitive, selective, precise, and robust high-performance TLC (HPTLC) method was developed and validated for determination of flavonoids in herbal extracts Bauhinia variegata, Bacopa monnieri, Centella asiatica, Ginkgo biloba, Lonicera japonica, Rosa bourboniana, Rosa brunonii, and Rosa damascena. The HPTLC of flavonoids was performed on RP-18 F(254) TLC plates with dual run, water (5% formic acid)/methanol (70:30) and water (5% formic acid)/methanol (50:50) as mobile phases. Densitometric determination of flavonoids was performed at lambda = 280 nm in reflectance/absorbance mode. The linear regression analysis data for the calibration plots showed a good linear relationship with r(2 )= 0.998 +/- 0.0003 in the concentration range of 150-800 ng/spot for apigenin and rutin and 200-1000 ng/spot for quercetin, luteolin, and quercitrin with respect to peak area. The average recovery for apigenin, quercetin, rutin, luteolin, and quercitrin was 97-99.8% indicating the excellent reproducibility. Statistical analysis of the data showed that the method is reproducible and selective for determination of flavonoids.

  19. The effect of medicinal plants of Islamabad and Murree region of Pakistan on insulin secretion from INS-1 cells.

    Science.gov (United States)

    Hussain, Zakir; Waheed, Abdul; Qureshi, Rizwana Aleem; Burdi, Dadu Khan; Verspohl, Eugen J; Khan, Naeema; Hasan, Mashooda

    2004-01-01

    In vitro testing of the extracts of medicinal plants collected from Islamabad and the Murree region on insulin secretagogue activity was carried out. Dried ethanol extracts of all plants (ZH1-ZH19) were dissolved in ethanol and DMSO, and tested at various concentrations (between 1 and 40 microg/mL) for insulin release from INS-1 cells in the presence of 5.5 mM glucose. Glibenclamide was used as a control. Promising insulin secretagogue activity in various plant extracts at 1, 10, 20 and 40 microg/mL was found, while in some cases a decrease in insulin secretion was also observed. Artemisia roxburghiana, Salvia coccinia and Monstera deliciosa showed insulin secretagogue activity at 1 microg/mL (p Bauhinia variegata and Bergenia himalacia showed effects at 20 microg/mL (p < 0.05), and Taraxacum officinale and Viburnum foetens at 40 microg/mL (p < 0.05). Insulin secretagogue activity could not be detected in the extracts of Adhatoda vasica, Cassia fistula, Chrysanthemum leucanthemum, Morus alba, Plectranthus rugosus, Peganum harmala and Olea ferruginea. The results suggest that medicinal plants of Islamabad and the Murree region of Pakistan may be potential natural resources for antidiabetic compounds.

  20. Studies on in vitro antioxidant and antistaphylococcal activities of some important medicinal plants.

    Science.gov (United States)

    Mishra, A; Kumar, S; Bhargava, A; Sharma, B; Pandey, A K

    2011-02-12

    Oxidative stress is initiated by free radicals, which seek stability through electron pairing with biological macromolecules in healthy human cells and cause protein and DNA damage along with lipid peroxidation. Many phytochemicals have been found to play as potential antioxidants and antimicrobials. In the present study antioxidant and antistaphylococcal activities of Bauhinia variegata, Tinospora cardifolia and Piper longum have been determined. Total phenolic contents in plant extracts were estimated and different amounts of phenolic contents were found in B. variegata, T. cardifolia and P. longum extracts. The antioxidant activity of the extracts was compared with standard antioxidants such as, BHA, BHT, quercetin, ascorbic acid and propyl gallate. The % scavenging activity gradually increased with increasing concentrations of the test extracts in DPPH radical scavenging assay. Dose dependent antioxidant activity pattern was also observed in phosphomolybdate assay. Antioxidant activity was directly correlated with the amount of total phenolic contents in the extracts. As compared to B. variegata, the extracts from other two plants exhibited higher antioxidant activity. In disc diffusion assays several solvent extracts derived from test plants inhibited the growth of Staphylococcus aureus. Maximum inhibitory efficacy was observed in T. cardifolia extracts. However, the lowest minimum bactericidal concentration (MBC) (0.43 mg/ml) was recorded for ethyl acetate and acetone extracts of P. longum. This study demonstrates notable antioxidant and anti-staphylococcal roles assigned to some plant extracts tested.

  1. Bioactive compounds extracted from Indian wild legume seeds: antioxidant and type II diabetes-related enzyme inhibition properties.

    Science.gov (United States)

    Gautam, Basanta; Vadivel, Vellingiri; Stuetz, Wolfgang; Biesalski, Hans K

    2012-03-01

    Seven different wild legume seeds (Acacia leucophloea, Bauhinia variegata, Canavalia gladiata, Entada scandens, Mucuna pruriens, Sesbania bispinosa and Tamarindus indica) from various parts of India were analyzed for total free phenolics, l-Dopa (l-3,4 dihydroxyphenylalanine), phytic acid and their antioxidant capacity (ferric-reducing antioxidant power [FRAP] and 2,2-diphenyl-1-picrylhydrazyl [DPPH] assay) and type II diabetes-related enzyme inhibition activitiy (α-amylase). S. bispinosa had the highest content in both total free phenolics and l-Dopa, and relatively low phytic acid when compared with other seeds. Phytic acid content, being highest in E. scandens, M. pruriens and T. indica, was highly predictive for FRAP (r = 0.47, p < 0.05) and DPPH (r = 0.66, p < 0.001) assays. The phenolic extract from T. indica and l-Dopa extract from E. scandens showed significantly higher FRAP values among others. All seed extracts demonstrated a remarkable reducing power (7-145 mM FeSO4 per mg extract), DPPH radical scavenging activity (16-95%) and α-amylase enzyme inhibition activity (28-40%).

  2. Litter decomposition in a gallery forest revegetation on São Francisco river basin, Minas Gerais State

    Directory of Open Access Journals (Sweden)

    Flávia Peres Nunes

    2012-09-01

    Full Text Available This work analyzed the litter decomposition rates registered in riparian native and reforested forest fragments, to test the hypothesis that the decomposition is dependent on the structural and the floristic composition of the vegetation. The work was carried out in the upper São Francisco River Basin from September 2001 to August 2002. The decomposition rate was measured by quantifying the monthly mass loss of 12 litterbags (20 x 20 cm containing five grams of dry leaf in each one and located randomly in the two fragments analyzed. Mass loss kinetics was faster in the native forest, reaching the T50% in 5 months (02/2002 while loss in the reforested area was 30% during the same period. This could be reflecting the successional stage characteristic of each fragment and the local climate since the conditions at the native forest (close canopy, less luminosity, higher humidity and cooler constant temperatures favor the proliferation of microorganisms. This can also be due to differences in floristic composition since the reforested area presents reduced species diversity, with a dominance of Bauhinia variegata L. In addition, the native riparian forest fragment presented higher levels of organic matter content which could contribute to accelerate the litter decomposition rates in this fragment.

  3. Influence of Secondary Plant Metabolites on the Insecticidal Activity of Bacillus thuringiensis%植物提取物对苏云金芽孢杆菌杀虫活性的影响

    Institute of Scientific and Technical Information of China (English)

    魏辉; 王前梁; 侯有明; 尤民生

    2003-01-01

    植物提取物对苏云金芽孢杆菌Bacillus thuringiensis(Bt)的杀虫活性有不同程度的影响.试验结果表明,处理48 h后,花椒Zanthoxylum bungeanum、假连翘Duranta repens、南洋楹Albizia falcataria、羊蹄甲Bauhinia variegata、番石榴Psidium guajava、荷花玉兰Magnolia grandiflora的乙醇提取物对Bt的杀虫活性有显著增效作用;小蜡Ligustrum sinense、胜红蓟Ageratum conyzoides、一品红Euphorbia pulcherrima、烟草Nicotiana tabacum、南洋杉Araucaria cunninghamii、繁缕Stellaria media、光叶子花Bougainvillea glabra、小飞蓬Conyza canadensis、地肤Kochia scoparia的乙醇提取物对Bt杀虫活性有显著拮抗作用;其他植物提取物则没有显著影响.

  4. Isoflavones hydrolisis and extraction

    Directory of Open Access Journals (Sweden)

    Jozilene Fernandes Farias dos Santos

    2012-12-01

    Full Text Available Isoflavones are found in leguminous species and are used as phytoestrogens widely used by industry for its beneficial effects as estrogens mimicked, antioxidant action and anti-cancer activity. The identification and quantification of isoflavones in plants is a need due to the high demand of industry. Several methods are used for its extraction, using organic solvents (methanol, ethanol and acetonitrile. Samples from five legumes species from Instituto de Zootecnia (IZ, Forage Gene Bank were tested. All seeds received a hydrothermic treatment immersed in pure water at 50°C for 12 hours. Seeds were then oven-dryed. In this work we tested the extraction using only the hydrothermic treatment and hyfrothermic treatment allied to methanol extaction protocol. Seeds were grinded and half of the samples were ressuspended in PBS (phosphate Buffer and the other half were submited to 4 mL of methanol and 1% of acetic acid, soaked for 5 hours, shaked every 15 minutes, at room temperature. The five legume species that we quantify isoflavones by enzyme immunoassay (EIA were: Calopogonium mucunoides, Bauhinia sp., Cajanus cajan, Galactia martii, Leucaena leucocephala. The extraction procedure is a recomendation of AOAC (Association of Official Analytical Chemists for isoflavone quantification. Ours results show an increase of extraction using methanol 80% plus acetic acid 1% and was obtained using solvent extraction in comparison to hydrothermic procedure alone (figure 1.

  5. FLORÍSTICA E FITOSSOCIOLOGIA DE QUATRO REMANESCENTES VEGETACIONAIS EM ÁREAS DE SERRA NO CARIRI PARAIBANO

    Directory of Open Access Journals (Sweden)

    PEDRO THIAGO BARBOSA DE OLIVEIRA

    2009-01-01

    Full Text Available It was studied vegetal remainders into four mountain areas: Serra de Bodopitá (Area1, Serra de Bodocongó (Area 2, Serra do Monte (Area 3 and Serra do Canoió (Area 4 located in paraiban Cariri. The study aimed at determines the phytossociolical parameters and for this was used the program Mata Nativa 2. It was also calculated the indexes of Shannon, Pielou equability, diversity of species and families. From the 2972 sampled individuals, 633 belonged to Area 1, 602 to Area 2, 908 to Area 3 and 829 to Area 4. All of them were distributed in 54 species belonged to 25 botanic families. It was observed that the families Fabaceae and Euphorbiaceae had the largest number of species and individuals and after them Cactaceae, Anacardiaceae and Apocynaceae. The Shannon indexes values in Areas 1, 2, 3 and 4 were respectively 2.65; 2.93; 2.35 e 2.59 nats.esp.-1 . The founded densities were 3165 individuals.ha-1 in Area 1, 3010 individuals.ha-1 in Area 2, 4540 individuals.ha-1 in Area 3 and 4145 individuals.ha-1 in Area 4. The four areas had the same species with the most importance values being them: Caesalpinia pyramidalis, Aspidosperma pyrifolium, Bauhinia cheilantha, Piptadenia stipulacea.

  6. Effect of Algae and Plant Lectins on Planktonic Growth and Biofilm Formation in Clinically Relevant Bacteria and Yeasts

    Science.gov (United States)

    Vasconcelos, Mayron Alves; Arruda, Francisco Vassiliepe Sousa; Carneiro, Victor Alves; Silva, Helton Colares; Nascimento, Kyria Santiago; Sampaio, Alexandre Holanda; Cavada, Benildo; Teixeira, Edson Holanda; Henriques, Mariana

    2014-01-01

    This study aimed to evaluate the abilities of plant and algae lectins to inhibit planktonic growth and biofilm formation in bacteria and yeasts. Initially, ten lectins were tested on Staphylococcus epidermidis, Staphylococcus aureus, Klebsiella oxytoca, Pseudomonas aeruginosa, Candida albicans, and C. tropicalis at concentrations of 31.25 to 250 μg/mL. The lectins from Cratylia floribunda (CFL), Vatairea macrocarpa (VML), Bauhinia bauhinioides (BBL), Bryothamnion seaforthii (BSL), and Hypnea musciformis (HML) showed activities against at least one microorganism. Biofilm formation in the presence of the lectins was also evaluated; after 24 h of incubation with the lectins, the biofilms were analyzed by quantifying the biomass (by crystal violet staining) and by enumerating the viable cells (colony-forming units). The lectins reduced the biofilm biomass and/or the number of viable cells to differing degrees depending on the microorganism tested, demonstrating the different characteristics of the lectins. These findings indicate that the lectins tested in this study may be natural alternative antimicrobial agents; however, further studies are required to better elucidate the functional use of these proteins. PMID:24982871

  7. HEALTH AND NUTRITION FROM ORNAMENTALS

    Directory of Open Access Journals (Sweden)

    Sharma Yashaswini

    2011-02-01

    Full Text Available Ornamental plants are grown for decorative purposes in gardens and landscape design projects, as house plants, for cut flowers and specimen display. Ornamentals and flower crops are not only grown for the display of aesthetic features, but also have some nutritive and medicinal properties. There has been renewed interest in utilizing garden environments as thera¬peutic entities to enhance the process of healing that occurs in healthcare environments. By minimizing the stress response, therapeutic gardens can promote re¬covery from illness or preserve health. From centuries roses have been valued for their culinary, medicinal, cosmetic and aromatic properties. Flower crops like Hibiscus, Plumbago, Periwinckle, and Lotus are highly valued for their medicinal use as in cosmetics, skin disorders, cancer etc. ornamental tree species like Palash, Amaltas, Bauhinia, Asoca, Kadamba are used in traditional Ayurvedic of medicines. Many of the flower crops such as nasturtium, hibiscus, rose, cosmos, and chrysanthemum are rich in minerals and vitamins, used as edible flowers. Some of the flowers like rose, jasmine, lavender and tuberose are used for extraction of essential oils. They are having soothing and curative properties and are used in aromatherapy. An attempt was made to collect the reviews on the therapeutic properties of these ornamentals.

  8. Seed germination of three species of Fabaceae typical of seasonally dry forest

    Directory of Open Access Journals (Sweden)

    Daniel Meira Arruda

    2015-06-01

    Full Text Available This study evaluates seeds germination of Anadenanthera colubrina, Acacia polyphylla and Bauhinia cheilantha, typical species of deciduous forests. Seeds were submitted to pre-germination treatments and attack of native insects. The seeds of each species were grouped in: seeds scarified with sandpaper; seeds immersed in water heated to 70 °C, seeds with signs of attack by herbivore insects and the control group. The largest proportion of germinated seeds occurred in the first week of incubation and germination peak, ranged from first to third day. All groups of A. polyphylla and B.cheilantha showed high germination rate (> 90%, being reduced only when seeds were attacked by insects (< 25%. Mechanic scarification was efficient in A. polyphylla by enhancing germination to maximum (100% and accelerating germination. A. colubrina showed no difference among groups, and germination rate was lower (< 50%, which was attributed to infestation by fungi, commonly reported in this species and apparently independent of usual hygiene procedures. Finally, except the fungi infestation in A. colubrina, evaluated species were independent of pre-germination treatment to obtain a high rate of germination.

  9. Biodiversity of roadside plants and their response to air pollution in an Indo-Burma hotspot region: implications for urban ecosystem restoration

    Directory of Open Access Journals (Sweden)

    Prabhat Kumar Rai

    2016-03-01

    Full Text Available In recent Anthropocene, biodiversity of urban roadside plants is now increasingly being realized as an eco-sustainable tool for monitoring and mitigation of air pollution. The present study aimed to investigate the impact of particulate matter (PM pollutants on leaf morphology (stomata, biochemical (heavy metals, protein, and sugars parameters and enzyme activity (peroxidase and catalase of 12 common roadside plant species, growing at two different sites of Aizawl City, i.e. the Ramrikawn (RKN-Med; polluted peri-urban site and the Mizoram University (MZU-Low; less polluted rural site. The highest dust deposition was noted for the RKN-Med site on Ficus benghalensis and the lowest in Bauhinia variegate. The plant species growing at the RKN-Med site showed significant decreases in stomatal size and stomatal index (p ˂ 0.05. Further, increased concentration of heavy metals (Fe, Cu, and Zn was recorded at the RKN-Med site. Moreover, tolerant roadside plants find their suitability for plantation in ecologically sensitive regions, having implications for urban ecosystem restoration.

  10. LEVANTAMENTO FITOSSOCIOLÓGICO EM ÁREA DE CAATINGA NO MONUMENTO NATURAL GROTA DO ANGICO, SERGIPE, BRASIL

    Directory of Open Access Journals (Sweden)

    RAPHAEL CAVALCANTI FERRAZ

    2013-01-01

    Full Text Available The Caatinga is a vegetation that occurs exclusively in Brazil, typically in the Northeastern region and studies on the floristic composition and phytosociological are prerequisites for understanding the behavior, distribution and structure of the vegetation. Therefore, this study aimed to conduct a phytosociological survey of an area approximately 191 hectares of Caatinga, located within of the Unity Conservation area Grota do Angico Natural Monument, Sergipe state, Brazil. To conduct this study, we used the method of fixed area and the process of systematic sampling, where all individuals included in the 30 plots that showed CAP (circumference at breast height greater than 6 cm were measured. In total of the survey, we identified 24 species in 20 genres and 12 families. The families with the higher number of species were Fabaceae, Euphorbiaceae e Anacardicaceae. Poincianella pyramidalis (Tul. L. P. Queiroz, Jatropha mollissima (Pohl. Baill., Bauhinia cheilantha, Anadenanthera colubrina (Vell. Brenan. and Mimosa tenuiflora were the most representative species for the phytosociological indices (density, cover, frequency and important value index. The basal area at the study site was 6,95 m2 ha-1 and the volume 28,42 m3 ha-1.

