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Dias Gomes Mendes, Sheila Soraya. "Relatório de Avaliação Mútua: análise comparativa de Cabo Verde e Senegal em relação ao papel do grupo de ação financeira (GAFI) na liderança das medidas de combate ao branqueamento de capitais e do financiamento do terrorismo". Revista Electrónica de Direito 27, nr 1 (2022): 174–93. http://dx.doi.org/10.24840/2182-9845_2022-0001_0005.
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This article aimed to define the Financial Action Task Force (FATF) and its Style Regional Bodies (FSRBs) that combat money laundering and terrorist financing in the specific case of Cape Verde and Senegal with FATF`s recommendations with respect to the regulation and supervision. Therefore, a comparative analysis methodology with a descriptive-analytical approach was developed to compare two member countries of the Intergovernmental Action Group Against Money Laundering in West Africa (GIABA). In data collection, secondary data sources were used: theoretical literature on the subject and FATF report on Mutual Assessment Reports (RAM). This study analyzed variations in compliance with FATF standards between two GIABA member countries: Cape Verde and Senegal. It turned out that although Senegal has almost entirely extended these standards, Cape Verde only partially fulfilled them. These compliance variations are mainly attributed to the varying level of readiness in countries' commitment to legislative and regulatory requirements before the mutual evaluation process. This study makes a unique and vital contribution as it demonstrates the effectiveness of applying the FATF standards for these two GIABA member countries.
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Esoimeme, Ehi Eric. "The Nigerian Money Laundering (Prevention and Prohibition) Bill, 2016: a critical appraisal". Journal of Money Laundering Control 20, nr 1 (3.01.2017): 79–88. http://dx.doi.org/10.1108/jmlc-07-2016-0025.
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Purpose This paper aims to critically examine the Money Laundering (Prevention and Prohibition) Bill, 2016. It also aims to determine the level of effectiveness of the preventive measures in the Bill. Design/methodology/approach The appraisal took the form of a desk study, which analyzed various documents and reports such as the Financial Action Task Force Recommendations 2012, Mutual Evaluation Reports conducted by the Inter-Governmental Action Group against Money Laundering in West Africa (GIABA) on Nigeria, the judgment delivered by Justice Gabriel Kolawole of the Federal High Court Abuja and the United Kingdom’s national risk assessment of money laundering and terrorist financing. Findings This paper determined that the Bill could achieve its core objectives if the following recommendations are implemented: section 15 of the Bill should be modified to include the definition of “Arrangement”; lawyers should be allowed to send their Suspicious Transaction Report to the Nigerian Bar Association, provided that there are appropriate forms of cooperation between the NBA and the Financial Intelligence Unit, and this approach is in line with the Financial Action Task Force Recommendations; the Bill should expressly prohibit retaliation by employers against whistleblowers and provide them with a private cause of action in the event that they are discharged or discriminated against by their employers, and this approach is being adopted by the US Dodd–Frank Act; a request for customer information, by the Director-General of the Nigeria Financial Intelligence Centre, should be made pursuant to an order of the Federal High Court obtained upon an ex-parte application supported by a sworn declaration by an authorized officer of the Centre, justifying the request for customer information. Originality/value This paper offers a critical appraisal of the Money Laundering (Prevention and Prohibition) Bill, 2016. The paper will identify the strengths and weaknesses of the Bill. This is the only paper to adopt this kind of approach.
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Ifeakandu, Ibe Okegbe, i Habila Ardzard. "The Role of Institutional Framework in Entrenching Effective Anti-Money Laundering/Combating Terrorist Financing in West Africa: Inter-Governmental Action Group against Money Laundering in West Africa (GIABA) in Perspective". Beijing Law Review 13, nr 03 (2022): 575–93. http://dx.doi.org/10.4236/blr.2022.133037.
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DELLA CORTE, V., A. ROTUNDI, M. ACCOLLA, R. SORDINI, P. PALUMBO, L. COLANGELI, J. J. LOPEZ–MORENO i in. "GIADA: ITS STATUS AFTER THE ROSETTA CRUISE PHASE AND ON-GROUND ACTIVITY IN SUPPORT OF THE ENCOUNTER WITH COMET 67P/CHURYUMOV-GERASIMENKO". Journal of Astronomical Instrumentation 03, nr 01 (marzec 2014): 1350011. http://dx.doi.org/10.1142/s2251171713500116.
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GIADA (Grain Impact Analyser and Dust Accumulator) on-board the Rosetta mission to comet 67P/Churyumov-Gerasimenko was designed to study the physical and dynamical properties of dust particles ejected by the comet during the encounter. In this paper we report the results of the analysis of data collected by GIADA during the past seven years of the cruise phase. During this period the GIADA detection subsystems were switched on for periodic in-flight payload checkouts to monitor their state-of-health including potential changes in its performance that could affect its data collection. Only slight variations in sensitivity and dynamical range were identified that will not affect the GIADA measurement capability during the Rosetta comet encounter and rendezvous phase. The GIADA microbalance system detected the presence of low-volatility material over a period of about 169 days when the GIADA cover remained partially opened. It is highly probable that this material originated from the spacecraft itself, as a spacecraft's outgassing was observed by the ROSINA mass spectrometer (on-board Rosetta) during the cruise phase. The identification of the low-volatility mass deposited on the microbalances as self-contamination will allow us to evaluate the mass rate background to be subtracted from the GIADA science data. These results obtained from GIADA cruise data analysis coupled with laboratory calibration data obtained from measurements using the GIADA spare model for selected cometary dust analogs will be the basis for the interpretation of the GIADA scientific data.
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Haustein, A. T., R. H. Gilman, P. W. Skillicorn, V. Guevara, F. Díaz, V. Vergara, A. Gastañaduy i J. B. Gilman. "Compensatory growth in broiler chicks fed on Lemna gibba". British Journal of Nutrition 68, nr 2 (wrzesień 1992): 329–35. http://dx.doi.org/10.1079/bjn19920092.
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The growth of broiler chickens on diets containing various levels of Lemna gibba was evaluated. Groups of broiler chicks were fed on diets containing 0-400 g Lemna gibba/kg for 3 weeks. These chickens were then changed to standard diets for a further 2 weeks. As the level of Lemna gibba increased, feed consumption and weight gain decreased. However, when diets were changed to the standard diet, compensatory growth was observed. In a second experiment, diets were formulated with a metabolizable energy of 5.02 MJ (1200 kcal)/kg Lemna gibba and included a finer-milled Lemna gibba. Chickens were fed on diets containing 0-300 g Lemna gibba/kg for 4 weeks. Each group was then divided into two subgroups. For the next 2 weeks one of these sub-groups was maintained on the experimental (Lemna gibba) diets (LL), while the other sub-group was changed to a standard diet (LS). Bird fed at levels above 150 g Lemna gibba/kg had decreased consumption and weight gain. These birds when changed to a standard diet tended to have increased weight gain compared with chickens continuously fed standard rations. LS birds had significantly higher weight gains and feed consumption and lower feed conversion than LL birds. In contrast to older birds, chicks fed on Lemna gibba at high concentrations showed growth retardation. When changed back to a standard diet they demonstrated normal or compensatory growth.