  11. 5'-NUCLEOTIDASES OF NAJA NAJA KARACHIENSIS SNAKE VENOM: THEIR DETERMINATION, TOXICITIES AND REMEDIAL APPROACH BY NATURAL INHIBITORS (MEDICINAL PLANTS).

    Science.gov (United States)

    Bin Asd, Muhammad Hassham Hassan; Iqbal, Muhammad; Akram, Muhammad Rouf; Khawaja, Naeem Raza; Muneer, Saiqa; Shabbir, Muhammad Zubair; Khan, Muhammad Saqib; Murtaza, Ghulam; Hussain, Izhar

    2016-01-01

    Present study was carried out regarding enzymatic assay for 5'-nucleotidase enzymes present in snake venom Naja naja karachiensis and to evaluate twenty eight medicinal plants as their antidotes. Elevated enzymatic activities i.e., 119, 183, 262 and 335 U/mL were observed in 10, 20, 30 and 40 µg of crude venom, respectively, in dose dependent manner. Among various plant extracts only two (Bauhinia vaiiegate L. and Citms linion (L.) Burm. f.) were found 94% effective at 160 µg to neutralize 112 U/mL activities (p 0.5) while reference standard was proved 93.2% useful at 80 pg to halt 111 U/mL activities. Cedrus deodara G. Don, Enicostemna hyssopifolium (Willd.) Verdoom, Terminalia arjuma Wight & Am. and Zingiber officinalis Rosc. (at 160 µg) were found ≥90% effective (0.5 ≥ p ≥ 0.1) while Citrulus colocynthis, Fogonia cretica L., Rhazya stticta Dcne and Stenolobiun stans (L.) D. Don (at 320 µg) were proved 90% effective (0.05 ≥ p ≥ 0.02). The remaining plant extracts were observed abortive (p ≥ 0.001) in neutralization of 5'-nucleotidases enzymatic actions. This study emphasizes further characterization of active plant extracts to further explore the antivenom influences of these herbal remedies against deleterious effects produced by 5'-nucleotidase enzymes after snake bite envenomation.

  12. Plant species visited by the Horned Sungem Heliactin bilophus (Aves, Trochilidae at Chapada dos Veadeiros, during the rainy season

    Directory of Open Access Journals (Sweden)

    Gabriel Baruffaldi Ghiringhello

    2009-12-01

    Full Text Available The feeding habits of the Horned Sungem remain little known. This study aimed to identify the plant species most often visited by H. bilophus with feeding purposes (consumption of nectar during the rainy season at Chapada dos Veadeiros National Park, Goiás. Observations were made during two rainy seasons (January 2006 and February 2008. The methodology consisted of walking through trails within two areas of campo sujo and two areas of campo rupestre. The record of an individual consuming the nectar of a flowering plant was considered to constitute a visit. A total of 296 visits were observed, comprising eight species of shrubs and herbs. The most often visited plant species were Bauhinia tenella (Caesalpinoideae and Vochysia pumila (Vochysiaceae in campo sujo, and Lychnophora ericoides (Asteraceae in campo rupestre. These three species were commonly found at the study sites. In both physiognomies, Heliactin bilophus consumed the nectar of few plant species. The most frequently visited species bore high numbers of flowers.

  13. COMPARATIVE EVALUATION OF HYPOGLYCEMIC EFFECTS OF TWO DIFFERENT PARTS OF BAUHUNIA PURPUREA LINN. PLANT IN STZ-INDUCED DIABETIC ALBINO WISTAR RATS

    Directory of Open Access Journals (Sweden)

    A. K. Brahmachari

    2015-12-01

    Full Text Available The present work was undertaken to study the comparative phytochemical profiles and hypoglycemic effects of Bauhinia purpurea Linn. Barks (BPBE and leaves ethanolic extracts (BPLE in albino wistar rats to validate their ethno medical use in hyperglycemia as well as to explore the better option. Phytochemicals in ethanolic extracts were analyzed by standard natural product chemistry methods. Diabetes was developed in rats by single intraperitoneal injection of Streptozotocin @ 60mg/ Kg bw. Diabetic albino wister rats (n=3 of either sex (150-200gm bw were orally fed with the extracts once daily for 4 weeks. Glibenclamide @ 0.5mg/Kg bw was used as a positive control for comparison. Fasting blood glucose level at 0, 14th and 28th day and hemoglobin and glycosylated hemoglobin on 28th day of experiment were analyzed. Our results show that the extracts contain alkaloids, flavonoids, glycosides, terpenoids, tannins and phenolics. Rats treated with plant extracts show better glucose modulation, decreased hemoglobin glycosylation and improved hemoglobin concentration as compared to diabetic control. The hypoglycemic effect of only BPBE at 420 mgkg-1 on 14th and 28th day is comparable to that of standard drug glibenclamide (P>0.01. The bark extract has been observed to be more potent hypoglycemic agent than leave extract.

  14. Pregnancy-related changes in the mouse oviduct and uterus revealed by differential binding of fluoresceinated lectins.

    Science.gov (United States)

    Lee, M C; Wu, T C; Wan, Y J; Damjanov, I

    1983-01-01

    The binding of 20 fluorescein isothiocyanate (FITC)-labeled lectins to various portions of the pregnant and non-pregnant murine oviduct and uterus was studied by fluorescence microscopy. Five lectins (from Ricinus communis (RCA-I), Maclura pomifera (MPA), Triticum vulgare (wheat germ-WGA), Bauhinia purpurea (BPA), and Ulex europeus (UEA-I] reacted differentially with the epithelium of pregnant as compared with the non-pregnant uterus. The binding of RCA-I, MPA and WGA delineated pregnancy-related changes in the distal oviduct and colliculus tubaris. WGA recognized also pregnancy related changes in the proximal oviduct. The reactivity of the remaining 15 lectins did not distinguish the pregnant and non-pregnant oviduct and uterus, although some of them served to identify specific components of the mouse genital tract. Thus, Soybean lectin (SBA) reacted almost exclusively with the colliculus tubaris. UEA-I alone reacted exclusively with the epithelium of the non-pregnant uterus. RCA-II reacted preferentially with the epithelium of the oviduct and uterus as compared with its weak reactivity with the stroma. Two lectins (from Pisum sativum and Lens culinaris) reacted selectively with stromal cells of the uterus and oviduct. Present data indicate that the differential binding properties of these FITC-labeled lectins can be exploited to identify certain components of the mouse oviduct and uterus and to indicate changes in the cell surface and/or cytoplasm in these structures during pregnancy.

  15. Interaction of native and asialo rat sublingual glycoproteins with lectins.

    Science.gov (United States)

    Wu, A M; Herp, A; Song, S C; Wu, J H; Chang, K S

    1995-01-01

    The binding properties of the rat sublingual glycoprotein (RSL) and its asialo product with lectins were characterized by quantitative precipitin(QPA) and precipitin inhibition(QPIA) assays. Among twenty lectins tested for QPA, native RSL reacted well only with Artocarpus integrifolia (jacalin), but weakly or not at all with the other lectins. However, its asialo product (asialo-RSL) reacted strongly with many Gal and GalNAc specific lectins-it bound best to three of the GalNAc alpha 1-->Ser/Thr (Tn) and/or Gal beta 1-->4GlcNAc (II) active lectins [jacalin, Wistaria floribunda and Ricinus communis agglutinins] and completely precipitated each of these three lectins. Asialo-RSL also reacted well with Abrus precatorius, Glycine max, Bauhinia purpurea alba, and Maclura pomifera agglutinins, and abrin-a, but not with Arachis hypogeae and Dolichos biflorus agglutinins. The interaction between asialo-RSL and lectins were inhibited by either Gal beta 1-->4GlcNAc, p-NO2-phenyl alpha-GalNAc or both. The mapping of the precipitation and inhibition profiles leads to the conclusion that the asialo rat sublingual glycoprotein provides important ligands for II (Gal beta 1-->4GlcNAc beta 1-->) and Tn (GalNAc alpha 1-->Ser/Thr) active lectins.

  16. Interaction of a human blood group Sd(a-) Tamm-Horsfall glycoprotein with applied lectins.

    Science.gov (United States)

    Wu, J H; Watkins, W M; Chen, C P; Song, S C; Wu, A M

    1996-04-22

    Unlike the human blood group Sd(a+) Tamm-Horsfall glycoprotein (THGP), the Sd(a-) one lacks terminal GalNAcbeta1--> residues at the nonreducing ends. The binding properties of this glycoprotein and its asialo product with lectins were characterized by quantitative precipitin (QPA) and precipitin inhibition assays. Among 20 lectins tested by QPA, both native and asialo Sd(a-) THGP reacted best with Abrus precatorius and Ricinus communis and completely precipitated the lectin added. They also precipitated well Wistaria floribunda (WFA), Glycine max (SBA), Bauhinia purpurea alba, abrin-a and ricin, all of which recognize the Galbeta1--> 4GlcNAcbeta1--> sequence, although at different strength. The lectin-glycan interactions were inhibited by Galbeta1--> 4GlcNAc and Galbeta1--> 4Glc. When the precipitability of Sd(a-) THGP was compared with that of the Sd(a+) phenotype, the native Sd(a-) THGP exhibited a 40% lesser affinity for WFA, SBA, WGA and mistletoe lectin-I (ML-I). Mapping the precipitation and inhibition profiles of the present study and the results of THGP Sd(a+), it is concluded that Sd(a-) THGP showed a strongly diminished affinity for GalNAcbeta1--> active lectins (SBA and WFA) than the Sd(a+) phenotype.

  17. Scent glands in legume flowers.

    Science.gov (United States)

    Marinho, C R; Souza, C D; Barros, T C; Teixeira, S P

    2014-01-01

    Scent glands, or osmophores, are predominantly floral secretory structures that secrete volatile substances during anthesis, and therefore act in interactions with pollinators. The Leguminosae family, despite being the third largest angiosperm family, with a wide geographical distribution and diversity of habits, morphology and pollinators, has been ignored with respect to these glands. Thus, we localised and characterised the sites of fragrance production and release in flowers of legumes, in which scent plays an important role in pollination, and also tested whether there are relationships between the structure of the scent gland and the pollinator habit: diurnal or nocturnal. Flowers in pre-anthesis and anthesis of 12 legume species were collected and analysed using immersion in neutral red, olfactory tests and anatomical studies (light and scanning electron microscopy). The main production site of floral scent is the perianth, especially the petals. The scent glands are distributed in a restricted way in Caesalpinia pulcherrima, Anadenanthera peregrina, Inga edulis and Parkia pendula, constituting mesophilic osmophores, and in a diffuse way in Bauhinia rufa, Hymenaea courbaril, Erythrostemon gilliesii, Poincianella pluviosa, Pterodon pubescens, Platycyamus regnellii, Mucuna urens and Tipuana tipu. The glands are comprised of cells of the epidermis and mesophyll that secrete mainly terpenes, nitrogen compounds and phenols. Relationships between the presence of osmophores and type of anthesis (diurnal and nocturnal) and the pollinator were not found. Our data on scent glands in Leguminosae are original and detail the type of diffuse release, which has been very poorly studied.

  18. Efficacy of Some Botanical Extracts against Trogoderma granarium in Wheat Grains with Toxicity Evaluation

    Directory of Open Access Journals (Sweden)

    Aly S. Derbalah

    2012-01-01

    Full Text Available In an attempt to find alternative control methods for stored products insects, extracts of seven plant species (Cassia senna, Caesalpinia gilliesii, Thespesia populnea var. acutiloba, Chrysanthemum frutescens, Euonymus japonicus, Bauhinia purpurea, and Cassia fistula were evaluated under laboratory conditions for their ability to protect wheat (Triticum spp. grains against Trogoderma granarium insect. Moreover, gas chromatography-mass spectrometry (GC-MS analysis was carried to identify the chemical components of the most effective plant extract against T. granarium. Furthermore, the safety of the most effective plant extract was evaluated with respect to biochemical and histological changes in treated rats relative to control. The results revealed that, the tested botanical extracts showed high efficiency against T. granarium with respect to mortality and progeny of the adults. C. senna was the most effective botanical extract against T. granarium. The GC-MS analysis of the most effective plant extract showed the presence of different bioactive compounds that is known by its insecticidal activity. The most effective plant extract showed no toxicity on treated rats relative to control with respect to biochemical and histological changes. The results suggest the ability of using these plant extracts for wheat grains protection as a safe alternative to insecticides.

  19. Occurrence, distribution, and source of polybrominated diphenyl ethers in soil and leaves from Shenzhen Special Economic Zone, China.

    Science.gov (United States)

    Qin, Pei-Heng; Ni, Hong-Gang; Liu, Yang-Sheng; Shi, Ye-Hong; Zeng, Hui

    2011-03-01

    Polybrominated diphenyl ethers (PBDEs) were measured in soil and three plant species samples taken at different land use areas in Shenzhen China. The concentrations of Σ(7)BDEs (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, and BDE-183) and BDE-209 in the surface soils ranged from 0.23 to 271 and 8.9 to 5,956 ng/g dry weight (dw), respectively. These figures are comparable to that in the soils of electronic waste dismantling sites. BDE-209 was the predominant congener (contributes 85-99% of Σ(8)PBDEs (Σ(7)PBDEs plus BDE-209)) in soils. The regression slopes of total organic carbon and individual BDE congeners were rather gentle, indicating that factors other than soil organic matter regulated the soil concentrations. Proximity to sources of deposition processes might be the major factors. In the plant leaves, Σ(7)BDEs and BDE-209 concentrations ranged from 1.29 to 5.91 and 5.49 to 28.2 ng/g dw, respectively. BDE-209 is also the dominant component, but the contribution was much lower compared with that in soils. Bauhinia purpurea Linn. and Michelia alba DC. show some similarities on the uptake of PBDEs, while Ficus microcarpa var. pusillifolia is different from them. The correlations between plant leaf concentrations and predicted gaseous concentrations were moderate, indicating that gaseous concentration did not influence the leaf concentration significantly.

  20. In vitro and in vivo evaluation of efficacy and safety of photoprotective formulations containing antioxidant extracts

    Directory of Open Access Journals (Sweden)

    Maria Cristina P.P. Reis Mansur

    2016-04-01

    Full Text Available ABSTRACT Chronic exposure to solar radiation could contribute to premature skin aging and skin cancer. Skin presents its own antioxidant defense, however when defenses are out of balance, reactive oxygen species could damage biological structures. In the present work, an oil-in-water photoprotective emulsion was developed and Bauhinia microstachya var. massambabensis Vaz, Fabaceae, extracts at 1% (obtained by extraction with different solvents were added to this emulsion. In vitro and in vivo efficacy and safety of the formulations were evaluated. Spectrophotometric methods and in vivo Colipa test were performed to evaluated efficacy of the formulations, through sun protection factor (SPF determination and UVA protection factor assessment. To the in vitro safety assessment HET-CAM, CAM-TBS and Red Blood Cell tests were performed. Results showed that both extracts contributed to a higher in vivo photoprotection (SPF 18 when compared to the formulation without extract (SPF 13, this result could be attributed to the antioxidant activity of the plant extracts that act by capturing reactive oxygen species. Concerning safety, all formulations were considered non-irritant according to in vitro tests. Formulations containing extracts could be considered efficient and safe for cosmetic use since they presented higher sun protection factor and passed the toxicity tests.

  1. Identification and classification of silks using infrared spectroscopy.

    Science.gov (United States)

    Boulet-Audet, Maxime; Vollrath, Fritz; Holland, Chris

    2015-10-01

    Lepidopteran silks number in the thousands and display a vast diversity of structures, properties and industrial potential. To map this remarkable biochemical diversity, we present an identification and screening method based on the infrared spectra of native silk feedstock and cocoons. Multivariate analysis of over 1214 infrared spectra obtained from 35 species allowed us to group silks into distinct hierarchies and a classification that agrees well with current phylogenetic data and taxonomies. This approach also provides information on the relative content of sericin, calcium oxalate, phenolic compounds, poly-alanine and poly(alanine-glycine) β-sheets. It emerged that the domesticated mulberry silkmoth Bombyx mori represents an outlier compared with other silkmoth taxa in terms of spectral properties. Interestingly, Epiphora bauhiniae was found to contain the highest amount of β-sheets reported to date for any wild silkmoth. We conclude that our approach provides a new route to determine cocoon chemical composition and in turn a novel, biological as well as material, classification of silks.

  2. The New World Gibbobruchus Pic (Coleoptera, Chrysomelidae, Bruchinae): description of a new species and phylogenetic insights into the evolution of host associations and biogeography.

    Science.gov (United States)

    Manfio, Daiara; Jorge, Isaac R; Morse, Geoffrey E; Ribeiro-Costa, Cibele S

    2016-04-18

    The seed beetle Gibbobruchus tridentatus Manfio, Jorge & Ribeiro-Costa sp. nov. is described from the Amazon basin in Brazil (Acre) and Ecuador (Napo), and is included in an updated key to the species of Gibbobruchus Pic. This new species and the recently described G. bergamini Manfio & Ribeiro-Costa are incorporated into a phylogenetic reanalysis of the genus and into a comparative analysis of host plant use and biogeography. Species groups previously proposed were supported and the evolutionary history in host plant-use shows Gibbobruchus conserved at tribe level, Cercideae (Caesalpinioideae), with coordination between biogeographic expansion and host genus shifts. Both species, Gibbobruchus tridentatus Manfio, Jorge & Ribeiro-Costa sp. nov. and G. bergamini, were placed within the group scurra (G. tridentatus (G. scurra (G. cavillator+G. bolivianus+G. bergamini))) and supported by one synapomorphy. Additionally, we update geographic distributions and host plant records. Two hosts, Bauhinia argentinensis Burkart and B. tarapotensis Benth. are recorded for the first time as hosts for the genus and for the subfamily.

  3. ETHNOBOTANY OF THARUS OF DUDHWA NATIONAL PARK, INDIA

    Directory of Open Access Journals (Sweden)

    Bharati K Avinash

    2013-01-01

    Full Text Available Tharus are inhabited on southern foothills of the Himalayas along Indo-Nepal border. They have been using many plant species to meet their day-to-day needs. The aim of this study was to collect information on the traditional uses of different plants and to document the potential economic use of these plants. Fieldwork was conducted over a period of two years in Dudhwa National Park, utilizing the “transect walk” method of Participatory Rural Appraisal (PRA. The data was analyzed using the following techniques: frequency of citation and informant consensus factor (Fic. The present communication gives information on 86 species belonging to 38 families of plants used by Tharu tribes of Dudhwa National Park, Uttar Pradesh. The frequency of citation was very high for Alstonia scholaris (fire-wood, Antidesma acidum, Artocarpus lakoocha (edible, Bauhinia vahlii, Butea monosperma (food plate, Dendrocalamus strictus (hut preparation, Hibiscus cannabinus (rope, Oryza rufipogon (food, Phoenix acaulis (edible and Tamarix dioica (broom.

  4. A REVIEW ON ANTIULCER MEDICINAL PLANTS

    Directory of Open Access Journals (Sweden)

    Kamble Rahul Devidas

    2013-01-01

    Full Text Available Peptic ulcer is the most common gastrointestinal disorder in clinical practice. Peptic ulcer is a conglomerate of heterogeneous disorders, which manifests itself as a break in the lining of the gastrointestinal mucosa bathed by acid and/or pepsin. A number of drugs including proton pump inhibitors and H2 receptor antagonists are available for the treatment of peptic ulcer, but these drugs has shown incidence of relapses, side effects, and drug interactions. Thus the development of new antiulcer drugs and the search for novel molecules has been extended to herbal drugs that offer better protection and decreased relapse. Medicinal plants provide an effective and safer way in disease management. Many medicinal plants exhibit antiulcer activity and found useful in the treatment of peptic ulcer. In this review attempts have been made to know about some plants which may be used in treatment or prevention of peptic ulcer. Various plants like Nerium indicum, Ocimum sanctum, Argyreia speciosa, Bauhinia purpurea, Benincasa hispida and Croton zambesicus proved active in antiulcer therapy.

  5. Oxigenação extracorpórea por membrana em cães sem auxílio circulatório

    Directory of Open Access Journals (Sweden)

    Alessandra Castello da Costa

    2014-05-01

    Full Text Available A oxigenação extracorpórea por membrana com desvio arterio-venoso (AV-ECMO, em seres humanos, é uma técnica de suporte à vida capaz de assumir em parte ou totalmente as funções dos pulmões, quando estes já não são capazes de promover uma adequada hematose. Para conhecer a viabilidade deste método em cães (Canis familiaris, o presente estudo aplicou a AV-ECMO em dez indivíduos adultos, sem raça definida, com uma expectativa de três horas de duração para cada experimento. No grupo 1 (n=4, ventilação mecânica e infusão contínua de dopamina foram associadas ao suporte extracorpóreo. No grupo 2 (n=6, nenhuma medida de terapia intensiva foi instituída concomitantemente à AV-ECMO. O comportamento dos parâmetros de gasometria e os níveis de lactato foram avaliados a cada 10 minutos e 1 hora, respectivamente, por meio de da avaliação de amostras sanguíneas arteriais. O suporte inotrópico foi capaz de promover uma melhor perfusão tecidual com sangue oxigenado, sugerida pelos níveis de lactato e pressão arterial média mensurados, assim como a hemogasometria revelou melhores resultados quando a ventilação mecânica foi utilizada simultaneamente à AV-ECMO. Portanto, aplicada conjuntamente com suporte da terapia intensiva, a AV-ECMO é uma técnica viável para o uso em cães com falência respiratória, refratária aos tratamentos convencionais.

  6. Redução da atividade proteolítica da dentina após curtos períodos de aplicação de proantocianidina

    Directory of Open Access Journals (Sweden)

    Cláudia Cristina DELGADO

    Full Text Available ResumoIntroduçãoAgentes promotores de ligações cruzadas têm sido investigados como inibidores da atividade enzimática da dentina, o que favoreceria a longevidade das restaurações adesivas.ObjetivoAvaliar o efeito do tratamento da dentina com proantocianidina (PA, em curtos períodos de tempo, na inibição da atividade de MMPs in situ.Material e métodoQuarenta espécimes de dentina (1×1×6 mm foram obtidos de molares hígidos e divididos em quatro grupos (n=10. Os espécimes foram condicionados com ácido fosfórico por 15 s, seguido de lavagem em água deionizada. A dentina condicionada foi tratada com: água, 5% PA por 5 s, 15 s ou 30 s. A atividade de MMP foi analisada colorimetricamente (SensoLyte® e os dados de absorbância (412 nm foram submetidos aos testes de ANOVA e Tukey (α=0,05.ResultadoTodos os períodos de tratamento foram capazes de reduzir a atividade de MMPs, sendo que os melhores resultados foram observados para a dentina tratada com PA por 15 s (63,1% redução e 30 s (70,2%. O tratamento por 5 s foi capaz de inibir 39,9% das MMPs.ConclusãoA aplicação de PA sobre a dentina condicionada foi capaz de reduzir a atividade de MMPs mesmo em períodos de tempo extremamente curtos, como 5 s. No entanto, melhores resultados foram obtidos com os maiores períodos de tratamento.

  7. Homo capax

    Directory of Open Access Journals (Sweden)

    Patricio Mena Malet

    2011-01-01

    Full Text Available El presente ensayo intenta reflexionar sobre algunas características estructurales del homo capax tal como ha sido pensado por Ricoeur de modo explícito a partir de su obra de 1990, Soimême comme un autre. Así, lo que interrogaremos no son las capacidades que Ricoeur analiza a partir de 1990, poder actuar, decir, narrar y narrarse, y considerarse imputable de las consecuencias de sus acciones, sino el ser capaz mismo. ¿Qué significa ser capaz? ¿Se trata como lo afirma el propio Ricoeur de un carácter esencial de la humanidad del hombre? ¿Es un a priori por tanto? La tesis que quisiéramos defender son, primero que el trasfondo de la capacidad es su ser en relación y la pasibilidad, y segundo que solo en el encuentro con lo otro el ser capaz estiliza sus poderes con los que se abrirá al mundo.This essay aims to reflect on some structural characteristics of the homo capax as it has been explicitly conceived by Ricoeur since his 1990 work, Soimême comme un autre. What we examine are not the capabilities that Ricoeur analyzes starting in 1990, to be able to act, speak, narrate, and be narrated, and to be regarded as attributable to the consequences of one's actions, but rather the capable human being itself. What does it mean to be capable? Is it, as Ricoeur himself says, part of the essential nature of man's humanity? Is it therefore a priori? The thesis that we would like to defend is that, first, the background of capability is man's being in relation and passibility, and second, only in encounters with the other does the capable human being stylize the powers with which it opens the world.

  8. La comunicación empresarial en situaciones de crisis. Estudio de caso: La crisis de Fontaneda

    OpenAIRE

    Enrique, Ana Ma.

    2007-01-01

    Descripció del recurs: el 21 de juliol de 2008 Títol obtingut de la portada digitalitzada Consultable des del TDX Toda organización empresarial puede verse afectada por un acontecimiento capaz de poner en riesgo su equilibrio natural, siendo susceptible de derivar en crisis y amenazando no tan sólo la estabilidad de la propia compañía, sino también, el sector empresarial en la que ésta se desenvuelve. En la empresa, cualquier suceso que devenga va a adquirir un protagonismo particula...

  9. La gestión de la comunicación en situaciones de crisis. El caso de la compañía United Biscuits en la crisis de Fontaneda

    OpenAIRE

    Enrique, A.M. (Ana Mª)

    2008-01-01

    Cualquier empresa es susceptible de sufrir una crisis. Accidentes, catástrofes naturales o conflictos sociales son acontecimientos, entre otros, que pueden producirse en cualquier sector empresarial que se trate. El acontecimiento, capaz de poner en riesgo la estabilidad de una empresa, va adquirir un protagonismo particular si además es recogido por los medios de comunicación, quienes convierten el asunto en noticia, y la canalizan, para hacerla llegar a la sociedad. El presente artículo se ...

  10. Nivel de confort y distribución de esfuerzos en la Interfaz Socket – Muñón en amputados transfemorales

    OpenAIRE

    RAMÍREZ PATIÑO, JUAN FERNANDO

    2011-01-01

    A medida que avanza la tecnología también lo hace el desarrollo de dispositivos que permitan generar un mayor bienestar a los seres humanos; sin embargo, existen situaciones que siguen siendo difíciles de resolver aún con la tecnología actual. Estas situaciones básicamente tienen que ver con lo más profundo del ser humano; aquello que sólo cada individuo es capaz de interpretar o valorar de acuerdo a su propia percepción, pero que a la vez puede estar influenciada por agentes externos. En ...

  11. Vacuna frente a infestaciones provocadas por artrópodos hematófagos

    OpenAIRE

    Fuente García, José de la; Villar, Margarita; Prudencio,Carlos Roberto; Pérez de Lastra, José Manuel

    2012-01-01

    La presente invención describe una vacuna frente a infestaciones provocadas por artrópodos hematófagos preferentemente garrapatas, mosquitos, flebótomos, ácaros rojos de las gallinas, pulgas, piojos, piojos de mar, etc. Así mismo, se protege un péptido capaz de inducir una respuesta inmune protectora y de reacción cruzada frente a una infestación provocada por artrópodos hematófagos, un polinucleótido, un vector de expresión, una célula hospedadora, un animal no hum...

  12. Vacuna frente a infestaciones provocadas por artrópodos hematófagos

    OpenAIRE

    Fuente García, José de la; Villar, Margarita; Prudencio,Carlos Roberto; Pérez de Lastra, José Manuel

    2012-01-01

    [ES] La presente invención describe una vacuna frente a infestaciones provocadas por artrópodos hematófagos preferentemente garrapatas, mosquitos, flebótomos, ácaros rojos de las gallinas, pulgas, piojos, piojos de mar, etc. Así mismo, se protege un péptido capaz de inducir una respuesta inmune protectora y de reacción cruzada frente a una infestación provocada por artrópodos hematófagos, un polinucleótido, un vector de expresión, una célula hospedadora, un animal no humano, un anticuerpo, y ...

  13. Derivativos cambiais do mercado brasileiro: precificação e administração de riscos

    OpenAIRE

    França, Daniel Mussi

    2010-01-01

    Trabalho sobre precificação e administração de riscos de derivativos cambiais do mercado brasileiro. O objetivo dessa dissertação é apresentar uma documentação detalhada sobre a precificação e administração de riscos dos principais derivativos cambiais negociados no mercado brasileiro. Serão abordadas algumas particularidades desse mercado e serão propostos alguns ajustes à literatura tradicional visando fornecer uma modelagem que seja capaz de quantificar e qualificar corretamente os ...

  14. La muerte: un objeto de conocimiento social

    OpenAIRE

    Tau, Ramiro; Lenzi, Alicia

    2009-01-01

    Desde el campo de la psicología del desarrollo del conocimiento social y situados en el marco teórico de la psicología genética piagetiana, se realiza un examen analítico comparativo respecto de la teoría de las Representaciones Sociales [RS] argumentando que la última ofrece un enfoque capaz de potenciar la teoría genética del desarrollo cognitivo. Tal condición resulta pertinente en el estudio de la formación de conocimientos sociales y, de manera particular, en la investigación del desarro...

  15. Estudo comportamental e neuroquÃmico em ratos periadolescentes submetidos ao tratamento agudo e subcrÃnico com efavirenz.

    OpenAIRE

    Giuliana IgnÃcio Teixeira Cavalcante

    2011-01-01

    A terapia antirretroviral revolucionou o tratamento dos pacientes portadores do vÃrus da imunodeficiÃncia humana (HIV) porque melhorou o estado clÃnico destes pacientes. à essencial que no mÃnimo uma das drogas utilizadas nesta terapia atravesse bem a barreira hemato-encefÃlica, jà que o HIV alcanÃa o sistema nervoso central (SNC), causando danos. O Efavirenz à um antirretroviral capaz de atravessar bem a barreira hemato-encefÃlica, sendo bastante utilizado no tratamento para HIV. Entretanto,...

  16. As alterações gastrointestinais e olfatórias precedem os sinais motores no modelo experimental da doença de Parkinson induzido pela rotenona

    OpenAIRE

    Morais, Lívia Hecke

    2013-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas. Programa de Pós-Graduação em Farmacologia, Florianópolis, 2013 Existem hipóteses que o processo patológico da Doença de Parkinson inicia-se no Sistema Nervoso Entérico e no bulbo olfatório. Sendo assim, o objetivo deste estudo foi avaliar se a administração oral de um pesticida, rotenona, seria capaz de mimetizar a progressão temporal do parkinsonismo em camundongos, considerando os efeitos loca...

  17. ENTRE RETRATOS E MEMÓRIAS: AS ILUSTRAÇÕES DE POTY EM DOM CASMURRO

    Directory of Open Access Journals (Sweden)

    Cilene Margarete Pereira

    2010-01-01

    Full Text Available En la edición de Dom Casmurro (colección "Clásicos Brasileños", los grabados del artista Poty revelan, en parte, adhesión al discurso del narrador, puntuando la imagen dudosa de Capitu. Sin embargo, en al menos dos ilustraciones, Poty señala otra perspectiva, capaz de descubrir la visión borrosa y amargado el narrador Bento Santiago en relación con la amiga de la infancia.

  18. Alteraciones histológicas y neuroquímicas inducidas en el cuerpo estriado por la exposición a sulfonato de perfluoroctano (PFOS)

    OpenAIRE

    A. Lafuente; N. Pereiro; N. Echegaray; Carrera, L; Blanco, A.; A. Hardisson; Moyano, R.

    2013-01-01

    El sulfonato de perfluoroctano (PFOS) es un compuesto organofluorado y está considerado como un contaminante orgánico persistente. Atraviesa la barrera hematoencefálica y es capaz de incrementar su propio transporte a través de la misma, alcanzando así el sistema nervioso central, donde ejerce su toxicidad. El objetivo de este trabajo es evaluar la neurotoxicidad del PFOS en cuerpo estriado a nivel neuroquímico e histológico. Para ello, este xenobiótico se ha administrado oralmente durante 28...

  19. La experiencia de Guapi. Mirando al futuro: ni todo es pasado ni todo porvenir

    Directory of Open Access Journals (Sweden)

    Jesús García Minguez

    2013-01-01

    la Educación Social a través de la formación técnica y la educación de la autoestima junto a las habilidades interpersonales, cuyo destinatario es un colectivo de 25 jóvenes madres, cabezas de familia y menores de 20 años, surge la oportunidad de crear un espacio laboral instaurando una panadería, repostería y cultivo de hongos dietéticos como forma de vida autónoma, capaz de superar los umbrales humanos, sociales y económicos del contexto.

  20. Diseño de un envase para el transporte de aguas destinados a análisis

    OpenAIRE

    Mestres Alomar, Francesc

    2014-01-01

    En este proyecto se ha diseñado un envase y un proceso productivo competitivo capaz de hacerse un sitio en el mercado de la recogida de agua para análisis. Bajo esta premisa se ha realizado un estudio de mercado de las diferentes alternativas de recipientes existentes para el transporte y recogida de agua para el análisis físico-químico y microbiológico. Para todo ello se ha estudiado la competencia, las necesidades y la normativa vigente. Con la intención de llegar al mejor...

  1. Diseño de redes de sensores para diagnóstico de fallas utilizando análisis de componentes principales

    OpenAIRE

    Rodríguez Aguilar, Leandro; Cedeño, Marco; Sánchez, Mabel

    2014-01-01

    En este trabajo se presenta una metodología de diseño de redes de sensores dedicada al monitoreo estadístico de procesos utilizando análisis de componentes principales. Los sensores se localizan de acuerdo al criterio de mínimo costo. La red de instrumentos obtenida además de identificar las fallas estructuralmente también es capaz de detectarlas cuando se aplica dicha técnica estadística y las magnitudes de falla superan límites preespecificados. El problema de optmización se resuelve median...

  2. MiNube

    OpenAIRE

    Villanueva Hernández, Yarilo David

    2015-01-01

    [ES]MiNube es una solución de almacenamiento de datos online enfocada en la privacidad, seguridad y control del usuario final. A diferencia de otras plataformas de almacenamiento en la nube en el que se depende de agentes externos, MiNube cede el control de los datos al usuario, permitiéndole configurar su propio entorno y definiendo políticas de encriptación en las que el propio usuario es el único agente capaz de acceder a sus datos. MiNube se compone de tres partes: Un servidor web para s...

  3. "Lucem diffundo"

    Directory of Open Access Journals (Sweden)

    Prof. Dr. Eduardo Antonio Bonzatto

    2011-09-01

    Full Text Available Esse texto é parte de um texto maior e trata da relação tensa entre educação escolar, iconografia e história com a intenção de levantar problemas acerca de um referencial teórico capaz de envolver essas três linhas de pesquisa, sugerindo caminhos virtuosos de exploração da imagem histórica de forma a criar possibilidades de ampliação do trabalho docente.

  4. Diseño e implementación de un sistema de control y monitoreo de manejo de lotes para los procesos de: almacenaje, transporte y despacho de materias primas en los predios de una planta de elaboración de cerveza

    OpenAIRE

    Ortiz Campos, Mario Augusto; Martin Moreno, Cesar Antonio

    2009-01-01

    El sistema de manejo de granos constituye la primera fase en el proceso de elaboración de cerveza y desempeña un papel muy importante en la dosificación de materias primas. El siguiente articulo presenta la implementación de un sistema de control capaz de manejar los procesos de recepción, transporte, almacenaje y despacho de dos tipos de productos: arroz y malta (cebada malteada), este último utilizado en diferentes variedades. Se considera el control de lotes y dosificación de materi...

  5. Aprendiendo a sobrevivir: el uso del comercio informal como estrategia de subsistencia para los niños y jóvenes en situación de calle.