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Sasmaz Kislioglu, Merve. "Removal of Ag, Au, and As from Acid Mine Water Using Lemna gibba and Lemna minor—A Performance Analysis". Water 15, nr 7 (25.03.2023): 1293. http://dx.doi.org/10.3390/w15071293.
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Mining activities result in the accumulation of pollutants in aquatic environments. This study aimed to investigate the accumulation performances of Ag, Au, and As using Lemna minor and Lemna gibba in the acid mine waters of Maden copper deposit. L. minor and L. gibba are aquatic plants belonging to the duckweed family. They are small, fragile, and free-floating aquatic plants. L. minor and L. gibba were separately placed into two reactors. The plants and water from the reactors were collected daily for eight days. Additionally, the electric conductivity, temperature, and pH of the acid mine water were measured daily. L. minor and L. gibba samples were washed, dried, and burned at 300 °C in a drying oven for 24 h. The water and plant samples were analyzed for Ag, Au, and As content using ICP-MS (Inductively Coupled Plasma Mass Spectroscopy). The acid mine waters of Maden copper deposit contained 9.25 ± 0.4, 0.92 ± 0.02, and 193 ± 12 μg L−1, Ag, Au, and As, respectively. In comparison to control samples, L. gibba and L. minor showed high and effective performances in removing Ag, Au and As from the acid mine waters of Maden copper deposit; 240 and 174 times for Ag; 336 and 394 times for Au; and 30 and 907 times for As, respectively. Overall, the results suggest that L. gibba and L. minor can effectively remove Ag, Au, and As from acid mine waters, highlighting their potential use in environmental remediation.
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Okeugo, Oluchi Chris, Obioha i Jane Onyinye. "African Prose Fiction and the Depiction of Corruption in Islamic Society and Religion: A Critical Study of Abubakar Gimba’s Witnesses to Tears and Sacred Apples". International Journal of Applied Linguistics and English Literature 9, nr 1 (31.01.2020): 61. http://dx.doi.org/10.7575/aiac.ijalel.v.9n.1p.61.
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African prose fictions have written on a whole number of ideas and perception, but have conspicuously paid little or no attention to what is predominant in the Islamic society and religious world. For Gimba, the intrigues and contestation over power, especially within the civil service, assume a metaphoric significance in unraveling social contradictions in society. Gimba thus, evaluates the various dimensions of power and how it is used to subjugate or oppress people. In most of his works, Gimba pillories the repressive nature of power and the conflicts it engenders are graphically illustrated. In his articulation of this disabling environment, Gimba evokes a consciousness, concerned with Manichaeism and alienation. Gimba is sensitive to his characters as they adjust to the uncertainties of a postcolonial society with all the indices of underdevelopment, greed, corruption, bureaucratic tardiness, indiscipline, political instability etc. These characteristics of modern Nigeria form the background from which Gimba’s characters are drawn. However, drawing from their Islamic background, the characters in Gimba’s works express their morality, conviction and thought through the ideals of the religion. This leads to a remarkable blending of social and moral concerns with the supervening influence of Islam without sermonization. The outcome of this fusion is a balance between aesthetics and spiritual interests in a way that captures the essence of Northern Nigeria with vividness and freshness. Gimba, like Tahir, therefore relates the traditional and cultural values of the people to their response to the dilemma of new experiences and their interpretations of them. Gimba draws his sources from The Holy Qur’an in the delineation of setting, action and character. As a liberal feminist, he chooses urban heroines through whom he restructures our visions. This article attempts to investigate Gimba’s works using Neo-humanistic theory in evaluating his inclusion of religion and the techniques used conspicuously in the novels, Witnesses to Tears and Sacred Apples. This scholarly work equally argues that the writer’s creativity in religion can best be appreciated through an analytical study of the novel.
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Karthik, M., i R. Nagendran. "Nutrient Reduction and Productivity Studies in Low Strength Freshwater Aquaculture Wastewater Using Lemna Gibba (Duckweed) System". Environment Conservation Journal 3, nr 1 (19.03.2002): 1–8. http://dx.doi.org/10.36953/ecj.2002.030101.
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The use of macrophytes plants for treatment of wastewater for nutrient removable is addressed A stuoy was conducted to ascertain the nutrient reduction potential in freshwater aquaculture using Lemna gibba (Duckweed) Experiments were conducted with plastic trays of dimensions 34 27 y 6 cm Wastewater from freshwater aquaculture was collected and experimented under different dilutions. Nutrient removal and productivity of the Lemna gibba system were studied for a period of ten days. the experiments were conducted over a period of SO days The nutrient removal patterns were obtained for ammonia-nitrogen, nitrite, nitrate and phosphate Reductions in nutrient in the Lemna gibba system are higher in raw wastewater compared to dilutions. Ammonia nitrogen had maximum removal efficiency followed by nitrate, nitrite and phosphate. Biomass productivity was also higher in the raw wastewater series than with dilutions. The studies indicated the survival of Lemna gibba in low nutrient loading conditions and also as a potential biomass resource
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Cao, Zhishan, Ding Yang i Weihai Li. "The first records of Capniella (Plecoptera: Capniidae) from northeast China". Ecologica Montenegrina 48 (1.12.2021): 49–61. http://dx.doi.org/10.37828/em.2021.48.9.
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The genus Capniella Klapálek, 1920 is recorded from China for the first time: C. gibba Hwang, Li & Murányi, 2021 was collected from Liaoning Province, and C. nodosa Klapálek, 1920 from Heilongjiang Province. Both species are redescribed from both sexes, including the unknown female of the recently described C. gibba.
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Dattilo, M. "The Ponies of the Giara highland". Animal Genetic Resources Information 24 (kwiecień 1998): 31–39. http://dx.doi.org/10.1017/s1014233900001115.