    OpenAIRE

    Pérez López, Ruth

    2004-01-01

    International audience; Que sea para sobrevivir en la calle o para contribuir a la economía familiar, trabajar en el sector informal para el niño en situación de calle implica desarrollar las competencias necesarias para realizar una actividad obteniendo de ella un máximo de beneficios. Estas competencias corresponden a la totalidad de los aprendizajes y de las habilidades que ha adquirido y desarrollado en la calle y que es capaz de explotar adaptándose y enfrentándose a un medio hostil que ...

  6. Desarrollo de una herramienta para el diseño de un sistema de aspersión de la contención

    OpenAIRE

    Bosch Durán, Antonio

    2016-01-01

    Uno de los sistemas de seguridad activos de una central nuclear es el sistema de aspersión de la contención. Este sistema está formado por una serie de elementos, entre los que destacan las bombas y los aspersores, y cuya finalidad es disminuir una posible sobrepresión generada dentro de la estructura de la contención en el escenario de un accidente. Se pretende confeccionar una herramienta que a partir de la introducción de unos parámetros por parte del usuario sea capaz de re...

  7. Ética, alfabetización económica e información como fundamentos de las “sociedades resilientes” del siglo XXI

    OpenAIRE

    Hernández-Carrión, José Rodolfo

    2016-01-01

    Las bibliotecas han afrontado en los últimos años el envite de la crisis y los recortes presupuestarios. Las competencias económicas e informacionales son elementos fundamentales para la superación de estas situaciones de crisis y tragedias potenciales. Aquella competencia o capacidad de hacer frente a una crisis y ser capaz de superarla es lo que se denomina resiliencia. La ética en el uso y tratamiento de la información, complementado por una adecuada alfabetización económica, es la propues...

  8. Heterogeneidad y poder en las políticas públicas regionales : Las experiencias de los circuitos del tabaco, la vid y el algodón

    OpenAIRE

    García, Liliana; Lampreabe, Florencia

    2009-01-01

    El proceso de re-regulación económica que se puso en marcha desde el año 2003 ha sido orientado a producir compensaciones financieras y técnicas a los agentes rurales que no pueden ganar suficiente dinero como para invertir en sus actividades. Desafortunadamente, la política pública no ha sido capaz de hacer frente a las desigualdades estructurales que han tenido lugar en las regiones periféricas de la Argentina desde principios del siglo XIX. Proponemos reconocer esta falta de políticas públ...

  9. EL MANAGEMENT: UNA ALTERNATIVA DE DIRECCIÓN EMPRESARIAL

    OpenAIRE

    Gutiérrez Huby, Ana María; Facultad de Ciencias Contables, Universidad Nacional Mayor de San Marcos

    2014-01-01

    Desde el punto de vista general, la capacidad de una institución de crear líderes es más importante que la producción eficiente y barata, la cual siempre puede conseguirse dada una organización y las capacidades humanas. Pero sin un liderazgo emprendedor, responsable y apto, deseoso y capaz de tomar iniciativa, la institución más exitosa no puede mantener su eficiencia y menos incrementarla. Por ello, el Management es una institución básica y dominante mientras la civilización occidental sob...

  10. Sueños líquidos: una ecología política de la privatización del servicio del agua

    OpenAIRE

    Loftus, A; McDonald, D.

    2001-01-01

    Las relaciones de poder se han modificado de manera dramática en Buenos Aires y la concesión de agua ha contribuido a este cambio. Los grupos de élite nacionales e internacionales han ganado, mientras que los grupos pobres han perdido. Aguas Argentinas ha sido capaz de capturar el estado y los trabajadores, anestesiando a los principales organismos que podrían haber actuado para controlar sus actividades. La ideología de que los servicios públicos no pueden ser manejados de manera eficiente p...

  11. Sobre o uso da função proposicional e sua gênese segundo a epistemologia genética

    OpenAIRE

    Ferreira, Rafael dos Reis

    2011-01-01

    O objetivo da Dissertação é investigar, na perspectiva da Epistemologia Genética, proposta por Jean Piaget, uma questão que elaboramos a partir de nossos estudos sobre o Ensaio de Lógica Operatória escrito por Piaget, a saber: como o sujeito epistêmico usa e se torna capaz de usar funções proposicionais na estruturação lógico-matemática que ele faz da realidade? Tomando esta questão como fio condutor de nossas pesquisas, procuramos compreender como se constituem as funções proposicionais, um ...

  12. Un nuevo poder en las calles. Repertorios de acción colectiva del Movimiento global en Europa. De Seattle a Madrid

    OpenAIRE

    2005-01-01

    En el presente trabajo desarrollamos dos cuestiones relativas a los movimientos contra el Capitalismo global y la guerra. En primer lugar, hacemos un breve repaso a los diferentes paradigmas de aproximación teórica a los movimientos sociales desde la segunda mitad del siglo XX y defendemos la necesidad de avanzar hacia una ciencia de movimiento multidisciplinar y dinámica, capaz de aprehender la dimensión heterogénea y antisistémica de los movimientos globales. Asimismo defendemos las denomin...

  13. Un nuevo poder en las calles. Repertorios de acción colectiva del Movimiento global en Europa. De Seattle a Madrid Un nuevo poder en las calles. Repertorios de acción colectiva del Movimiento global en Europa. De Seattle a Madrid

    OpenAIRE

    2006-01-01

    En el presente trabajo desarrollamos dos cuestiones relativas a los movimientos contra el Capitalismo global y la guerra. En primer lugar, hacemos un breve repaso a los diferentes paradigmas de aproximación teórica a los movimientos sociales desde la segunda mitad del siglo XX y defendemos la necesidad de avanzar hacia una ciencia de movimiento multidisciplinar y dinámica, capaz de aprehender la dimensión heterogénea y antisistémica de los movimientos globales. Asimismo defendemos las denomin...

  14. PROPIEDADES DE LA MADERA Y RELACIÓN DEL ESTADO NUTRIMENTAL CON EL CRECIMIENTO EN TECA

    OpenAIRE

    Alina Luisa Ypushima-Pinedo; Eduardo Salcedo Pérez; Ricardo Manríquez González; José Antonio Silva Guzmán; Juan Francisco Zamora Nátera; Efrén Hernández Álvarez

    2014-01-01

    En México existe cada vez mayor interés en producir madera de calidad a partir de Tectona grandis, cuyo rendimiento sea capaz de satisfacer la demanda del mercado internacional, lo que es sumamente relevante ya que la teca tiene gran valor económico y su comercialización puede derivar en la obtención de importantes ganancias; sin embargo aún no se cuenta con suficiente información para lograrlo. En el presente estudio se evaluaron los caracteres anatómicos de densidad básica, de resisten...

  15. Mecanismos moleculares que confieren resistencia a la apoptosis por TGF-beta en células de Hepatocarcinoma Celular Humano

    OpenAIRE

    Caja Puigsubirà, Laia

    2010-01-01

    En los últimos años nuestro grupo ha estudiado las diferentes vías de señalización inducidas por TGF-β en hepatocitos fetales de rata. A dosis bajas, el TGF-β inhibe el crecimiento, pero a concentraciones más elevadas es capaz de inducir apoptosis (Sanchez et al. 1995; Sanchez et al. 1996). El proceso apoptótico está mediado por un incremento en el contenido intracelular de ROS, dependiente de la síntesis de novo de proteínas, y que correlaciona con una caída en los niveles intracel...

  16. Apostar a la invención, desde un pensar transformador : En la era de la subjetividad re-tinelizada y las garantías del estado...(de facebook)

    OpenAIRE

    Estanga, Jorge Daniel

    2015-01-01

    “Hay que atreverse a inaugurar pensamiento propio. Sin refugiarse en rituales consagrados” Afirmó Ignacio Lewkowicz, según una cita de Campo Grupal, de Octubre de 2006. “En medios inestables, lo decisivo para la subjetividad son las operaciones. Y una operación es aquél movimiento capaz de producir lo que no está”. Casualmente agrega Duschatzky, exactamente un año después en otra cita de la misma revista. Ante lo cual también nos valemos de los aportes de Lazzarato, quien en- “Políticas...

  17. Analizador de Frecuencia: una nueva aplicación docente para Android

    Directory of Open Access Journals (Sweden)

    José A. Gómez-Tejedor

    2014-03-01

    Full Text Available En este trabajo se presenta una aplicación para dispositivo móvil Android capaz de medir la frecuencia fundamental de un sonido de forma muy precisa. Esta aplicación puede ser utilizada en campos tan diversos como la música para afinar instrumentos musicales, en física para la medida del efecto Doppler o en sistemas de reconocimiento del habla para determinar la frecuencia fundamental de la voz. En concreto, en este trabajo presentamos algunos ejemplos en el campo de la física relacionados con el efecto Doppler para ondas acústicas.

  18. Estrategias de marketing turistico en espacios naturales protegidos

    OpenAIRE

    Mondéjar Jiménez, Juan Antonio

    2016-01-01

    El turismo es una de las actividades económicas de mayor importancia en Castilla-La Mancha. La riqueza histórico-monumental y natural de la región y su baja presión demográfica convierten al turismo en uno de los pilares básicos como reclamo de un producto de calidad Y elemento vertebrador de zonas deprimidas y capaz de fijar población al medio rural y proteger los espacios naturales. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.

  19. Caracterización del potencial metabólico y regulador de la ingesta del Sardo Picudo (Diplodus puntazzo)

    OpenAIRE

    Almaida Pagán, Pedro Francisco

    2008-01-01

    El sargo picudo es capaz de componer, seleccionando entre preparaciones encapsuladas de macronutrientes puros, una dieta completa que se ajusta a sus necesidades fisiológicas, aún en ausencia de la información orosensorial del alimento. La técnica de encapsulación ha permitido comprobar este último extremo, resaltando la complejidad de los mecanismos implicados en la regulación de la ingesta en peces. El perfil omnívoro de la especie está caracterizado por una menor dependencia de la pro...

  20. Synthesis of luminescents biomarkers containing rare-earth ions for application for diagnostics tests for disease chagas

    OpenAIRE

    ENGELMANN, KLAUSS

    2014-01-01

    Os íons terras raras apresentam propriedades espectroscópicas diferenciadas e números de coordenação entre 6 e 12 e seu estado de oxidação mais comum é o íon trivalente. Apesar de esses íons apresentarem uma baixa intensidade de luminescência, em função de sua baixa absortividade molar, esses são capazes de formar complexo onde o ligante absorva luz e transfira para o centro metálico essa energia, fenômeno conhecido como efeito antena. Essas propriedades tornam os seus complexos alvos de estu...

  1. Conhecimento de mulheres sobre o exame de Papanicolaou Conocimiento de mujeres sobre el examen de Papanicolaou Women's knowledge about the Papanicolaou exam

    OpenAIRE

    Carolina Amancio Valente; Viviane Andrade; Maurícia Brochado Oliveira Soares; Sueli Riul da Silva

    2009-01-01

    Estudo epidemiológico, quantitativo, descritivo, transversal. Realizado com mulheres, estudantes do ensino médio noturno em escolas públicas para identificar conhecimentos sobre o exame de Papanicolaou. Participaram 1035 mulheres sendo 476 maiores de 18 anos, que compuseram o grupo de sujeitos. Após consentimento foi aplicado questionário com questões objetivas, capazes de identificar conhecimentos a respeito do exame de Papanicolaou, bem como perfil sócio-epidemiológico do grupo; foi realiza...

  2. Mestrado profissional como prática acadêmica Mestrado profissional como prática acadêmica

    OpenAIRE

    Fischer,Tânia

    2011-01-01

    Neste trabalho, discute-se o mestrado profissional como prática acadêmica, reconstituindo itinerários e identificando configurações, tensões e dilemas desse tipo de curso. Propõe-se que o mestrado profissional seja valorizado como experiência inovadora capaz de contribuir para a renovação da pós-graduação brasileira. The aim of this paper is to discuss the professional masters course as an academic activity. The itineraries, pathways, configurations, tensions and dilemmas of this type of c...

  3. ¿Por qué te peleas? Conflictos motores y emociones negativas en la clase de Educación Física: el caso de los juegos de oposición

    OpenAIRE

    2014-01-01

    Los conflictos, habituales en las escuelas y motivo de preocupación docente e institucional, son situaciones que emergen cuando el alumnado no es capaz de gestionar las emociones negativas. La Educación Física dispone de diferentes familias de juegos motores, como los juegos de oposición, para educar las relaciones interpersonales de los alumnos. Este artículo presenta dos investigaciones que examinaron los efectos de los juegos de oposición en la aparición de...

  4. El neuromarketing: Una nueva disciplina para la investigación de audiencias y de la opinión pública

    OpenAIRE

    María Gómez y Patiño; Elena Bandrés Goldaráz

    2014-01-01

    Las neurociencias pueden crear una ciudadanía distinta y una nueva disciplina: Neuromarketing capaz de modificar la Opinión Pública: audiencias y votantes. Se describen las técnicas utilizadas en la investigación comercial, utilizable en el ámbito social y político, que permiten conocer los impulsos, emociones y  reacciones de la ciudadanía ante ciertos estímulos cuyo conocimiento puede ser tan beneficioso como perverso. Por ello, es necesario reflexionar sobre el neuroescepticismo, y algunos...

  5. O buraco negro da consciência ocidental = The black hole of western consciousness

    Directory of Open Access Journals (Sweden)

    Seitenfus, Ricardo Antônio Silva

    2015-01-01

    Full Text Available Desde o alvorecer do Haiti em 1804, o Ocidente nunca foi capaz de aceitar, compreender e conviver com os princípios que regem a independência traumática do berco dos Direitos Humanos fundamentais. Razões de natureza política, estratégica, econômica, religiosa e sobretudo cultural – em seu sentido antropológico – encontram-se no cerne dos desencontros do mundo com a única República que conseguiu libertar-se dos grilhões da escravidão e criar uma nação independente

  6. C?o sem dono: focaliza??o e constru??o da Personagem na adapta??o f?lmica do romance At? o dia em que o c?o morreu

    OpenAIRE

    Lins, Arthur Fernandes Andrade

    2011-01-01

    A narratologia tem se mostrado um fecundo campo de estudo na reflex?o da linguagem audiovisual. Isto porque, desde a sua origem, o cinema foi incumbido de exercer o papel de ser uma nova express?o art?stica capaz de contar hist?rias. Esta sua tend?ncia adquire diferentes fei??es tendo em vista o contexto de produ??o e as diversas formas de articula??o de sua linguagem. Por?m, enquanto outras artes j? possuem um vasto pensamento te?rico acerca de seus procedimentos narrativos, como a literatur...

  7. Revestimientos Continuos Interiores de Varias Capas con Características de Barrera de Vapor e Higroscopicidad

    OpenAIRE

    Mesquita, Carlos Alexandre Coutinho

    2013-01-01

    El trabajo realizado ha pretendido desarrollar y caracterizar una solución de revestimiento continuo interior con características de barrera de vapor e higroscopicidad. El objetivo ha sido desarrollar una solución de revestimiento continuo interior, capaz de reducir el riesgo de condensación intersticial en los cerramientos, manteniendo la capacidad de regulación de la humedad del ambiente interior. ESTUDIO DE ANTECEDENTES 1 La condensación intersticial La condensación intersticial se pro...

  8. Desarrollo del entorno personal de aprendizaje para tutoría e investigación en niveles educativos superiores

    OpenAIRE

    Alma Dzib Goodin; John Castevich; Dolores Luna Hogan; Linda Sanders; Kathleen Slovec; Daniel Yelizarov

    2015-01-01

    El concepto de entorno personal se refiere a los sistemas que facilitan a los aprendices a tomar control de manera autónoma sus aprendizajes. Esto incluye apoyos para determinar sus propias metas, comprensión de contenidos y de los procesos implicados en el proceso de aprendizaje. Usualmente el mayor impulso se ofrece en torno a las nuevas tecnologías, ya que se supone que el alumno es capaz de interactuar de manera efectiva con los lenguajes y entornos  tecnológicos, pues más jóvenes las gen...

  9. Contribución de la lactancia materna a la disminución de la mortalidad infantil en los países menos desarrollados

    OpenAIRE

    López García, Estíbaliz

    2015-01-01

    A día de hoy las tasas de mortalidad infantil en países menos desarrollados continúan alcanzado cifras alarmantes. En este proyecto se propone la lactancia materna como vía de reducción de la mortalidad en menores de cinco años al demostrar que es capaz de reducir el riesgo de muerte en edad neonatal y por enfermedades como la diarrea o la neumonía. Se demuestra cómo unas pautas adecuadas de lactancia materna reducen significativamente el riesgo de muerte en los casos anteriormente expuestos,...

  10. Modelo paramétrico de la mecánica del robot MIMBOT : aplicación informática MIMBOT 3.5

    OpenAIRE

    Bustos Caballero, Alejandro

    2010-01-01

    El presente proyecto está ambientado en el rediseño y evolución del robot bípedo Pasibot, desarrollado por el grupo de investigación MAQLAB, de la Universidad Carlos III de Madrid. El robot Pasibot es un bípedo resultado de la combinación de mecanismos articulados clásicos, de tal forma que el diseño final es capaz de desarrollar la cinemática completa de la pierna humana. El robot Pasibot fue diseñado con menos actuadores que juntas biológicas tiene la pierna humana, dis...

  11. The influence of local cultural specificities on competitiveness clusters: the case study of malacocultura of the Greater Florianópolis region

    OpenAIRE

    Teixeira, Fátima Regina

    2016-01-01

    Tese de Doutoramento em Engenharia Industrial e de Sistemas Os clusters constituem uma forma de organização produtiva, que se apoia principalmente na partilha de uma localização geográfica, sendo capazes de promover o desenvolvimento regional, a sustentabilidade económica, social e ambiental, e a preservação da cultura local, em face de um ambiente produtivo cada vez mais competitivo e globalizado. No entanto, cada localização, cada região, é única tanto nos seus aspetos ambien...

  12. A MILITANT MYSTIC: REFLECTIONS ON THE POSSIBLE CONTRIBUTIONS OF DIETRICH BONHOEFFER FOR A THEOLOGY AND PASTORAL ACTION OF INTEGRATION IN THE BRAZILIAN BAPTIST CHURCH

    OpenAIRE

    MARIA JANDIRA CORTES DE NOVAIS LIMA

    2008-01-01

    O trabalho caracteriza o dualismo no protestantismo brasileiro. Com base na análise da vida e obra Dietrich Bonhoeffer apresenta estratégias capazes de iluminar a prática da Igreja Batista no país. Primeiramente apresenta- se o problema que instigou a pesquisa: os efeitos prejudiciais do dualismo para a propagação do Evangelho. Afirma-se, também, a necessidade de uma visão integrada do ser humano que resulte em prática e teologia que considerem a inseparabilidad...

  13. Pernambuco à sombra do golpe: a arte resistência de Daniel Santiago

    OpenAIRE

    Silva, Itamar Morgado da

    2014-01-01

    Este trabalho tem por objetivo analisar a influência do contexto político na trajetória do artista pernambucano Daniel Santiago, iniciada em 1970, no auge da repressão política da ditadura militar (1964-1985). Interessa-nos entender a ocorrência, num momento particularmente adverso a práticas artísticas experimentais, de uma linguagem critica e irreverente, capaz de dialogar com as ações artísticas contemporâneas, a partir de uma base afastada geograficamente do eixo Rio de ...

  14. A Atividade Física No Tratamento De Pacientes Portadores De Diabetes Mellitus

    OpenAIRE

    Gazola, Vilma A. Ferreira G.; Bazotte, Roberto Barbosa; Souza, Sandra de Vicente

    2008-01-01

    Os estudos epidemiológicos atualmente disponíveis trazem evidências de que pacientes diabéticos fisicamente ativos são capazes de obter mais benefícios do tratamento em relação a indivíduos diabéticos sedentários. Desta forma, o profissional de educação física necessita atuar como educador e formular orientações aos estudantes portadores de diabetes mellitus. Todavia, é necess...

  15. Anatomia patológica da sinóvia de pacientes submetidos à liberação do túnel do carpo Pathological study of the synovial tissue of patients who underwent open carpal tunnel release

    OpenAIRE

    2010-01-01

    OBJETIVO: Verificar se a biópsia da sinóvia do túnel do carpo é capaz de identificar patologias sistêmicas que não foram diagnosticadas clinicamente ou por exames laboratoriais. MÉTODO: 46 exames anatomopatológicos da sinóvia dos tendões flexores no túnel do carpo de pacientes submetidos à liberação aberta para o tratamento desta síndrome compressiva foram, retrospectivamente, analisados. Os autores propuseram uma nova classificação para a lesão de acordo com a intensidade do processo inflama...

  16. Anatomia patológica da sinóvia de pacientes submetidos à liberação do túnel do carpo

    OpenAIRE

    2010-01-01

    OBJETIVO: Verificar se a biópsia da sinóvia do túnel do carpo é capaz de identificar patologias sistêmicas que não foram diagnosticadas clinicamente ou por exames laboratoriais. MÉTODO: 46 exames anatomopatológicos da sinóvia dos tendões flexores no túnel do carpo de pacientes submetidos à liberação aberta para o tratamento desta síndrome compressiva foram, retrospectivamente, analisados. Os autores propuseram uma nova classificação para a lesão de acordo com a intensidade do processo inflama...

  17. Caracterização fenotípica de camundongos knockout para neurolisina.

    OpenAIRE

    Diogo Manuel Lopes de Paiva Cavalcanti

    2014-01-01

    A oligopeptidase neurolina (E.C.3.4.24.16; nln ) foi identificado pela primeira vez em membranas sinápticas de cérebro de ratos como sendo capaz de participar no metabolismo de peptídeos bioativos, como neurotensina e bradicinina. Recentemente, foi sugerido que a ausência de Nln pode melhorar a sensibilidade a insulina. Aqui, nós mostrado que camundongos knockout para Nln (KO) são mais tolrerantes à glicose, sensíveis à insulina e apresentam maior gliconeogênese. Os animais KO apresentou um a...

  18. Bases fisiológicas de la regeneración ósea I: histología y fisiología del tejido óseo

    OpenAIRE

    Fernández-Tresguerres Hernández-Gil, Isabel; Alobera Gracia, M.A.; del Canto Pingarrón, Mariano; Blanco Jérez, Luis

    2006-01-01

    El hueso es el único tejido del organismo capaz de regenerarse, permitiendo la restitutio ad integrum tras el trauma. Cuando se produce una fractura, se coloca un implante osteointegrado o se realiza un injerto para aumentar el sustrato óseo antes de la inserción de implantes, lo que se pretende es la regeneración ósea, es decir, la formación de hueso nuevo que, tras un proceso de remodelado, sea idéntico al preexistente. El hueso es un tejido dinámico en constante formación y reabsorción....

  19. Un esquema de volúmenes finitos de alto orden para las ecuaciones de aguas someras con topografía y áreas secas

    OpenAIRE

    Gallardo Molina, José María; Castro Díaz, Manuel Jesús; Parés Madroñal, Carlos

    2007-01-01

    Presentamos un esquema de volúmenes finitos para la resolución de las ecuaciones de aguas someras con término fuente debido a la topografía del fondo. Se trata de un esquema de alto orden, bien equilibrado y capaz de afrontar situaciones en las que aparecen zonas secas. El esquema se ha desarrollado en un marco no conservativo general, y se basa en reconstrucciones hiperbólicas de estados. El tratamiento de situaciones seco/mojado se lleva a cabo mediante la resolución de problemas de Rie...

  20. A percepção dos colaboradores sobre riscos e doenças profissionais (um estudo em misericórdias)

    OpenAIRE

    Flora, Eloísa Sofia Santinho

    2013-01-01

    As Organizações devem desenvolver ferramentas de gestão capazes de identificar, contextualizar e eliminar/reduzir os riscos ocupacionais para a estruturação de ambientes saudáveis de trabalho. Nas instituições associadas com a Santa Casa da Misericórdia são desempenhadas funções com níveis de exigência elevados, impondo constantes desafios aos seus colaboradores. Neste sentido, pretendeu-se caracterizar a percepção dos colaboradores de três Misericórdias (Bragança, Mirandela e Vinhais) em ...

  1. Diseño e implementación de un sistema de control para la representación gráfica a partir de imágenes

    OpenAIRE

    Rilo Antelo, Lois

    2016-01-01

    En este trabajo Fin de Máster se pretende construír un robot que sea capaz de dibujar en una pizarra, a través de un rotulador situado en su actuador, realizando una representación de una imagen digital que se recibe como argumento de entrada. Para ello se empleará un robot delta, que es un tipo de robot paralelo de gran aplicación en la industria y en la impresión 3D. Un robot delta consta de tres cadenas cinemáticas iguales que unen dos bases, una fija (que da soporte a la estructura comple...

  2. Desarrollo de un emulador en tiempo real de un motor diesel sobrealimentado de automoción

    OpenAIRE

    IGLESIAS MORENO, AMANDA

    2015-01-01

    [ES] El proyecto consiste en el desarrollo de un sistema para emular el comportamiento de un motor Diesel sobrealimentado. El proyecto combinará diferentes modelos de motor en una plataforma de desarrollo capaz de simular las salidas analógicas de diferentes sensores, de forma que sea posible conectar unidades de control de motor (ECU) al sistema para su evaluación y desarrollo. Iglesias Moreno, A. (2014). Desarrollo de un emulador en tiempo real de un motor diesel sobrealimentado de autom...

  3. Modificaciones genéticas en mutantes atoxigénicos de Vibrio cholerae O139 que mejoran sus propiedades como candidatos vacunales

    Directory of Open Access Journals (Sweden)

    Talena Ledón

    2007-01-01

    el cual es capaz de transportar los genes de la toxina colérica entre diferentes cepas de Vibrio cholerae mediante un mecanismo de transducción especializada altamente eficiente. La caracterización genética de los mutantes se realizó mediante Southern blotting con sondas que reconocen específicamente los genes de interés. Los mutantes así obtenidos mantuvieron el fenotipo de mótiles de sus parentales y un buen nivel de colonización en el modelo del ratón neonato, aspectos esenciales para un candidato vacunal.

  4. Metilmercurio en el cabello de población infantil Methylmercury in the hair of a children population

    OpenAIRE

    M.ªT. Llorente Ballesteros; I. Vírseda Chamorro; R. Peral Jiménez; M.ªJ. Sanz Grimaldi; M.ªA. Ruiz Tejada; J. L. López Colón

    2011-01-01

    Introducción: El metilmercurio (MeHg) es el compuesto orgánico del mercurio más abundante en el medio ambiente. Éste, es un potente neurotóxico, capaz de atravesar la barrera hematoencefálica y placentaria. Incluso a niveles bajos, puede originar alteraciones en el SNC que afectan a los procesos del desarrollo feto-infantil. La principal fuente de exposición a MeHg es la ingestión de pescado contaminado. Objetivos: La USEPA (Agencia de protección del medio ambiente USA) recomendaba unos nivel...

  5. Diseño de un Sistema Integrado de Gestión de Destinos Turísticos

    OpenAIRE

    Aguayo Maldonado, Andrés

    2015-01-01

    El objetivo central de esta tesis es definir una arquitectura software que permita construir un sistema integrado de gestión de destino, que cubra todas las necesidades de información internas y externas de los modernos entes de gestión, que pueda integrarse con otros sistemas de destino ofreciendo una información de calidad y no redundante, que articule y facilite la comercialización de todos los proveedores del entorno y que sea capaz de tener en cuenta la opinión de los turistas de una for...

  6. ENSINO DE ESTATÍSTICA: UMA PROPOSTA FUNDAMENTADA NA TEORIA DO ENSINO DESENVOLVIMENTAL.

    OpenAIRE

    Cunha, André Luiz Araújo

    2014-01-01

    O baixo desempenho de estudantes brasileiros na aprendizagem de matemática, de um modo geral, tem sido evidenciado em avaliações nacionais e internacionais. Particularmente no ensino médio, e especificamente em estatística descritiva, identifica-se a necessidade de mudanças nas práticas de ensino que, por sua vez, estão requerendo aportes teóricometodológicos capazes de impulsionar a aprendizagem dos alunos. A teoria do ensino desenvolvimental, de V. V. Davydov (1988, 1999), en...

  7. El impacto geopolítico de la revolución del gas de esquisto: consideraciones para México

    OpenAIRE

    Rosío Vargas Suárez; Heberto Barrios Castillo

    2013-01-01

    El gas de esquisto (shale gas) y su complemento, el petróleo de esquisto (shale oil), no son sólo recursos energéticos adicionales o fuentes alternas a las convencionales, sino que representan la posibilidad de un nuevo posicionamiento geoestratégico para Estados Unidos de América que lo colocaría en una posición de igual a igual con socios y rivales. Por ello se avizora una verdadera revolución capaz de modificar los equilibrios energéticos a nivel mundial, que afectarían la posición de impo...

  8. Desarrollo de aplicación de asistencia remota para personas con necesidades especiales

    OpenAIRE

    Acosta Almeda, Tomás

    2015-01-01

    El proyecto consiste en el desarrollo de una aplicación de asistencia para personas con necesidades especiales. Se basa en un reloj programable que recoge los datos de movimiento de estas personas y es capaz de detectar caídas. Una vez detectada una caída el reloj da un tiempo de seguridad, si se pasa este tiempo y no hay respuesta por parte del usuario, entonces el reloj se pone en contacto con un móvil con sistema opeartivo Android ( al que está conectado mediante Bluetooth ) y éste envía u...

  9. Entrevista a Jesús Cortés, científico participante del proyecto COLAMN:

    Directory of Open Access Journals (Sweden)

    Ángel Correa

    2008-12-01

    Full Text Available COLAMN (“Una novedosa arquitectura de procesamiento para sistemas cognitivos basada en la microcircuitería laminar del neocórtex” es un macroproyecto dentro del Reino Unido que intenta implementar en silicio la corteza cerebral de mamíferos. Este sistema sería capaz de realizar multitud de operaciones complejas que los ordenadores convencionales no son capaces de hacer. En este proyecto están implicados científicos cognitivos de diversas áreas, como la ingeniería, matemáticas, biología o informática.

  10. Use of hardware-on-the-loop to test missions for a low cost mini-launcher

    OpenAIRE

    2011-01-01

    Este estudio esta dirigido al uso de lazos de control por Hardware para probar subsistemas tanto de femto-satelites como mini-lanzaderas. Usaremos el simulador Moon2.0 para implementar comunicaciones entre una caja negra y el simulador. Gracias a lo cual, sera facil comprobar y validar cualquier dispositivo dentro del ciclo de dise?o de la mision. En este trabajo final de carrera (TFC), tratamos de comprobar si este metodo es capaz de validar el proyecto, de una forma economica, el Wiki-Launc...

  11. DESARROLLO DE ENVASES ACTIVOS APLICADOS A PRODUCTOS DE EXPORTACION CON ALTO VALOR AGREGADO EN LA INDUSTRIA DEL SALMON

    OpenAIRE

    GALOTTO LOPEZ, MARIA JOSE

    2005-01-01

    En el proyecto se desarrolló un envase con capacidad de absorción de oxígeno específico para envasado de salmón. El envase es capaz de activar la absorción de oxígeno por la propia humedad del producto envasado y evita la entrada de oxígeno desde el exterior y consume el oxígeno residual que queda en el interior del envase una vez envasado el producto. Con este envase se consigue incrementar la calidad y vida útil de salmón ahumado envasado, con respecto al producto envasado con envases tradi...

  12. Estudio comparativo de la influencia del empaque, en la tilapia fresca, almacenado a temperaturas de refrigeración

    OpenAIRE

    Fiallos Cardenas, Cesar; Castillo Soto, Priscila

    2009-01-01

    Este trabajo presenta el estudio comparativo de la influencia del empaque en la vida útil de filetes de tilapia almacenados a temperaturas de refrigeración. El objetivo es desarrollar un empaque capaz de mejorar las características organolépticas como el tiempo de vida útil del producto. Para el desarrollo de este estudio se optó por la utilización de atmósferas modificadas en el empaque de los filetes. Para esto se utilizó diferentes concentraciones en cada mezcla. El producto final fue some...

  13. Jessica Stites Mor, Transition Cinema. Political Filmmaking and the Argentine Left since 1968, Pittsburgh, University of Pittsburg Press, 2011, 264 p.

    OpenAIRE

    2013-01-01

    Una mirada alejada puede ofrecer claridad sobre aspectos que aparecen difusos desde la cercanía. Una percepción extranjera también, tras superar el riesgo de la incomprensión, puede ser capaz de desnaturalizar aquello que desde dentro de una cultura es imperceptible. Docente en la universidad de British Columbia, Jessica Stites Mor reelaboró su tesis de doctorado en una obra que brinda una lectura amena, bien fundada y enriquecida para un público amplio -incluso poco familiarizado con la hist...

  14. O texto fílmico entre a moldura e o enquadramento

    Directory of Open Access Journals (Sweden)

    Eduardo Peñuela Cañizal

    2012-12-01

    Full Text Available O artigo trata do papel que desempenha a moldura na função de recurso utilizado por cineastas para representar as coisas do mundo através do ritual poético, meio expressivo capaz de conferir às configurações fílmicas uma transcendência que os procedimentos denotativos anulam. Com essa finalidade, o trabalho é construído como um discurso de leitura destinado a interpretar passagens de Dreams (1990, de Akira Kurosawa.

  15. Violencia e Hipertensión. Un estudio sobre la génesis psicosomática de la Enfermedad Hipertensiva

    Directory of Open Access Journals (Sweden)

    José Vicente Arévalo Álvarez

    2003-07-01

    Full Text Available Este trabajo es un intento de demostrar, en base a  la experiencia de largos años de trabajo clínico, como la violencia es capaz de producir lesiones funcionales específicas, que en el curso de los años originan lesiones orgánicas, capaces de llevar al paciente hacia la invalidez y a la muerte, con el aparecimiento de trastornos psicosomáticos como la hipertensión

  16. Asociación del dolor podal con variables podométricas, de la práctica deportiva e índice de masa corporal en niños de 12 a 14 años de escuelas de formación deportiva de fútbol de la ciudad de Neiva, 2014

    OpenAIRE

    Ramirez Galvis, Anderson; Utria Tirado, Lorena

    2016-01-01

    El pie es la base de sustentación del ser humano, extremidad utilizada para diferentes actividades de locomoción, capaz de soportar todo el peso corporal incluso en acciones deportivas que implican mantenerla en buenas condiciones. La investigación en el área deportiva continuamente está tomando fuerza con miras en el mejoramiento del rendimiento y la obtención de la forma deportiva incluyendo el buen estado de todos los segmentos corporales implicados, de esta manera se realiza esta investig...

  17. Técnicas e Perspectivas em Imunoterapia do Câncer

    OpenAIRE

    Giacomini, Giovana; Depto. Bioquímica e Microbiologia - IB - UNESP RC; Menezes, Hercules; IB-UNESP-RC

    2012-01-01

    Os tumores malignos são um dos principais focos da imunoterapia, não apenas no tratamento, mas também na sua prevenção. Embora as células cancerosas sejam menos imunogênicas do que microorganismos, o sistema imunológico é capaz de reconhecer e eliminar células tumorais. Entretanto, assim como os parasitas desenvolvem mecanismos de escape ao sistema imune, os tumores também conseguem evadir-se de diversas maneiras, muitas vezes interferindo nas respostas imunes contra eles. Nos últimos anos, a...

  18. Caracterización molecular y funcional de la respuesta de la acidez en Bordetella bronchiseptica : Posible rol en la infección persistente

    OpenAIRE

    Fingermann, Matías

    2011-01-01

    El presente trabajo de tesis se ha focalizado en el estudio del comportamiento de Bordetella bronchiseptica frente a una condición de estrés ambiental como lo es la acidez. La elección de esta temática responde a que este patógeno respiratorio, capaz de inducir un conjunto de enfermedades denominadas bordetellosis, enfrenta y sobrelleva esta condición de estrés durante su ciclo de vida. La capacidad de resistir a a condiciones de acidez podría permitir a B. bronchiseptica inducir estadíos cró...