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SummaryThe Giara pony is a less known, equine breed of small stature, typical of the island of Sardinia. It draws its denomination from the highland of the Giara, where it lives in the wild.The ponies appeared in Sardinia approximately in the VII century B. C. Recent research, carried out on haemoglobin polymorphism, underlined some analogies with the Arabic horses of North-Africa.These ponies, have a dolyichomorphic-type constitution with long, naked and resistant legs. In the past they were used for agricultural work, however later, with the increase of mechanisation, they returned to the Giara highland where they became feral.The Giara ponies, in the light of recent scientific research, possess not only an inestimable genetic patrimony but they also represent a large source of interest for the equestrian sport, and, above all, for children's riding therapy.The author underlines, finally, that the principal material of this article has been outlined in a symposium held at the University of Sassari 18/11/1997, entitled: “Phenomenology of the environment: psycho-social and zoo-anthropological perspectives”.
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Huang, T. C. "Surface and Ultra-Thin Film Characterization by Grazing-Incidence Asymmetric Bragg Diffraction". Advances in X-ray Analysis 33 (1989): 91–100. http://dx.doi.org/10.1154/s0376030800019479.
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AbstractAn effective technique using grazing-incidence X-rays and asymmetric-Bragg diffraction (GIABD) for the characterization of crystalline phases on surfaces and structural depth-profiles in thin films is described. The application of the GIABD using both X-ray and synchrotron radiation sources for the analysis of an iron-oxide magnetic thin film previously reported to have an unexpected magnetically-dead layer is discussed. The X-ray diffraction analysis using the GIABD and the conventional θ-2θ scanning techniques detected an anti-ferromagnetic hexagonal α-Fe2O3 on the surface and a ferromagnetic tetragonal γ-Fe2O3 in the bulk of the film, respectively. The synchrotron diffraction analysis using incident angles below and above the critical angle of total reflection quantitatively determined the structural depth-profiles of α-Fe2O3 and γ-Fe2O3 in the film.
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Stefan, Yonatan Alvin, i Robiyanto Robiyanto. "The Influence of Exchange Rate, World Oil Price, and BI Rate on Airline Companie’s Return in Indonesian Stock Market". International Journal of Social Science and Business 3, nr 3 (20.09.2019): 321. http://dx.doi.org/10.23887/ijssb.v3i3.21059.
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In an effort to support the economic growth of Indonesia, an infrastructure development is carried out to achieve the national development. It brings positive influences on transportation companies in Indonesia. Many companies list their shares to Indonesia Stock Exchange, including PT. Garuda Indonesia (Persero) Tbk (IDX code: GIAA) and PT. AirAsia Indonesia Tbk (IDX code: CMPP), aiming to have additional capital sources. The two companies can be such a reference for investors to make investments, but they still need to consider the macro factors attached. This study examines the influende of exchange rate, world oil price, and Bank Indonesia (BI) rates on the GIAA and CMPP stock returns. The analysis technique used was Generalize Autoregressive Conditional Heteroscedasticity (GARCH) and daily data starting from their IPO to February 28th, 2019. The results showed that the exchange rate negatively affected the GIAA and CMPP stock returns, while the world oil prices only negatively affected the CMPP stock return, and the BI rates only negatively affected the GIAA stock return. In general, the investors are suggested not to buy the GIAA and CMPP shares when the IDR exchange rate weakens against the US dollar exchange rate.
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Foschino Barbaro, Maria Grazia, i Michele Pellegrini. "Rilevare e curare la violenza all’infanzia: l’esperienza pugliese di GIADA". QUADERNI ACP 28, nr 5 (2021): 263. http://dx.doi.org/10.53141/qacp.2021.263-265.
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This article illustrates the path built over a decade by the Interdisciplinary Assistance Group for Abused Women and Children (GIADA) which has gradually taken on a stable dimension at the “Giovanni XXIII” Pediatric Hospital in Bari. The article describes the functions performed and the architecture of the Apulian model in which GIADA acts as a Level III Center for the prevention, diagnosis and treatment of the different forms of violence against children.
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Guimaraes, F. P., R. Aguiar, J. A. Oliveira, J. A. A. Silva i D. Karam. "Potential of macrophyte for removing arsenic from aqueous solution". Planta Daninha 30, nr 4 (grudzień 2012): 683–96. http://dx.doi.org/10.1590/s0100-83582012000400001.
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The potential of three aquatic macrophytes, Azoll caroliniana, Salvinia minima and Lemna gibba, was evaluated in this work aimed at selection of plants to be used in remediation of environments contaminated by arsenic (As). The experiments were carried out in a greenhouse during six days in pots containing Hoagland solution (¼ ionic strength) at As concentrations of 0.5; 2.5 and 5.0 mg L-1. The three species showed greater As accumulation as the concentration of the metalloid in solution increased. However, a reduction was detected in fresh and dry mass gain when the plants were exposed to high As concentrations. The macrophytes showed differences in efficiency of removal of As in solution. A. caroliniana, S. minima and L. gibba accumulated, on average, 0.130; 0.200; and 1.397 mg mDM-1, respectively, when exposed to 5.0 mg L-1 of As. The macrophytes absorbed a greater quantity of As in solution with low phosphate content. The greater As concentration in L. gibba tissues lowered the chlorophyll and carotenoid contents as shown by the high chlorosis incidence. Lemna gibba also exhibited a decrease in leaf size, with the total chlorophyll and carotenoid synthesis not being affected by As in A. caroliniana. This species exhibited purplish leaves with high concentration of anthocyanin, whose presence suggested association to phosphate deficiency. Marginal necrosis occurred on S. minima floating leaves, with the released daughter-plants not showing any visual symptoms during the treatment. The percentage of As removed from the solution decreased when the plants were exposed to high concentrations of the pollutant. Among the three species studied, only L. gibba could be considered an As hyper-accumulator. The use of this plant species for remediation of aquatic environments was shown to be limited and requires further investigation.
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Varga, Martina, Janja Horvatić i Ante Čelić. "Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium". Open Life Sciences 8, nr 11 (1.11.2013): 1083–93. http://dx.doi.org/10.2478/s11535-013-0238-1.
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AbstractThe effects of mercury (Hg), cadmium (Cd) and chromium (Cr) in concentrations ranging from 0.02 to 20 mg L−1 applied for 24 h were assessed in Lemna minor and Lemna gibba by measuring changes in protein concentration, ascorbic acid, phenolics, malondialdehyde (MDA), hydrogen peroxide (H2O2), the activity of guaiacol peroxidase (G-POX) and catalase (CAT). Ascorbic acid, phenolics, catalase and guaiacol peroxidase played a key role in the antioxidative response of L. gibba. Inadequate activity of antioxidant enzymes in the L. minor resulted in MDA and H2O2 accumulation. In both used species, Hg treatment decreased protein content and increased CAT and G-POX activity, but decreased MDA and H2O2 levels. Cadmium and chromium had opposite impacts on two used Lemna species on almost all observed parameters. Enhanced antioxidative responses of L. gibba to lower concentrations of Hg, Cd and Cr indicated greater abiotic stress tolerance than L. minor.