  19. Concepción holística de la salud mental

    OpenAIRE

    Novel Martí, Gloria; Lluch Canut, Ma. Teresa; Rigol Cuadra, Assumpta

    1988-01-01

    La teoría holística de la salud concibe al hombre como un todo integral y sostiene que aquél tiende, por su naturaleza, a conservar esta integridad, siendo capaz de velar por su estado de salud y controlar el estrés y la ansiedad. La salud es la resultante de un equilibrio dinámico entre las distintas partes de la persona. Los desequilibrios o divisiones en la estructura humana provocan tensión y enfermedad. Por lo tanto, adoptar una concepción holística del hombre es fundamental para consegu...

  20. Clasificación de granizo en superficie usando técnicas de minería de datos y datos de radar meteorológico

    OpenAIRE

    Bellini Saibene, Yanina; Volpacchio, Martín

    2015-01-01

    El granizo es capaz de infringir cuantiosos daños y su estudio es útil para los servicios meteorológicos, la industria de los seguros y el sector agropecuario. Debido a la reducida ocurrencia espacial y temporal de los eventos de granizo, determinar su localización y frecuencia es difícil y costoso. Se realizó un estudio de los datos de un radar polarimétrico de banda C (INTA Anguil, La Pampa) utilizando 14 tormentas de granizo y alrededor de 1400 casos en un radio de 240 km desde Enero de...

  1. Sistema cartográfico oficial en Marruecos

    OpenAIRE

    2016-01-01

    EL objetivo de este proyecto final de grado es crear un programa que será capaz de transformar coordenadas entre el sistema cartográfico marroquí al sistema internacional WGS84, por lo tanto tenemos seguir ciertos pasos para conseguir el objetivo. El sistema cartográfico marroquí opta con los siguientes parámetros: Elipsoide Clarke1880 ; Proyección cónica conforme de Lambert en cuatro zonas ; Proyección UTM en la Sahara Marroquí por fines Cartográficos ; Punto fundamental Merchich, dirección ...

  2. El cuidado espiritual como una oportunidad de cuidado y trascendencia en la atención de enfermería

    OpenAIRE

    Fabiola Morales-Ramón; María Guadalupe Ojeda-Vargas

    2014-01-01

    Desde los tiempos de Florence Nightingale, la espiritualidad era parte esencial del cuidado holístico del cliente. Para ella la espiritualidad es intrínseca a la naturaleza humana y es el recurso más profundo y potente de sanación que tiene la persona. Cada ser humano es capaz de desarrollar en forma gradual su espiritualidad. Las necesidades espirituales y el mantenimiento del bienestar espiritual son componentes importantes del ser humano, pero con frecuencia es un aspecto desatendid...

  3. A pubalgia no jogador de futebol

    OpenAIRE

    Daniel Câmara Azevedo; Flávio de Oliveira Pires; Ricardo Luiz Carneiro

    1999-01-01

    A pubalgia tornou-se um problema comum no futebol, preocupando atletas, treinadores, ortopedistas e fisioterapeutas. A articulação do púbis é capaz de absorver parte das forças descendentes e ascendentes que são aplicadas ao corpo e seu comportamento depende diretamente dos movimentos da articulação sacroilíaca. Esses fatores tornam essa articulação extremamente importante, colocando-a algumas vezes em situações estressantes. Por ter como características tratamento difícil e de tempo prolonga...

  4. Identidad y naturaleza humana desde una perspectiva neuroteológica fundamental

    OpenAIRE

    2015-01-01

    Las neurociencias se presentan como un campo de investigación capaz de revolucionar el pensamiento actual. Su influencia es tal que se deja sentir en todos los saberes y disciplinas. Al mismo tiempo están dando paso a nuevas disciplinas que antes resultaban poco probables. Entre otras ha surgido la neuropolítica, la neuroeducación, la neuroética y también la neuroteología. Esta última disciplina intenta combinar los resultados que las neurociencias aportan acerca del funcionamiento de nuestro...

  5. Controle de larvas de Aedes aegypti através da utilização de Bacillus thuringiensis em São Sebastião (DF, Brasil - doi: 10.5102/ucs.v10i2.1761

    Directory of Open Access Journals (Sweden)

    Rose Gomes Monnerat

    2012-12-01

    Full Text Available Dengue é uma doença grave, para a qual não existem medicamentos. O controle da doença, portanto, deve ser feito através da eliminação do seu vetor, o mosquito Aedes aegypti. A Embrapa em parceria com a Bthek Biotecnologia desenvolveu o produto Bt-horus SC capaz de controlar as larvas deste inseto. Este produto foi utilizado numa campanha de controle do A. aegypti em São Sebastião (DF, onde a população foi capacitada e participou ativamente do combate ao vetor.

  6. Detención de menores extranjeros no acompañados en Europa: la necesidad de garantizar efectivamente los derechos ya reconocidos

    Directory of Open Access Journals (Sweden)

    Juan Manuel López Ulla

    Full Text Available El Consejo de Europa y la Unión Europea, en varios documentos aprobados entre 2010 y 2012, reconocen abiertamente que en Europa no se han adoptado las medidas suficientes para garantizar de manera efectiva los derechos reconocidos en la Convención de Naciones Unidas sobre los Derechos del Niño (1989 en relación con los menores extranjeros no acompañados. Por lo que se refiere a las condiciones en las que pueden ser detenidos, urge implementar un procedimiento común capaz de salvaguardar la tutela administrativa y jurisdiccional de estos menores.

  7. Desarrollo de una interfaz en google wave para un robot conversacional de una plataforma publicitaria

    OpenAIRE

    2011-01-01

    Las nuevas necesidades del mercado hacen que los usuarios que se conectan a Internet usen las redes sociales como principal canal de comunicación con sus amigos. La búsqueda de nuevos espacios publicitarios da origen a crear una aplicación que aproveche las capacidades de la red de un operador, para ofrecer al usuario interacciones útiles como el envío de SMS o MMS gratuitos a cambio de la recepción de publicidad. En Telefónica I+D ya existe un robot capaz de mantener conversaciones con los u...

  8. Open Ensis FSM : Aparato señalador de esgrima basado en LPC1769

    OpenAIRE

    2013-01-01

    Este proyecto desarrolla un aparato señalizador de esgrima o FSM (un dispositivo electrónico capaz de determinar si el arma de un esgrimista ha tocado la superficie válida del otro deportista en las condiciones de tiempo preestablecidas por el reglamento de esgrima), basado en la placa LPC1769 que permite la integración con un software de control remoto mediante un módulo WiFly RN-XV. Aquest projecte desenvolupa un aparell senyalitzador d'esgrima o FSM (un dispositiu electrònic capaç de de...

  9. Diseño de un elaborador VHDL

    OpenAIRE

    2009-01-01

    VHDL (VHSIC, Hardware Description Language) es un lenguaje de descripción hardware capaz de abarcar todo el ciclo de desarrollo de un sistema digital, desde los requisitos y necesidades iniciales hasta la simulación y validación del prototipo hardware de dicho sistema. Los lenguajes de descripción hardware se gestaron durante los años setenta, momento en el que se produjo un enorme desarrollo electrónico y tecnológico que provocó un cambio radical en los métodos de diseño de sistemas y de fab...

  10. Desenvolvimento de materiais de cátodo para baterias de ião lítio à base de polímeros condutores com dopagem pseudo-catiónica

    OpenAIRE

    Silva, Ariana Serralha Ribeiro

    2015-01-01

    Tese de mestrado integrado em Engenharia da Energia e do Ambiente, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2015 Com intuito de se encontrar cátodos com elevado desempenho para baterias de ião lítio, os fenómenos de transferência de massa que ocorrem durante a conversão redox de filmes electricamente condutores são estudados neste trabalho. O material de cátodo deve ser leve e capaz de incorporar lítio enquanto se descarrega a bateria (redução) e que o expuls...

  11. Aflatoxinas: mecanismos de toxicidad en la etiología de cáncer hepático celular

    OpenAIRE

    Urrego Novoa, José R.; Días, Gonzalo J.

    2014-01-01

    La aflatoxina B1 (AFB1), producida por algunoshongos del género Aspergillus, está entrelos más potentes carcinógenos conocidos. Suacción carcinogénica se basa en la biotransformaciónpor el sistema hepático microsomal P450a AFB1-8,9-epóxido, un intermediario altamentereactivo capaz de unirse a las proteínas, a losácidos ribonucleico y desoxirribonucleico; formandoun compuesto estable con el N7 de losresiduos guanil que puede causar mutaciones enel codón 249 del gen p53 supresor de tumores.Esta...

  12. La Representación en la Edificación Versus la Luz

    OpenAIRE

    Anta Fernández, Ignacio; Martinez Borrell, Eduardo; Valiente Lopez, Mercedes

    2010-01-01

    El hombre es un ser capaz de aprender y de utilizar lo aprendido, para transformar su entorno natural y social por medio de la tecnología. La historia del hombre, es la Historia de los avatares de un largo proceso de aprendizaje y de sus consecuencias en todos los órdenes. Nuestro objetivo, es el análisis de los instrumentos que en este momento se están utilizando en la representación en los planos de edificación, y su relación con la expresión gráfica de la luz en dichos planos. Ente...

  13. Aquisição e otimização de mapas de navegação usando redes neurais

    OpenAIRE

    2001-01-01

    A capacidade de encontrar e aprender as melhores trajetórias que levam a um determinado objetivo proposto num ambiente e uma característica comum a maioria dos organismos que se movimentam. Dentre outras, essa e uma das capacidades que têm sido bastante estudadas nas ultimas décadas. Uma consequência direta deste estudo e a sua aplicação em sistemas artificiais capazes de se movimentar de maneira inteligente nos mais variados tipos de ambientes. Neste trabalho, realizamos uma abordagem múltip...

  14. Argumentación rebatible en agentes adaptativos de escenarios dinámicos

    OpenAIRE

    Torres, Juan Manuel; Martínez, Diego C.; Simari, Guillermo Ricardo

    2013-01-01

    Un agente inteligente es una entidad computacional que se desenvuelve en un entorno mediante sensores y efectores, capaz de actuar sin intervención de otros agentes o humanos. Un agente adaptativo es aquel que tiene especial preparación para reaccionar a variaciones inesperadas en su entorno. En este contexto, el área de Juegos Generales se enfoca en la creación de agentes capaces de aceptar las reglas formales de un juego estratégico y utilizarlas para aprender a jugar. Esto potencia el avan...

  15. Redes sdh para transporte de señales xdsl

    OpenAIRE

    Moreta Cocha, Milton; Malave Borbor, Mario; Yepez Flores, Cesar

    2009-01-01

    Debido al acelerado crecimiento de las actuales redes de transmisión, demanda de nuevos servicios y aparición de nuevos operadores de red, nace una red que será capaz de soportar elevadas velocidades y ser altamente confiable como es la red SDH. XDSL es una tecnología que ofrece a los usuarios acceso de alta velocidad, para que la tecnología XDSL se convierten en realidad depende de la capacidad de los proveedores de servicios de Internet y las compañías telefónicas para desarrollar esto...

  16. Desenvolvimento de um circuito eletrônico experimental de anemômetro de fio quente

    OpenAIRE

    Eguti, Carlos César Aparecido [UNESP

    2005-01-01

    Anemômetros de fio quente são sensíveis instrumentos capazes de medir variações de velocidade nos mais diversos tipos de escoamentos, sejam eles gasosos ou líquidos. Um delicado filamento metálico é aquecido por uma corrente elétrica a qual gera calor por efeito Joule e transfere parte dessa energia para o escoamento incidente, sendo esta troca de calor proporcional a velocidade do fluído, definindo assim o princípio básico de funcionamento da anemometria de fio quente. Quando este filamento ...

  17. La contribución de la arquitectura de Enric Miralles y la vigencia de su método.

    OpenAIRE

    Mateo Vega, Jose Manuel

    2014-01-01

    El pensamiento y la obra del arquitecto español Enric Miralles (1955-2000) desde sus comienzos generó cambios significativos en la práctica de la arquitectura, con un posicionamiento critico y el empleo de unas herramientas proyectuales y un método de trabajo, que en opinión del autor del presente "abstract" todavía continúan hoy vigentes. La arquitectura de Enric Miralles fue capaz de aceptar la complejidad de la existencia contemporánea, consciente de la llegada de la globalización, la perd...

  18. Andares negros, caminos blancos (Lea Geler

    Directory of Open Access Journals (Sweden)

    Nicolás Fernández Bravo

    2011-01-01

    Full Text Available En cierta época, la antropología social se pensaba a sí misma como una disciplina capaz de “rescatar” las culturas olvidadas o en vías de desaparición y así “dar voz a los sin voz”. De este modo, muchas etnografías se construyeron (y aún hoy lo hacen implícitamente sobre esta premisa, cuya trampa radica en la imposibilidad de una tarea semejante.

  19. Patrimonio cultural y género como estrategia de desarrollo en Tepetlaoxtoc, Estado de México

    OpenAIRE

    Gema Lugo Espinosa; María del Pilar Alberti Manzanares; Oscar Luis Figueroa Rodríguez; Daniel Talavera Magaña; Juan Carlos Monterrubio Cordero

    2011-01-01

    El patrimonio cultural conforma la identidad de un pueblo, es capaz de desencadenar progreso en las comunidades desde una perspectiva holística. El objetivo del artículo es mostrar la infl uencia de género en la conservación y aprovechamiento del patrimonio cultural, y destacar la importancia de integrar la participación social de mujeres y hombres de forma equitativa para fortalecer la cohesión social y detonar procesos de desarrollo. Tres enfoques son el sustento teórico metodológico: pers...

  20. Characterization of commercial lecithins by easy ambient sonic-spray ionization mass spectrometry

    OpenAIRE

    Gabriel Deschamps Fernandes

    2012-01-01

    Resumo: Os fosfolipídios são definidos como o grupo de moléculas que contém um grupamento fosfato. Por apresentarem características anfipáticas, este grupo de moléculas se organiza naturalmente em bicamadas, originando as membranas dos seres vivos. Industrialmente são capazes de estabelecer interfaces óleo/água, possibilitando a formação e estabilização de emulsões. Este grupo de moléculas é bastante diverso quimicamente, sendo os principais componentes a fosfatidilcolina, fosfatidiletanolami...

  1. Dispositivo acoplable a servomotor para la rehabilitación de la articulación de la rodilla

    OpenAIRE

    Moya Esteban, Alejandro

    2016-01-01

    El objetivo de este Trabajo de Fin de Grado consiste en el desarrollo de un dispositivo mecánico, el cual gracias a un servomotor, sea capaz de realizar la movilización pasiva de la articulación de la rodilla en procesos de rehabilitación. Concretamente, se diseñará para producir un movimiento en torno al eje transversal de la articulación, con lo cual el movimiento producido será la flexoextensión. Actualmente, existen en el mercado varios dispositivos que realizan esta función. Sin embargo,...

  2. Onicomicoses: do Diagnóstico ao Tratamento

    OpenAIRE

    Kioshima, Érika Seki; Oliveira, Ana Carla Pozzi; Svidzinski, Terezinha Inez Estivalet

    2008-01-01

    Onicomicose é um termo amplo atribuído às infecções fúngicas que atingem as unhas. Quando causada por dermatófitos, é denominada manter ungueal, e quando por leveduras, oníquias. Há ainda as paroníquias que são infecções ao redor das unhas. Os dermatófitos são fungos queratinofílicos capazes de parasitar tecidos queratinizados do homem, de animais ou restos de queratina encon...

  3. E-Pintxo. Un proyecto de software art para entender la creatividad en la cocina

    OpenAIRE

    Casacuberta, David; Bellonzi, Marco

    2012-01-01

    E-Pintxo es un proyecto que combina cocina, inteligencia artificial y el arte de las vanguardias. La misión es desarrollar una interficie interactiva con el lenguaje de programación Processing que combine premisas del movimiento Futurista con propuestas y técnicas de la gastronomía molecular y otras disciplinas avanzadas de la cocina. A través de un algoritmo y una base de datos este sistema es capaz de inventar pintxos que resulten a la vez sensorialmente interesantes, posibles técnicamente ...

  4. Primera cita de reproducción de cigüeñuela común Himantopus himantopus L., 1758 en Urdaibai (Bizkaia

    Directory of Open Access Journals (Sweden)

    ARIZAGA, J., AZKONA, A., CEPEDA, X., MAGUREGI, J., UNAMUNO, E., UNAMUNO, J.M.

    2012-01-01

    Full Text Available La colonización del Cantábrico por la cigüeñuela común Himantopus himantopus L., 1758 es un fenómeno reciente (se cita por primera vez en 2009 en Asturias y Cantabria. En 2012, y por primera vez para Urdaibai y la costa vasca, se constata la reproducción de cigüeñuela en la laguna de Orueta, en el municipio de Gautegiz-Arteaga (Bizkaia. En particular, una pareja fue capaz de sacar adelante 3 pollos.

  5. Valoración de una empresa turística, Caso Oliva Nova

    OpenAIRE

    MEJÍAS RAMÍREZ, LUIS

    2013-01-01

    La intención de este proyecto es establecer un procedimiento para determinar el valor global de una empresa privada. Evidentemente nos centraremos en empresas del sector turístico, y aplicaremos las medidas mas objetivas posibles para garantizar, en la mayor medida, un criterio capaz de conseguir estimar un valor real de mercado, y no un valor especulativo o desfavorable para alguna de las dos partes que intervienen, por ejemplo, en la compraventa de una empresa como un todo unitario. Mejí...