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Guo, Yunbo, Jorge Bernal i Bogdan J. Matuszewski. "Polyp Segmentation with Fully Convolutional Deep Neural Networks—Extended Evaluation Study". Journal of Imaging 6, nr 7 (13.07.2020): 69. http://dx.doi.org/10.3390/jimaging6070069.
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Analysis of colonoscopy images plays a significant role in early detection of colorectal cancer. Automated tissue segmentation can be useful for two of the most relevant clinical target applications—lesion detection and classification, thereby providing important means to make both processes more accurate and robust. To automate video colonoscopy analysis, computer vision and machine learning methods have been utilized and shown to enhance polyp detectability and segmentation objectivity. This paper describes a polyp segmentation algorithm, developed based on fully convolutional network models, that was originally developed for the Endoscopic Vision Gastrointestinal Image Analysis (GIANA) polyp segmentation challenges. The key contribution of the paper is an extended evaluation of the proposed architecture, by comparing it against established image segmentation benchmarks utilizing several metrics with cross-validation on the GIANA training dataset. Different experiments are described, including examination of various network configurations, values of design parameters, data augmentation approaches, and polyp characteristics. The reported results demonstrate the significance of the data augmentation, and careful selection of the method’s design parameters. The proposed method delivers state-of-the-art results with near real-time performance. The described solution was instrumental in securing the top spot for the polyp segmentation sub-challenge at the 2017 GIANA challenge and second place for the standard image resolution segmentation task at the 2018 GIANA challenge.
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Khellaf, N., i M. Zerdaoui. "Development of a kinetic model for the removal of zinc using the aquatic macrophyte, Lemna gibba L." Water Science and Technology 66, nr 5 (1.09.2012): 953–57. http://dx.doi.org/10.2166/wst.2012.262.
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This work was conducted to develop a suitable kinetic model for the removal of zinc (Zn) using the duckweed Lemna gibba L. as a phytoremediation agent at laboratory scale. The 7-day treatments of 6.0–18.0 mg Zn/L were performed under controlled conditions: 12 h photoperiod, temperature of 21±1 °C, pH of 6.0±0.1 and a quarter Coïc and Lesaint solution as a culture medium. The results revealed a Zn removal efficiency of 60–70% and an accumulation capacity of plants ranging from 4.23 to 25.88 mg/g DM. Two simplified kinetic models namely pseudo-first-order and pseudo-second-order were used to study the mechanism that controls the biological process. The kinetic study proved that the removal rate of Zn by L. gibba was proportional to the Zn concentration present in water. Therefore, the pseudo-first-order model was considered to be more suitable to describe the disappearance of Zn from water in the presence of fronds of L. gibba L. These results may serve as a basis in mathematical modelling for large-scale application.
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Marks, Jane Claire, i Rex L. Lowe. "Interactive Effects of Nutrient Availability and Light Levels on the Periphyton Composition of a Large Oligotrophic Lake". Canadian Journal of Fisheries and Aquatic Sciences 50, nr 6 (1.06.1993): 1270–78. http://dx.doi.org/10.1139/f93-144.
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We investigated the effects of nitrogen, phosphorus, and light on periphyton in a clear oligotrophic lake. Experimental treatments consisted of three levels each of nitrogen, phosphorus, and light in a three-way factorial design. Nitrogen and phosphorus concentrations were manipulated using nutrient-diffusing clay substrates; light levels were manipulated with shade cloth. Periphyton biovolume and cell densities increased significantly with both nitrogen and phosphorus enrichment but were not affected by shading. Phosphorus enrichment increased periphyton accumulation only when nitrogen levels were high, indicating a significant interactive effect between nitrogen and phosphorus. Differences in species composition among treatments were mostly due to changes in the diatoms Nitzschia palea and Rhopalodia gibba. Ambient and phosphorus-enriched substrates were dominated by R. gibba, which contains a nitrogen-fixing endosymbiont, and blue-green algae. Nitrogen enrichment and nitrogen and phosphorus in combination resulted in an assemblage dominated by N. palea. Unshaded and highly shaded substrates were dominated by N. palea and Achnanthes minutissima, but the medium-shade substrates were dominated by R. gibba.
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CAO, LIANG, ROMAIN CAUSSE i E. ZHANG. "Revision of the loach species Barbatula nuda (Bleeker 1865) (Pisces: Balitoridae) from North China, with a description of a new species from Inner Mongolia". Zootaxa 3586, nr 1 (14.12.2012): 236. http://dx.doi.org/10.11646/zootaxa.3586.1.22.
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Variation in the currently recognized species, Barbatula nuda (Bleeker 1865), from North China was studied, and threedistinct species are identified: B. nuda, B. toni, and B. gibba sp. nov.. The name B. nuda is presently misapplied; this speciesis distinct from B. toni, a species widely distributed in Northeast China, and occurs only in the Liao-He basin of LiaoningProvince and the Tumen-Jiang basin of Jilin Province. The new species, B. gibba, is only found in Dali-Nur Lake in Inner Mongolia. Among Chinese Barbatula species, it is uniquely distinguished by the shape of the predorsal body.
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Velichkova, Katya. "Bioconcentration efficiency of Lemna minor L. and Lemna gibba L. for trace metals in three southeastern Bulgarian water reservoirs". Anales de Biología, nr 41 (1.02.2019): 5–10. http://dx.doi.org/10.6018/analesbio.41.02.
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La lenteja de agua se utiliza en el tratamiento de aguas residuales para eliminar sustancias nocivas, minerales y contaminación orgánica. El propósito del presente estudio fue investigar la eficiencia de bioconcentración de metales pesados en Lemna minor y Lemna gibba provenientes de tres embalses del sureste de Bulgaria: el canal de la ciudad de Elhovo, el canal del lago Vaja y el canal del lago Mandra. Se analizaron los contenidos de proteína cruda, lípidos y ceniza en las especies estudiadas de Lemna. Los metales pesados en agua y plantas acuáticas se determinaron con un espectrómetro de absorción atómica (AAS) "A Analyst 800" - Perkin Elmer. Las concentraciones de metales en L. minor y L. gibba mostraron una tendencia descendente: Mn>Fe>Zn>Cu>Ni> Cr>Pb>Cd en las tres masas de agua. Duckweed is used in wastewater treatment to remove inorganic substances, mineral and organic contamination. The purpose of present study was to investigate a Lemna minor and Lemna gibba bioconcentration efficiency of trace metals in three southeast Bulgarian water reservoirs. Three waterbodies located on the territory of South East Bulgaria: water canal town Elhovo, water canal Vaja Lake and water canal Mandra Lake was studied. Crude protein, lipid, ash content in studied species of Lemna were analyzed. The trace metal content in water and aquatic plants was determined on an atomic absorption spectrometer (AAS) "A Analyst 800" - Perkin Elmer. The concentrations of metals in both L. minor and L. gibba and for all sites showed a downward trend: Mn>Fe> Zn>Cu>Ni>Cr>Pb>Cd.