  6. A Numerical Study of the Plata River Plume Along the Southeastern South American Continental Shelf

    Science.gov (United States)

    2005-01-01

    banda de baixa salinidade formou-se desde o estu•.rio atW 30"N na plataforma continental sul brasileira. 0 efeito de ventos de sudoeste, que causam...distribuiqdo de baixa salinidade 6 muito mais sensivel A direggo dos ventos do que A descarga fluvial. Ventos de sudoeste sao capazes de advectar o sinai...de baixa salinidade ao longo da costa. JA os ventos de nordeste demonstram ser eficientes na erosgo da pluma, que 6 destacada da costa por deriva de

  7. La Lever house, New York

    OpenAIRE

    Sergio Miguel

    2012-01-01

    Resumen

    En el último siglo la mítica ciudad de Nueva York ha sido capaz de definir y transmitir las más contagiosas propuestas de  construcción del futuro.
    El edificio de la Lever House, erigido en el corazón de Manhattan al comienzo de la prodigiosa década de los cincuenta, consiguió ser la constatación de que el perseguido sue&am...

  8. Estudo da mobilidade de oxigênio intersticial em Bi2Sr2CaCu2O8+δ através de espectroscopia anelástica

    OpenAIRE

    Juliana Maria de Albuquerque Gimenez

    2004-01-01

    Desde a descoberta dos supercondutores com alta temperatura crítica, muitos estudos têm sido realizados em tomo de suas propriedades fisicas, tentando associá-Ias à supercondutividade. Átomos de oxigênio dissolvidos intersticialmente têm um papel importante na supercondutividade destes materiais, pois são capazes de mover-se com facilidade dentro da rede além de contribuírem na criação de buracos nos planos de CUO2. As medidas de atrito interno são ferramentas sensíveis ao estudo de defeitos ...

  9. El zapatismo en la literatura mexicana: el caso de Juan Villoro

    OpenAIRE

    Manuel Lario Bastida

    2016-01-01

    El zapatismo chiapaneco es un movimiento sociopolítico que ha utilizado mucho, y de forma afortunada, el discurso como arma de combate, capaz de construir un relato que le fuera favorable para ganar el apoyo social del pueblo mexicano. Ese discurso ha sido, además, eminentemente literario, de la mano de los relatos y novelas que ha firmado su portavoz, el subcomandante Marcos. Así, vemos como el impacto del EZLN ha sido notable en la literatura mexicana y en muchos otros países. En este artí...

  10. La historiografía colonial cubana y la modernidad

    OpenAIRE

    Arturo Sorhegui

    2013-01-01

    El núcleo argumental de este artículo es demostrar como la historiografía hispanoamericana –tomando como muestra la cubana, en la época colonial– fue capaz de propiciar, por si misma, algunas de las tendencias historiográficas establecidas como corrientes en el siglo XIX europeo, en la medida que debió enfrentarse a las mismas problemáticas que en Europa le dieron origen; lo único que adecuadas a las circunstancias de la realidad americana. Se argumenta con la historiografía criolla iluminist...

  11. A comédia desclassificada de Martins Pena

    Directory of Open Access Journals (Sweden)

    Iná Camargo Costa

    1989-01-01

    Full Text Available Após indicar o caráter ideológico de conceitos básicos habitualmente mobilizados em análises da literatura dramática, este estudo tenta mostrar que é possível enxergar mais longe quando nos livramos dos limites por eles impostos. Detectada a fundamentação classista da história do teatro no Brasil, a luta ideológica aparece como um refletor capaz de iluminar aspectos normalmente obscurecidos das comédias de Martins Pena.

  12. Regulación de la familia de proteínas BCL-2 en células infectadas con Chlamydia trachomatis

    OpenAIRE

    Jutinico Shubach, Adriana Paola; Mantilla Galindo, Alejandra; Sánchez Mora, Ruth Mélida

    2015-01-01

    El presente artículo revisa los mecanismos inhibitorios de la apoptosis usados por Chlamydia trachomatis (Ct) frente a la familia de proteínas Bcl-2, para lograr su supervivencia intracelular. Chlamydia trachomatis es una bacteria intracelular obligada Gram negativa responsable de la infección de transmisión sexual más común en el mundo; este microorganismo es capaz de inhibir la apoptosis de la célula huésped durante su ciclo de desarrollo, obteniendo un refugio seguro para su supervivencia....

  13. Análise proteômica, crescimento e composição celular da microalga Chlorella vulgaris sob autotrofia, mixotrofia e heterotrofia

    OpenAIRE

    2015-01-01

    Algumas espécies de microalgas podem alterar o tipo de metabolismo como uma resposta às mudanças nas condições ambientais. A Chorella vulgaris (C. vulgaris) é um exemplo de microalga capaz de crescer tanto sob condições de autotrofia (com CO2 e luz), quanto heterotrofia (com glicose, sem luz, sem CO2) e mixotrofia (com glicose, CO2 e luz). Embora já existam alguns estudos acerca dos diferentes modos de crescimento citados, o conhecimento do funcionamento da célula a nível molecular ainda é li...

  14. Referentes internacionales para el giro reformista de la izquierda chilena (1975-1990

    Directory of Open Access Journals (Sweden)

    Marcelo Mella Polanco

    2011-01-01

    Full Text Available El presente artículo analiza el giro reformista de la izquierda chilena durante el régimen autoritario de Pinochet. Para lograrlo, se expone cómo la penetración de ideas provenientes del marxismo analítico homogeneizó un importante sector de intelectuales y expertos opositores de Pinochet, constituyendo, de esta forma, un nuevo mainstream político-académico capaz de renovar los marcos epistémicos de las ciencias sociales y diseñar la transición a la democracia.

  15. Dosimetria interna de radiofármacos derivados de polipeptídeos antitumorais isolados dos venenos de: Crotalus durissus terrificus e Scorpaena plumieri

    OpenAIRE

    Henrique Martins de Andrade

    2009-01-01

    A identificação de novos agentes terapêuticos e diagnósticos capazes de inibir o crescimento tumoral é essencial para melhoria no prognóstico de pacientes acometidos por tumores malignos (glioma, mama dentre outros). Nesse contexto, produtos naturais (vegetais e animais) constituem-se numa rica fonte de substâncias com potencial antitumoral. Polipeptídeos isolados dos venenos da serpente Crotalus durissus terrificus (Crtx) e do peixe Scorpaena plumieri (SPGP), apresentam atividade...

  16. Algoritmos de Propagación I: Métodos Exactos

    OpenAIRE

    1998-01-01

    Un Sistema Experto es una herramienta informática que es capaz de simular el comportamiento de un experto humano en una materia especializada. Un problema clave en el desarrollo de sistemas expertos es encontrar la forma de representar y usar el conocimiento que los expertos humanos en esa materia poseen y utilizan. Este problema se hace más difícil por el hecho de que. En muchos campos, el conocimiento de los expertos es a menudo impreciso o incierto y. sin embargo, los expertos son capaces ...

  17. Desarrollo de un sistema hiperespectralpara la medida del color en muestras extensas con patrones especialmente complejos

    OpenAIRE

    Ferrer Serrano, Edgar; Vilaseca Ricart, Meritxell; Pujol Ramo, Jaume; Arjona Carbonell, Mª Montserrat

    2010-01-01

    Cada vez son más los distintos dispositivos para la medida del color basados en sensores optoelectrónicos de imagen. En los últimos años se ha generalizado el uso de sistemas multiespectrales y, en particular, se han empezado a emplear sistemas hiperespectrales que combinan un sistema espectrográfico con una cámara monocromática capaz de realizar medidas de alta calidad con información espectral y espacial. Además, estos sistemas tienen la ventaja de proporcionar el espectro de cada uno de l...

  18. Valoración del desempeño de un dispositivo de autoalimentación diseñado para la evaluación operativa de electrodos revestidos

    OpenAIRE

    2009-01-01

    El presente trabajo tiene como objetivo valorar la efectividad de un dispositivo de autoalimentación para electrodos revestidos. El mismo es capaz de eliminar perturbaciones inherentes a operarios o sistemas de control automático, para el estudio del comportamiento de electrodos revestidos. La conjugación de diferentes métodos, tales como el análisis estadístico del tiempo de duración del cortocircuito, el análisis metalográfico ( penetración, zona afectada por el calor, coeficiente de forma ...

  19. Identification and evaluation of bacteria isolated from roots of maize

    OpenAIRE

    Eliamar Aparecida Nascimbém Pedrinho; Renato Fernandes Galdiano Júnior; João Carlos Campanharo; Lúcia Maria Carareto Alves; Eliana Gertrudes de Macedo Lemos

    2010-01-01

    Estudos sobre a atividade microbiológica que ocorre na rizosfera de diversos vegetais levaram ao descobrimento de grupos de microrganismos importantes para o desenvolvimento vegetal. Dentre eles estão as rizobactérias que são capazes de colonizar as raízes, estimulando-a diretamente ou beneficiando o crescimento e o desenvolvimento de diversas plantas. Estas bactérias são chamadas Rizobactérias Promotoras de Crescimento em Plantas (RPCP). Este trabalho teve o objetivo de isolar, identificar, ...

  20. Estabilização da articulação femorotibiopatelar com a fixação dupla da fáscia lata após ruptura experimental do ligamento cruzado cranial em cães

    OpenAIRE

    Duarte, Tatiana Schmitz

    2011-01-01

    A ruptura do ligamento cruzado cranial é a terceira maior causa de problemas ortopédicos em cães. Inúmeras são as técnicas cirúrgicas descritas para restabelecer a estabilidade da articulação femorotibiopatelar após a ruptura deste ligamento. No entanto, nenhuma delas é capaz de proporcionar completa estabilidade e inibir a doença articular degenerativa. O presente estudo avaliou a eficiência de uma nova técnica cirúrgica com componentes intra e extracapsulares utilizando enxerto da fáscia...

  1. Aplicação de um sistema de multi-sensores para a detecção de gliadinas: discriminação semi-quantitativa entre alimentos com glúten e sem glúten

    OpenAIRE

    Meirinho, Sofia G.

    2009-01-01

    A doença celíaca caracteriza-se pela intolerância ou hipersensibilidade à ingestão de prolaminas existentes no trigo, centeio, cevada e aveia. As proteínas do glúten do trigo contêm aproximadamente 50% de prolaminas, denominadas por gliadinas. O tratamento para a doença celíaca consiste em fazer uma dieta livre de glúten. Assim sendo, torna-se imperativo dispor de metodologias analíticas capazes de detectar e quantificar o teor de glúten em alimentos, especialmente em alimentos...

  2. Estruturas flexíveis multicamada para gestão de humidade

    OpenAIRE

    Madeira, Manuela José Cubelo Torres da Fonseca e

    2009-01-01

    O conforto é uma necessidade para a maioria das pessoas. A busca de vestuário que se adapte às condições ambientais tornou-se essencial. Queremos materiais que nos mantenham quentes ou frescos, em condições de frio ou calor, e sejam capazes de nos manter secos se chover, ou se transpirarmos, devido a actividade intensa, ou simplesmente porque está quente. O objectivo principal deste trabalho era desenvolver uma estrutura multicamada respirável, para posterior aplicação num sapato perfurado...

  3. Reivindicaciones zapatistas, una constante en la historia de México

    OpenAIRE

    González Ferrer, Amparo

    1996-01-01

    A pesar del tiempo transcurrido, para los indígenas chiapanecos las condiciones económicas y sociales, apenas han variado respecto de aquéllas a las que, en su día, tuvo que enfrentarse Emiliano Zapata. Así pues, no es de extrañar el arraigo logrado por el EZLN, movimiento popular que, heredando la tradición de lucha zapatista, ha sido capaz de adaptar ésta a la nueva situación histórico-política de México, corrigiendo muchos de los errores que condenaron al fracaso las demandas de Zapata y d...

  4. Um modelo de exclusão assimétrico para o transporte de partículas mediado por motores moleculares

    OpenAIRE

    Elisa Thomé Sena

    2008-01-01

    Motores moleculares são proteínas capazes de transportar objetos tais como vesículas, organelas e macromoléculas ao longo do citoesqueleto. Tratam-se de dispositivos bastante interessantes do ponto de vista físico, pois produzem trabalho em um ambiente extremamente ruidoso. Recentemente, diversos experimentos realizados in vivo têm revelado que objetos transportados por motores moleculares ao longo dos microtúbulos apresentam movimento bidirecional. Embora o movimento unidirecional dos motore...

  5. O demônio de Maxwell e os motores moleculares

    OpenAIRE

    Goldman, Carla

    2014-01-01

    O transporte ativo nas células é efetuado por certas proteínas, ou motores moleculares como são conhecidas na literatura, capazes de realizar trabalho mecânico em um meio onde predominam forças viscosas. Os mecanismos físicos que regem o movimento dos motores moleculares se inserem no contexto dos processos estocásticos. O modelo padrão introduzido nos anos 90 por Adjari e Prost e por Magnasco para descrever movimento direcionado nesta situação é revisto de maneira pedagógica. Um dos objetivo...

  6. Implicaciones teóricas y metodológicas de la evolución de la investigación en Contabilidad de Gestión

    OpenAIRE

    2002-01-01

    El objetivo de este trabajo es conocer la evolución y el estado actual de la Contabilidad de Gestión, así como plantear las que parecen perfilarse como tendencias de investigación en esta área. Para ello, entendemos la Contabilidad de Gestión de forma amplia como un sistema de información capaz de suministrar toda la información relevante para la gestión empresarial. En concreto, hemos analizado los enfoques teóricos, los métodos de investigación y las cuestiones abordadas en Contabilidad de ...

  7. ¿Es realmente arbitraria la relación entre las palabras y sus significados?

    OpenAIRE

    José Antonio Villén Raya; Francisco José Pérez Díaz; Ana Cristina Martín Jiménez

    2015-01-01

    Desde Saussure, el lenguaje ha sido caracterizado como un sistema arbitrario en el que no existe ningún tipo de relación entre el significante y el significado, más allá de la que se genera por convención social. Los estudios más recientes no apoyan esta hipótesis por completo, sugiriendo que el cerebro humano es capaz de establecer relaciones entre sonidos y formas en función de las características de ambos. Esta capacidad de relacionar los sonidos y las formas está programada en nuestro cer...

  8. Uso de simuladores y TICs en educación

    OpenAIRE

    Zabalegui Goicoechea, Juan Antonio

    2014-01-01

    En este trabajo se trata la problemática que se manifiesta en Centros de Educación Secundaria, en especial los Cursos de Preparatorio para la Prueba de Acceso a Grado Superior. En general la disponibilidad de recursos, talleres y/o laboratorios, es escasa. El alumnado se encuentra con problemas para poner en práctica lo aprendido en las clases teóricas. En esta situación, el alumnado no es capaz de relacionar la teoría explicada en clase y la utilidad práctica de la misma. Consecuentement...

  9. Las TICs en la enseñanza superior

    OpenAIRE

    Rosanigo, Zulema Beatriz; Paur, Alicia Beatriz; Bramati, Pedro; Bramati, Hernán

    2006-01-01

    Nuestro objetivo general es la investigación continua de nuevos medios de educación que puedan servir para optimizar el proceso de enseñanza aprendizaje sabiendo que la sociedad actual exige la formación de un futuro profesional apto en el manejo de las últimas tecnologías y capaz de procesar y elaborar activamente los nuevos conocimientos. En este artículo se presentan los temas de investigación, desarrollo y experimentación sobre los que este grupo de la Universidad Nacional de la Patago...

  10. El cartel cinematográfico como manifestación artística y publicitaria. Los diseños de Juan Gatti

    OpenAIRE

    Domingo Gutiérrez, Carmen

    2015-01-01

    El cartel publicitario se posiciona como uno de los medios publicitarios más eficaces dentro de la sociedad, cada día más cambiante, que tiende a la digitalización y modernización de todo lo que les rodea. Partiendo de su eficacia publicitaria, nos centraremos en una de sus variantes, el cartel cinematográfico. Un medio capaz de mover masas con un único golpe de vista, pues no olvidemos que una película es, al fin y al cabo, un producto de masas y el cartel cinematográfico su cara al público....

  11. Efeitos cardioprotetores da Catuama® e seus componentes sobre o coração isolado de ratos submetidos a isquemia e reperfusão

    OpenAIRE

    Ana Lidia Corrêa da Silva Moreira

    2012-01-01

    Há mais de 20 anos a Catuama® vem sendo utilizada contra fadiga física e mental, disfunção sexual e astenia muscular. Nos últimos anos, diversos estudos demonstraram efeitos como ação antinociceptiva, antidepressiva, neuroprotetora, vasodilatadora e dilatadora dos corpos cavernosos. Dados do Laboratório de Investigação Médica da Disciplina de Emergências Clínicas da FMUSP (LIM-51) demonstraram que a Catuama® é capaz de reverter e prevenir a fibrilação ventricular (FV) induzida em coração isol...

  12. DETERMINACIÓN DEL GEN aac(6´)-aph(2´´) ASOCIADO CON RESISTENCIA A AMINOGLUCÓSIDOS EN CEPAS DE STAPHYLOCOCCUS COAGULASA NEGATIVA EN UNA UNIDAD NEONATAL EN BOGOTÁ Detection of gene aac(6´)-aph(2´´) in associated with aminoglucosides resistance in Staphylococcus coagulase-negative strains isolates from one neonatal unit in Bogota

    OpenAIRE

    Liliana Muñoz M; Gladys Pinilla B; Ariel I Ruiz-Parra; Yolanda Cifuentes C; Eva A Gallego

    2009-01-01

    Antecedentes. La causa más común de resistencia a antibióticos aminoglucósidos en bacterias Gram positivas, especialmente en S. epidermidis, es la enzima modificante AAC(6’)-APH(2"), capaz de acetilar y fosforilar un amplio rango de antibióticos. Objetivo. Determinar la presencia del gen aac(6’)-aph(2") en cepas de Staphylococcus coagulasa negativa aisladas en infecciones neonatales, e investigar la concordancia con las pruebas de sensibilidad in-vitro. Material y métodos. Se determinó la pre...