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Luis Eduardo Gutiérrez-Andres, Jorge Adrián Paz-Delgado i Angélica Rodríguez-Dorantes. "Enzymatic response of Lemna gibba plants inoculated with endophyte bacteria". Open Access Research Journal of Science and Technology 4, nr 1 (30.08.2022): 056–61. http://dx.doi.org/10.53022/oarjls.2022.4.1.0061.
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Duckweeds a kind of aquatic plants classified as macrophytes, have been considered as nutrient pumps. Studies of endophyte associates focused to their functional analysis contributing to the knowledge of plant microbe interactions. This work analyzed the effect on selected phenoloxidases as a response of Lemna gibba plants inoculated with endophyte bacteria associated to their activity of growth promotion. Five isolated endophyte bacteria belonging to Bacillus genera and named: Bacillus sp. strain Fb1, Bacillus sp. strain Fb2, Bacillus sp. strain Fb3, Bacillus sp. strain Fb4 and Bacillus sp. strain Fb5 were employed as inoculants. According to the fresh weight of Lemna gibba fronds, the results obtained showing a suitable promoting activity by the endophyte bacteria tested; even the growth of fronds based on protein content was less, it showed growth promotion between 30 to 60% of the effect compared to control plants. In this work, Lemna gibba plants inoculated with five endophyte bacteria, showed that these Bacillus strains not only acting as biostimulants they also induced the activity of both enzymes tested (guaiacol peroxidases and hemeperoxidases), recommending this plant species to evaluate the toxicity effect of contaminants and xenobiotics.
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Varga, Martina, Tanja Žuna Pfeiffer, Lidija Begović, Selma Mlinarić, Janja Horvatić, Tihana Miloloža i Ivna Štolfa Čamagajevac. "Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment". Plants 12, nr 6 (19.03.2023): 1367. http://dx.doi.org/10.3390/plants12061367.
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Wastewater is a source of many environmental pollutants and potentially high concentrations of essential plant nutrients. Site-specific nutrient levels may influence the response of exposed plants to a chemical stressor. In the present study, we focused on the responses of model aquatic macrophyte swollen duckweed (Lemna gibba L.) to a short pulse exposure and a commercially available colloidal silver product as a potential environmental chemical stressor, combined with two levels of total nitrogen and phosphorus nutrition. Treatment with the commercially available colloidal silver product caused oxidative stress in L. gibba plants under both high and low nutrient levels. Plants grown and treated under high nutrient levels showed lower levels of lipid peroxidation and hydrogen peroxide accumulation, as well as higher levels of photosynthetic pigment content in comparison to treated plants under low nutrient levels. Higher free radical scavenging activity for plants treated with silver in combination with high nutrient levels resulted in better overall protection from silver-induced oxidative stress. The results showed that external nutrient levels significantly affected the L. gibba plant’s response to the colloidal silver presence in the environment and that nutrient levels should be considered in the assessment of potential environmental impact for contaminants.
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Duarte-Silva, Erica, Milene Faria Vieira, Nelson Sabino Bittencourt Jr i Flávia Cristina Pinto Garcia. "Polimorfismo floral em Valeriana scandens L. (Valerianaceae)". Acta Botanica Brasilica 24, nr 3 (wrzesień 2010): 871–76. http://dx.doi.org/10.1590/s0102-33062010000300030.
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Foram encontrados três morfos florais em Valeriana scandens L.: flor perfeita, flor pistilada 1 e flor pistilada 2. A perfeita possui corola maior que a dos demais morfos, com lobos reflexos na antese, giba proeminente e localizada na porção proximal do tubo floral; anteras maiores que as dos demais morfos, com pólen viável; estilete curto e estigma incluso, o menor ovário e saco embrionário estruturalmente normal, semelhante ao dos demais morfos. A pistilada 1 possui a giba menos proeminente, corola de tamanho intermediário em relação aos demais morfos, lobos radiais na antese; anteras pequenas, sem pólen e estilete longo e estigma exserto. A pistilada 2 possui lobos radiais na antese, anteras de comprimento semelhante às da perfeita, mas de menor largura, com pólen inviável; estilete mais curto, tal como o da flor perfeita, e estigma exserto, tal como o da flor pistilada 1. Nos três morfos, o nectário é formado por tricomas secretores unicelulares situados na epiderme da face interna da giba, e suas sementes são viáveis. As flores pistilada 2 e perfeita apresentam um septo que isola a giba do restante do tubo floral, formando uma câmara nectarífera. V. scandens L. é ginomonóica-ginodióica, expressão sexual inédita em Valerianaceae.
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Giontella, Andrea, Irene Cardinali, Camillo Pieramati, Raffaele Cherchi, Giovanni Paolo Biggio, Alessandro Achilli, Maurizio Silvestrelli i Hovirag Lancioni. "A Genetic Window on Sardinian Native Horse Breeds through Uniparental Molecular Systems". Animals 10, nr 9 (1.09.2020): 1544. http://dx.doi.org/10.3390/ani10091544.
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Sardinia, an island located to the west of Italy in the Mediterranean Sea, boasts three native horse breeds: Giara, Sarcidano, and Sardinian Anglo-Arab. Here, we have investigated for the first time three loci of the non-recombining region of the Y chromosome (NRY) in 34 stallions from these breeds and performed a phylogenetic analysis of the maternal relationships among 178 previously published mitochondrial control regions. We found that the current NRY diversity of Sardinian horse breeds is linked to three haplotypes (HT), all identified within Sarcidano. Each breed showed a typical HT: HT1 (ancestral) was the most represented in Sarcidano, HT2 (Neapolitan/Oriental wave) in Giara, and HT3 (Thoroughbred wave) in Sardinian Anglo-Arab. The specificity of each haplotype suggests the influence of independent breeding strategies and the effect of genetic drift in each Sardinian population. The female counterpart, extended to 178 horses, showed a low genetic variability and a common maternal origin for Giara and Sarcidano. The higher variability of the Sardinian Anglo-Arab indicates multiple mare lineages in its current population. Further genetic analyses will be crucial to understand the paternal history of male horses, preserve the endangered mares’ and stallions’ lineages, and improve the enhancement of autochthonous genetic resources on this island.
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Mandi, L. "Marrakesh Wastewater Purification Experiment Using Vascular Aquatic Plants Eichhornia crassipes and Lemna gibba". Water Science and Technology 29, nr 4 (1.02.1994): 283–87. http://dx.doi.org/10.2166/wst.1994.0210.