  13. Guerra en el paraíso de Carlos Montemayor: representación del monstruoso Estado mexicano

    OpenAIRE

    Pérez-Anzaldo, Guadalupe

    2016-01-01

    La novela de Carlos Montemayor, Guerra en el paraíso, es analizada a partir de la simbología que en ella persiste en relación a la monstruosidad del Estado mexicano. De acuerdo con la conceptualización hecha por Tomás Hobbes, el Estado es como un Leviatán o monstruo gigante a quien los ciudadanos le confieren el poder absoluto buscando ser protegidos de las agresiones de los demás. En la emisión representacional de la novela de Montemayor, el Estado mexicano es un engendro capaz de cometer sa...

  14. Retos y perspectivas de la Educación Superior

    Directory of Open Access Journals (Sweden)

    Carlos Tünnermann Bemheim

    2000-12-01

    Full Text Available Las características de una educación superior capaz de hacer frente a las demandas de los próximos años, - los primeros de un nuevo siglo y un nuevo milenio, durante los cuales asistimos, además, a un cambio de épocas - , son analizados en este trabajo. Para ello, el autor se apoya en los aportes de diferentes documentos internacionales sobre este asunto, en las reflexiones del ex Director General de la UNESCO, Profesor Federico Mayor Zaragoza y, sobre todo, en su propia dilatadísima experiencia en el ámbito universitario.

  15. Sistema de localización y mapeado simultáneo basado en visión estereoscópica para la asistencia a la navegación de vehículos en grandes entornos

    OpenAIRE

    Schleicher Gómez, David

    2009-01-01

    En esta Tesis se presenta un nuevo sistema jerárquico de localización y mapeado simultáneos (SLAM: Simultaneous Localization and Mapping) en tiempo real, aplicado a la localización robusta de un vehículo en grandes entornos exteriores de tipo fundamentalmente urbano, siendo capaz de mejorar los sistemas de asistencia a la navegación actuales, basados únicamente en GPS. Además, esta propuesta podría utilizarse en sistemas de navegación autónoma con trayectorias recurrentes, como por ejemplo, ...

  16. La Casa autosuficiente

    OpenAIRE

    Mallorquín Colina, Dídac

    2008-01-01

    Una casa autosuficiente es aquella que para satisfacer las necesidades del usuario no depende de ningún organismo externo. Se caracteriza por ser capaz de conseguir sus objetivos sin dañar el medio ambiente, es ecológica, y además, cuenta con la tecnología más avanzada para hacer la vida más cómoda y segura al usuario. En este caso la vivienda ha sido diseñada para ser energéticamente autosuficiente, subministrando calefacción, ACS y electricidad mediante una instalación fotovoltaica y u...

  17. Indirect measurement of photosynthetic pigments in the leaves of Jatropha curcas
    Quantificação indireta de pigmentos fotossintetizantes em folhas de Jatropha curcas

    OpenAIRE

    João Paulo Gonsiorkiewicz Rigon; Silvia Capuani; José Félix de Brito Neto; Napoleão Esberard de Macêdo Beltrão

    2013-01-01

    O objetivo do presente trabalho foi gerar modelos matemáticos capazes de reportar os pigmentos fotossintéticos e proteína solúvel nas folhas de Jatropha curcas por meio da relação entre leituras realizadas por espectrofotometria clássica e por clorofilômetro, ClorofiLOG® 1030. O trabalho foi realizado na Embrapa Algodão, na cidade de Campina Grande (PB). Para a análise indireta, foi usado o equipamento portátil para leituras em discos foliares com diferentes estádios de desenvolvimento. A clo...

  18. Identification and Removal of Noise in Cardiac Signals (CARDIO-NOISE)

    OpenAIRE

    Nunes, Diogo Barreiro

    2016-01-01

    O envelhecimento da população e o estilo de vida sedentário da sociedade atual resulta numa maior procura de serviços hospitalares, serviços esses incapazes de balancear eficazmente a procura com a oferta [1]. Este problema levou a desenvolver sistemas automáticos capazes de recolher informações vitais no dia-a-dia dos pacientes, e através destas avaliar possíveis patologias, sem que os pacientes se deslocassem aos serviços hospitalares, levando assim a um alívio na procura e custo de consult...

  19. ECG signal analysis with wavelets and neural networks in FPGA

    OpenAIRE

    Klaus Raizer

    2010-01-01

    Resumo: Este trabalho apresenta a implementação de um sistema de análise de sinais de ECGs (eletrocardiogramas) embarcado em FPGA (field programmable gate array), capaz de classificar cardiopatias. A análise de ECGs é de grande importância devido a sua natureza potencialmente não-invasiva, baixo custo e alta eficiência na identificação de patologias cardíacas. Visto que um sinal de ECG pode ser composto por horas de gravação da atividade cardíaca, uma abordagem computacional para a sua anális...

  20. Desarrollo de un instrumento para adquisición y procesado de EEG (Electro-encefalograma) y ECG (Electro-cardiograma)

    OpenAIRE

    Cañas Casco, Santiago

    2015-01-01

    Diseño y construcción de un aparato de bajo costo para adquisición y procesamiento de señales bioeléctricas, compuesto por un hardware capaz de amplificar y filtrar las señales, y por un instrumento virtual basado en labVIEW encargado de la adquisición de los distintas bioseñales y de su procesamiento en tiempo real. Este sistema permitirá dar soporte diagnóstico en modelos animales con desórdenes neurológicos sometidos a diferentes tipos de intervención terapéutica.

  1. Determinantes situacionais e individuais da aprendizagem em ensino a distância: desenvolvimento de escala = Situational and individual determinants of learning in distance education: development of scale

    OpenAIRE

    Meneses,Pedro Paulo Murce; ZERBINI, Thaís; Martins,Lara Barros

    2012-01-01

    A educação a distância, apesar de alternativa para a democratização do acesso ao ensino profissional e acadêmico, carece de estudos que expliquem suas altas taxas de evasão. O presente artigo objetivou construir e validar um instrumento que aborda características dos aprendizes, aspectos contextuais de estudo e outros referentes ao curso, capazes de afetar a permanência do alunado. A escala Determinantes Situacionais e Individuais da Aprendizagem em Ensino a Distância foi submetida à validaçã...

  2. A crise financeira de 2008 : uma interpretação teórica heterodoxa

    OpenAIRE

    Leonardo Flauzino de Souza

    2012-01-01

    Resumo:A crise econômica de 2008 pode ser analisada pelo arcabouço das teorias keynesianas, em especial a partir das interpretações em torno da teoria da preferência pela liquidez. Esta foi elaborada primeiramente na Teoria Geral de Keynes, mas alcançou interpretações muito diversas nas obras de Kaldor, Hicks, Davidson e Minsky. As idéias expostas por estes autores são capazes de fornecer algumas explicações sobre as escolhas de ativos, em especial os relacionados aos mercados financeiros, e ...

  3. Actualidad y Derecho: cómo mejorar la comprensión del Derecho civil a través de las noticias

    OpenAIRE

    2015-01-01

    A todo buen profesor le preocupa que sus alumnos y alumnas entiendan el contenido de la asignatura, pues sólo así podrán asimilar de forma óptima los contenidos. En el primer curso del Grado en Derecho confluyen asignaturas introductorias que dificultan que el alumnado -que aún no es capaz de utilizar conceptos de forma multidisciplinar-, delimite la problemática de cada una de ellas. Por ello, pretendemos que los alumnos y alumnas consulten la prensa y/o telediarios (lo que redunda en la mej...

  4. Aplicación en entorno gráfico para el control de un sistema microposicionador motorizado

    OpenAIRE

    Mora Rus, Sebastián

    2011-01-01

    El objetivo general del presente proyecto es mejorar algún aspecto mecánico y, fundamentalmente, software del microposicionador, y ante todo, dar una solución alternativa al modo autónomo del microcontrolador diseñando una interfaz capaz de comunicarse, controlar y convivir con todo el sistema mediante el programa LabVIEW. A lo largo de este documento de memoria del proyecto desarrollado se describirá el diseño, desarrollo e implementación del software necesario para comunicar el sistema micr...

  5. Determinación de la conductividad térmica en nanohilos mediante efecto fotoacústico

    OpenAIRE

    Solís Martín, David

    2010-01-01

    El presente proyecto, tiene como objetivo el diseño e implementación de un sistema de instrumentación electrónico, capaz de determinar la conductividad térmica de nuevos materiales, mediante el efecto fotoacústico. La medición fotoacústica se enmarca dentro de los análisis no destructivos y presenta una clara ventaja en la medición de matrices nanoestructuradas dado que no precisa de contacto mecánico con la muestra. La celda fotoacústica desarrollada se ha optimizado acorde al objetivo de ha...

  6. Administración y actualización de un erp, basado en metodologia pmi.

    OpenAIRE

    Aguirre , Marcelo; Cedeño, Melida; Freire, Lenín

    2011-01-01

    Muchas empresas enfrentan el reto de poder implementar o actualizar sus sistemas en plazos establecidos convencidos de que su inversión sea la mejor decisión tomada, desde ese momento existen una serie de interrogantes para poder evaluar y determinar el mejor camino para lograr un solo objetivo, el sistema integrado o erp capaz de poder gestionar y administrar la información que genera el negocio. Bien, PMP(Project Management Program) es la metodología que integra las áreas de conocimiento...

  7. Sistemas de información geográfica y algoritmos de optimización aplicados a problemas geoespaciales en la administración de tierras

    OpenAIRE

    Porta Trinidad, Juan

    2013-01-01

    [Resumen] La tierra es un factor estratégico de suma importancia en el desarrollo de una determinada región. La tierra ha de ser considerada como un bien capaz de generar crecimiento económico y de la que hay que intentar sacar el máximo provecho. Esta tesis aplica las nuevas tecnologías a procesos de la Administración de Tierras que hasta ahora o bien no se hacían, o bien se hacían de forma rudimentaria. Uno de estos procesos es la ordenación territorial que, por su propia naturaleza, involu...

  8. Effect of whey proteins in the system defense HSP 70 and biochemical parameters in rats

    OpenAIRE

    Carolina Soares de Moura

    2012-01-01

    Resumo: As heat shock proteins (HSPs), ou proteínas do estresse, correspondem a um importante sistema de defesa celular que é capaz de proteger e reparar danos causados ao organismo, conferindo à célula maior tolerância e resistência contra situações de alteração na homeostase, sendo também consideradas como um sistema antioxidante complementar. A glutamina é conhecida pelo seu potencial em promover o aumento na HSP70 contra diversas situações agressoras. As proteínas do soro do leite (PSL) c...

  9. Propagación del desgarro de tejido biológico empleado en la construcción de bioprótesis cardíacas en función de la forma y el tipo de sutura

    OpenAIRE

    2008-01-01

    En este trabajo hemos estudiado la fuerza necesaria para propagar un desgarro en un tejido de pericardio de avestruz, tejido alternativo y en estudio para la fabricación de bioprótesis cardiacas. Se analiza la influencia de dos de las suturas más empleadas en cirugía cardiovascular: Prolene® y Gore-Tex®, en este comportamiento mecánico. El tejido se suturó de dos formas distintas borde-borde y en solapa. Para los ensayos se utilizó un péndulo Elmendorf capaz de medir, la fuerza necesaria pa...

  10. Metros descuadrados

    OpenAIRE

    Pérez, David

    2012-01-01

    «¡Imposible! ¿Cómo van a caber 10 000 cuadraditos de esos ahí dentro». Pero Iván fue capaz de convencer a Patricia con el trabajo de ambos. Emociona ver los rostros de los alumnos cuando son capaces de demostrar sus argumentos cooperativamente. Partiendo de la construcción de un metro cuadrado con papel de periódico como primera actividad, nos adentramos en un mundo -en inicio insospechado- que nos acaba ofreciendo formidables posibilidades didácticas y una gran satisfacción. Es ese buen sabo...

  11. Brumas y claros en el dibujo animado

    OpenAIRE

    Carmen Cantillo Valero; Sara Osuna Acedo

    2016-01-01

    El cine, con su extraordinaria cualidad comunicativa, emociona, entusiasma y enternece a las personas que se someten a su influencia y conforma nuestra identidad. Desde los rituales mágicos de la prehistoria hasta las más sofisticadas técnicas del neuromarketing, se han utilizado estrategias de excitación emocional para envolver al público en un estado onírico capaz de transformar sus esquemas mentales. En este artículo se abordan las teorías que sustentan la percepción de la visión de una im...

  12. Patrones caracterizadores de la forma periurbana: parametrización de la relación huerta-ciudad en el Área Metropolitana de Valencia

    OpenAIRE

    Monleón Balanzá, Daniel

    2014-01-01

    Tras la aparición, en la década de los 70 del siglo pasado, del “Urban Design” (Diseño Urbano) como una nueva disciplina y práctica instrumental capaz de hacerse cargo de la forma de la ciudad y el diseño del espacio urbano, y tras un largo periodo de crisis del planeamiento urbano iniciado a principios de los 90, en el que el carácter instrumental del Plan ha adquirido mayor trascendencia que la componente proyectual del mismo, se constata la necesidad actual de poner en valor la...

  13. Historia del contenido bariónico de las galaxias Enanas

    OpenAIRE

    Benitez Llambay, Alejandro

    2015-01-01

    Tesis (Doctor en Astronomía)--Univesidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2015. Las galaxias enanas son los objetos extragalácticos más comunes en el Universo y cualquier teoría exitosa sobre la formación y evolución de galaxias debería ser capaz de predecir y explicar sus características principales. El modelo cosmológico aceptado actualmente, que asume un Universo de materia oscura fría dominado por una constante cosmológica (LCDM por sus siglas...

  14. Análise comparativa entre a universidade corporativa caixa e o modelo de meister

    OpenAIRE

    Fernandes, Gilmar Hollerweger

    2005-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia de Produção O alto investimento efetuado pelas organizações em treinamento e desenvolvimento dos trabalhadores é uma das alternativas utilizadas para preencher os espaços deixados pela educação formal entre a capacitação atual da força de trabalho e as competências exigidas no mundo corporativo. O processo de formação do novo perfil de trabalhador, que é capaz de se...

  15. Modelo computacional para desenvolvimento do sistema de avaliação para aparelhos de raios X odontológicos intraorais: Cartão Dosimétrico Odontológico

    OpenAIRE

    José Mesquita Menezes, Cláudio

    2008-01-01

    Em decorrência da necessidade de diagnóstico em tratamentos dentários, a Radiologia Odontológica está cada vez mais presente no dia-a-dia da população. Atualmente, vários profissionais da área de Radioproteção e Dosimetria vêm realizando estudos no sentido de oferecer sugestões para minimizar as exposições individuais e da população aos exames de raios X. Em vista disto, um grande número de empresas e pesquisadores tem trabalhado no desenvolvimento de instrumentos capazes de...

  16. Desenvolvimento de membranas íon-seletivas com poliestireno sulfonado e polianilina dopada para a aplicação em eletrodiálise

    OpenAIRE

    Marcela Pinheiro Proença

    2009-01-01

    Atualmente, a preocupação com a redução da poluição industrial tem motivado os pesquisadores na busca de novas tecnologias para o tratamento de resíduos industriais. Tecnologias limpas, como a eletrodiálise, são capazes de tratar alguns destes resíduos, como por exemplo o efluente da indústria de galvanoplastia, minimizando os impactos que ocorreriam caso eles fossem descartados diretamente no meio ambiente. O componente principal desta técnica é a membrana na qual ocorre a etapa de retirada ...

  17. Prevención y control de legionelosis en instalaciones de riesgo

    OpenAIRE

    Martín Redondo, Álvaro

    2016-01-01

    Legionella es una bacteria ambiental capaz de sobrevivir en un amplio intervalo de condiciones físico-químicas, existen 48 especies con más de 70 serogrupos, siendo Legionella pneumophila el agente causal que más frecuentemente produce legionelosis, enfermedad de declaración obligatoria, en la cual se distinguen dos formas clínicas claramente diferenciadas: la infección pulmonar o “Enfermedad del Legionario” que se presenta con neumonía y fiebre alta, y la forma no neumónica conocida como “Fi...

  18. Aprendendo fun??es de ranking baseadas em blocos usando programa??o gen?tica

    OpenAIRE

    Sanchez, Pedro Antonio Gonzales

    2013-01-01

    Na atualidade, a Internet ? considerada uma poderosa ferramenta de comunica??o e informa??o. Seu impacto na sociedade est? aumentando cada vez mais, o que significa que est? se tornando indispens?vel. Neste contexto, sistemas de busca por informa??o tornam-se cada vez mais importantes. Neste trabalho, propomos um novo m?todo de busca capaz de aprender fun??es de ranking que exploram a estrutura em bloco das p?ginas Web, usando programa??o gen?tica. Diferentemente de trabalhos anteriores, noss...

  19. Caracterização de terminadores e promotores para otimização do fluxo metabólico de xilose em Saccharomyces cerevisiae linhagem industrial PE-2 : Characterization of promoters and terminators to optimize the metabolic flux of xylose in Saccharomyces cerevisiae industrial strain PE-2

    OpenAIRE

    Gabriel Vieira Santello

    2016-01-01

    Avanços biotecnológicos introduziram recentemente mudanças em muitos setores da indústria a fim de promover o uso de recursos renováveis para produzir moléculas de relevância econômica, tais como o etanol. O uso de biomassa vegetal para a produção de combustíveis renováveis tem atraído muita atenção, mas a viabilidade de tal processo depende do desenvolvimento de organismos geneticamente modificados capazes de consumir eficientemente açúcares de 5 carbonos abundantes nesse material e tolerar ...

  20. Acumulación de acetaldehído y estrés oxidativo en testículo luego de la intoxicación alcohólica en ratas

    OpenAIRE

    2015-01-01

    En el hombre el consumo excesivo de alcohol está asociado con una disminución en la producción de testosterona y la atrofia testicular. Pudieron observarse consecuencias similares en estudios realizados in vitro en testículos aislados y la producción de testosterona, donde el acetaldehído mostró ser más potente que el alcohol para la supresión de la liberación de la hormona. Estudios previos de nuestro laboratorio reportaron que la fracción microsomal del testículo de rata era capaz de metabo...