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This work tests experimentally the capacities of water hyacinth (Eichhornia crassipes) and duckweed (Lemna gibba) to purify wastewater in Marrakesh.1)Eichhornia crassipes was grown in continuous culture with a constant flow rate of 10 l.min.−1 Organic, bacterial and parasitical loads were examined to determine the efficiency of the system. The results show that water hyacinth is well suited to the climatic conditions of Marrakesh. Domestic sewage purification by water hyacinth leads to satisfactory efficiency during the summer with an 87% reduction in chemical oxygen demand (COD) and 95% reduction in total suspended solids (TSS). Bacterial load reduction expressed by control of faecal contamination bacteria achieved 2 log units for a short theoretical retention time (7 days). Moreover, this process reduced parasitic helminth eggs to undetectable levels.2)Lemna gibba was grown in continuous culture with a constant flow rate of 3 1. day−1. Only organic loads were examined. Three categories of influents were tested to determine the system efficiency. The results obtained show that Lemna gibba has the capacity to purify a low organic load (COD:305–530 mg.l−1). The average influent COD was reduced by 82%. During the summer period the average influent COD and TSS has been reduced by 61% and 82% respectively.
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Braglia, Luca, Diego Breviario, Silvia Gianì, Floriana Gavazzi, Jacopo De Gregori i Laura Morello. "New Insights into Interspecific Hybridization in Lemna L. Sect. Lemna (Lemnaceae Martinov)". Plants 10, nr 12 (15.12.2021): 2767. http://dx.doi.org/10.3390/plants10122767.
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Duckweeds have been increasingly studied in recent years, both as model plants and in view of their potential applications as a new crop in a circular bioeconomy perspective. In order to select species and clones with the desired attributes, the correct identification of the species is fundamental. Molecular methods have recently provided a more solid base for taxonomy and yielded a consensus phylogenetic tree, although some points remain to be elucidated. The duckweed genus Lemna L. comprises twelve species, grouped in four sections, which include very similar sister species. The least taxonomically resolved is sect. Lemna, presenting difficulties in species delimitation using morphological and even barcoding molecular markers. Ambiguous species boundaries between Lemna minor L. and Lemna japonica Landolt have been clarified by Tubulin Based Polymorphism (TBP), with the discovery of interspecific hybrids. In the present work, we extended TBP profiling to a larger number of clones in sect. Lemna, previously classified using only morphological features, in order to test that classification, and to investigate the possible existence of other hybrids in this section. The analysis revealed several misidentifications of clones, in particular among the species L. minor, L. japonica and Lemna gibba L., and identified six putative ‘L. gibba’ clones as interspecific hybrids between L. minor and L. gibba.
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RajaRajeswari, Rathinasamy, Sivanandam Sathiyanarayanan, Atmakuru Ramesh i Sornam Ayyappan. "Evaluation of Bioavailability of Residues of Pretilachlor in soil and Water under Paddy Cropping Condition and their In!uence on Lemna gibba". Journal of Agriculture and Environment 14 (1.12.2013): 102–10. http://dx.doi.org/10.3126/aej.v14i0.19790.
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Pretilachlor is a chloroacetanilide herbicide commonly used to control grasses, broadleaved weeds and floating aquatic species in transplanted and direct seeded rice. Herbicide residues lead to potential risk for aquatic plants and are extremely toxic to the aquatic ecosystem. Pretilachlor a chloroacetanilide herbicide, used in control of grasses, broadleaved weeds and floating aquatic species in transplanted and direct seeded rice. Herbicide residues lead to potential risk for aquatic plants and are extremely toxic to the aquatic ecosystem. The bioavailability and the toxicity of Pretilachlor residues on Lemna gibba was studied after applying the herbicide formulation at the recommended dose 1.25 g.a.i/ha under actual cropping conditions. The concentration of pretilachlor in paddy water and soil was analyzed by HPLC-UV method and its degradation products were confirmed by electrospray tandem mass spectrometry (LC-ESI -MS/MS) method. The recovery percentage at the limit of quantification (LOQ) 0.03 ppm was 92-102%. Residues in water dissipated rapidly with DT50 value 1.6 days and went to below detectable level by 15thday. The percentage inhibition of yield based on frond numbers was 97% at this time point, indicating toxicity index (TI) >1.0 to Lemna gibba. The observation recorded on 90th day showed no sign of inhibition of yield of Lemna gibba.
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Chiba, Takashi, Yoshifumi Horie i Akihiro Tuji. "Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances". PhytoKeys 229 (18.07.2023): 139–55. http://dx.doi.org/10.3897/phytokeys.229.104449.
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The ecologies (salinity tolerance) of many diatoms are largely unknown, despite their potential to contribute to more detailed paleoenvironmental reconstructions. This study therefore aimed to investigate the relationship between diatom species and salinity. We cultured seven cosmopolitan benthic diatom species obtained from Lake Akan, a freshwater inland lake in Japan: Epithemia adnata, E. frickei, E. gibba, E. operculata, E. sorex, E. sp. and E. turgida. Each species was cultured at eleven salinities between 0‰ and 50‰. Epithemia adnata, E. frickei and E. sorex had the highest growth rate at a salinity of 3‰, with no further increase observed above 25‰. However, E. gibba had the highest growth rate at a salinity of 5‰, with no increase at salinities ≥ 30‰. These results suggest that E. adnata, E. frickei, E. gibba, and E. sorex grow in freshwater to brackish-water environments. Epithemia operculata and E. sp. proliferated at all salinities, indicating that they can adapt to hypersaline environments. However, E. turgida did not survive in salinities >10‰, making it the species with the narrowest salinity tolerance range. These results provide new knowledge that improves the understanding of the ecology of these species in modern environments and offer insights into paleoenvironmental reconstructions through diatom analysis.
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Romo Valdez, Ana Mireya, Jesús José Portillo Loera, Jesús David Urías Estrada, Alfredo Estrada Angulo, Beatriz Isabel Castro Pérez i Francisco Gerardo Ríos Rincón. "Frecuencia y puntaje de jadeo en bovinos productores de carne en finalización intensiva durante el verano". Revista Mexicana de Ciencias Pecuarias 13, nr 2 (16.05.2022): 559–72. http://dx.doi.org/10.22319/rmcp.v13i2.5977.
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Para determinar la frecuencia y el puntaje de jadeo en bovinos productores de carne en finalización intensiva durante la séptima a la doceava semana del verano, se llevó a cabo un estudio observacional descriptivo con duración de seis semanas. Se eligieron 12 corrales de tres diferentes dimensiones. A las 0800, 1200 y 1600 horas se registraron la frecuencia y puntaje de jadeo, temperatura ambiental y humedad relativa; además, se calculó el índice de temperatura y humedad (ITH). La frecuencia se registró como el número de bovinos que manifestaron esta expresión en cada corral. Para registrar el puntaje de jadeo se utilizó una escala de cinco puntos. Los bovinos se asignaron a tres categorias: sin giba, con giba media y giba grande en correspondencia con la predominancia fenotipica de Bos taurus o Bos indicus. La mayor frecuencia de jadeos se observó a las 1200 y 1600 h (P<0.01), cuando el valor de ITH superó las 84 unidades. Se observó efecto (P<0.01) del diseño del corral, hora del día y tamaño de la giba sobre el puntaje de jadeo. En la manifestación de la frecuencia y puntaje de jadeo en bovinos productores de carne en corral de engorda intensiva, influyó la hora del día, el diseño del corral y la mayor predominancia fenotípica de Bos taurus.
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Rachmawati, Desiana. "KINERJA PROFITABILITAS SEKTOR PENERBANGAN PADA MASA PANDEMI DAN DAMPAKNYA TERHADAP NILAI PERUSAHAAN (Studi pada Garuda Indonesia dan AirAsia)". Jurnal Manajemen Dirgantara 15, nr 1 (15.07.2022): 184–92. http://dx.doi.org/10.56521/manajemen-dirgantara.v15i1.628.
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Pada awal tahun 2020, muncul penyebaran virus corona atau Covid-19 yang disebabkan oleh virus SARS-CoV-2 dan ditetapkan sebagai pandemi oleh WHO pada 9 Maret 2020. Pandemi Covid-19 telah membawa dampak yang cukup signifikan terhadap industri penerbangan baik dalam skala nasional maupun internasional. Perubahan pendapatan akan berdampak pada kondisi keuangan perusahaan, terutama profitabilitas laporan keuangan. Penelitian ini bertujuan untuk menganalisis perubahan kinerja profitabilitas perusahaan sektor penerbangan sebagai dampak pandemi Covid-19. Metode yang digunakan adalah kuantitatif deskriptif dengan menghitung rasio profitabilitas dan nilai perusahaan PT Garuda Indonesia Tbk dan PT AirAsia Indonesia Tbk periode 2017 sampai 2020. Rasio profitabilitas yang digunakan adalah NPM, ROA dan ROE, sedangkan indikator nilai perusahaan adalah PER dan PBV. Data yang digunakan berupa laporan keuangan dan laporan tahunan PT Garuda Indonesia Tbk (GIAA) dan PT AirAsia Indonesia Tbk (CMPP) periode 2017 sampai 2020. Hasil penelitian menunjukkan bahwa rasio profitabilitas CMPP dan GIAA yang dinilai dengan ROA dan NPM mengalami penurunan yang sangat drastis dengan nilai negatif. Nilai rasio negatif diperoleh karena laba bersih (EAT) bernilai negatif, dengan kata lain perusahaan mengalami kerugian. Sedangkan ROE bernilai positif yang disebabkan oleh nilai ekuitas dan EAT sama-sama negatif. Ekuitas CMPP dan GIAA bernilai positif di tahun 2020 sebagai dampak dari kerugian yang terlalu besar. Nilai ekuitas negatif ini pun berdampak pada turunnya nilai perusahaan yang dibuktikan dengan nilai PER dan PBV CMPP maupun GIAA bernilai negatif di tahun 2020.
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Guimarães, F. P., R. Aguiar, D. Karam, J. A. Oliveira, J. A. A. Silva, C. L. Santos, B. F. Sant'anna-Santos i C. Lizieri-Santos. "Potential of macrophytes for removing atrazine from aqueous solution". Planta Daninha 29, spe (2011): 1137–47. http://dx.doi.org/10.1590/s0100-83582011000500022.
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The potential of three macrophytes, Azolla caroliniana, Salvinia minima, and Lemna gibba was assessed in this study to select plants for use in environmental remediation contaminated with atrazine. Experiments were carried out in a greenhouse over six days in pots containing Hoagland 0.25 strength nutritive solution at the following atrazine concentrations: 0; 0.01; 0.1; 1.0; 10.0 mg L-1. Decrease in biomass accumulation was observed in the three macrophytes, as well as toxic effects evidenced by the symptomatology developed by the plants which caused their deaths. The chlorosis and necrosis allowed to observe in the plants the high sensitivity of the three species to the herbicide. Plants presented low potential for removal of atrazine in solution when exposed to low concentrations of the herbicide. However, at the 10.0 mg L-1 atrazine concentration, L. gibba and A. caroliniana showed potential to remove the herbicide from the solution (0.016 and 0.018 mg atrazine per fresh mass gram, respectively). This fact likely resulted from the processes of atrazine adsorption by the dead material. The percentage of atrazine removed from the solution by the plants decreased when the plants were exposed to high concentrations of the pollutant. Azolla caroliniana, S. minima, and L. gibba were not effective in removing the herbicide from solution. The use of these species to remedy aquatic environments was shown to be limited.
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Duman, Fatih, Ahmet Aksoy, Fatma Ozturk i Ahmet Ceylan Erciyes. "Exogenous Salicylate Application Affects the Lead and Copper Accumulation Characteristics of Lemna gibba L." Zeitschrift für Naturforschung C 65, nr 11-12 (1.12.2010): 675–80. http://dx.doi.org/10.1515/znc-2010-11-1207.
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Previous studies have shown that salicylates can change the ion permeability of root cells. Therefore the possible effects of exogenous salicylate application on lead (Pb) and copper (Cu) accumulation and its protective role against DNA damage due to metal exposure in Lemna gibba were studied. L. gibba was exposed to 5, 10, and 25 μM Pb and Cu for six days in the presence and absence of sodium salicylate (SA) (0.1, 0.5, and 1 mM). At all concentrations tested, SA application decreased Pb accumulation. On the other hand, application of 0.5 mM SA increased Cu accumulation. SA did not reduce DNA damage resulting from Pb and Cu toxicity. In summary, SA may be useful for reducing Pb accumulation, and application of SA at 0.5 mM may be useful for the phytoextraction of Cu
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Widiarma, In'am, i Nenny Syahrenny. "Kajian Dugaan Praktik Kartel PT Garuda Indonesia, Tbk Mempengaruhi Pergerakan Harga Saham di BEI". Jurnal Ilmu Manajemen 9, nr 4 (31.12.2021): 1592–600. http://dx.doi.org/10.26740/jim.v9n4.p1592-1600.
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ABSTRACT The purpose of this study was to determine the effect of the alleged cartel practices carried out by the airline PT Garuda Indonesia, Tbk, namely by the increasingly high price of airline tickets and how their impact on the stock price movement itself. This practice is not permitted in Indonesia and almost all countries in the world, but this becomes very dilemmatic in the current aviation business if the ticket price is not raised the company will bear substantial losses but on the other hand consumers are very disadvantaged and can sacrifice the country's economy if countries that depend heavily on air transportation such as Indonesia. Considering that PT Garuda Indonesia, Tbk is a state-owned company of the Republic of Indonesia which has been listed on the Indonesia Stock Exchange under the GIAA stock code, whether news of alleged cartel practices by GIAA could affect the public investors in the capital market in making a decision to make a selling or buying transaction on GIAA shares.Keywords: cartel practices, garuda indonesia, capital markets
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Al-Dakhil, Mohammed, Salem Alghamdi, Hussein Migdadi, Muhammad Afzal i Ahmed Abdelrahim Ali. "Morphological Characterization and DNA Barcoding of Duckweed Species in Saudi Arabia". Plants 10, nr 11 (12.11.2021): 2438. http://dx.doi.org/10.3390/plants10112438.
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Duckweeds, or Lemnaceae, are widespread aquatic plants. Morphology-based identification of duckweed species is difficult because of their structural complexity. Hence, molecular tools provide significant advantages for characterizing and selecting species or clones for sustainable commercial use. In this study, we collected and characterized ten duckweed isolates from nine different regions in Saudi Arabia (SA). Based on the morphological characterization and phylogenetic analysis of intergenic spacer sequences of chloroplast DNA using six barcoding markers, the clones were classified into three genera, represented by seven species: Lemna gibba L., Lemna minor L., Lemna japonica Landolt, Lemna aequinoctialis Welw., Lemna perpusilla Torr., Spirodela polyryiza (L.) Schleid., and Landoltia punctate G. Mey. Lemna gibba was revealed to be a distinct dominant duckweed species in many regions of SA. Five barcoding markers showed that L. gibba, L. minor, and L. punctata were the most widely distributed species in the country. However, L. punctata, L. perpusilla, and S. polyryiza were the dominant species in the Al-Qassim, Madinah-1, and Madinah-2 regions, respectively. Moreover, the morphological traits revealed variations for these clones, relative to other studied duckweed clones. According to the results obtained in this study, three out of six plastid markers (trnH-psbA, matK, and atpF-atpH) helped to identify the dominant duckweed species in Saudi Arabia. Further evaluation based on adaptability, molecular genetic studies, and functional genomics is needed for these species to be used at the commercial level in Saudi Arabia.
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Flaishman, M. A., E. Hadar i E. Hallak-Herr. "First Report of Pythium myriotylum on Lemna gibba in Israel". Plant Disease 81, nr 5 (maj 1997): 550. http://dx.doi.org/10.1094/pdis.1997.81.5.550c.
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Much interest has focused on duckweed as an alternative food source. Commercial production of Lemna gibba was initiated in Israel in 1991. During the summers of 1994 and 1995, Lemna gibba was grown commercially in covered ponds. In these two seasons, the plants were found to be infected by Pythium myriotylum, which has previously been reported as a pathogen of duckweed (1). In the ponds where the plants were held at high density, small, wilted, white patches of plants were recognized in early June. By the end of the month over 70% of the plants were infected and died. Microscopic examination of infected plants showed the presence of fungal appressoria and mycelial growth. Fungi were isolated from the plants onto potato dextrose agar (PDA). Ten isolates grown on PDA for 7 days were used to inoculate healthy plants. After 12 days, symptoms developed on plants at 28 or 32°C. Symptoms were similar to those observed on pond-grown plants. Plants maintained at 17 or 22°C did not become infected. The results from the pond and laboratory work showed that high plant density and temperature above 24°C were necessary for infection, and infection takes place by hyphal elements that spread in the water. This is the first report of Pythium myriotylum on Lemna gibba in Israel. Reference: (1) E. Rejmankova et al. Veröff. Geobot. Inst. Eidg. Tech. Hochsch. Stift. Rübel, Zür. 87:178, 1986.
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Mollá, B., A. Martín i V. Villanueva. "El hombre que giraba la cabeza". Medicine - Programa de Formación Médica Continuada Acreditado 11, nr 73 (marzec 2015): 4414.e1–4414.e5. http://dx.doi.org/10.1016/j.med.2015.02.009.
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Espinosa Reyes, Jorge Alberto, Juan Fernando Muñoz Tamayo i Néstor Ricardo González Marín. "Injertos en rinoplastia primaria tallados del dorso cartilaginoso". ACTA DE OTORRINOLARINGOLOGÍA & CIRUGÍA DE CABEZA Y CUELLO 43, nr 4 (16.01.2017): 277–80. http://dx.doi.org/10.37076/acorl.v43i4.34.
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Introducción: El uso de injertos autólogos de cartílago en rinoplastia primaria seencuentra reportado ampliamente en la literatura, al igual que los diferentes sitios donantes de donde se pueden obtener. En el presente artículo se propone el uso del dorso cartilaginoso como sitio donante para tallar injertos de cartílago, siendo esta, una opción diferente y eficaz para la corrección de diversas deformidades nasales. Objetivo: Reportar la experiencia con el uso de cartilago del dorso cartilaginoso como fuente de material autólogo suficiente y adecuado para injertos en rinoplastia primaria. Diseño: Reporte de caso. Materiales y métodos: Descripción detallada de caso clínico, planeamiento y técnica quirúrgica del autor principal. Resultados: Paciente de 23 años de edad, género femenino con giba dorsal prominente y una punta nasal ptosica. Al examen estético nasal se encuentra una giba de tipo osteocartilaginosa, con la punta nasal con pobre definición, subproyectada e hiporotada. Se realizó el procedimiento quirúrgico corrigiendo exitosamente las deformidades nasales obteniendo una paciente satisfecha. Conclusiones: Es posible aprovechar el cartílago disponible en pacientes que presentan una giba cartilaginosa y requieren injertos para la corrección de las deformidades nasales, evidenciandobeneficios como evitar incisiones adicionales o la preservación del cartílago septal y auricular.
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Aranegui, Carmen, i Ricardo Mar. "Lixus (Morocco): from a Mauretanian sanctuary to an Augustan palace". Papers of the British School at Rome 77 (listopad 2009): 29–64. http://dx.doi.org/10.1017/s0068246200000039.
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Questo articolo riesamina il lavoro di M. Ponsich, pubblicato nel 1981, sul centro monumentale di Lixus (Morocco). Egli interpretava le strutture trovate negli scavi iniziati da Tarradell nel 1948 come un ínsieme di santuari tra loro legati e databili principalmente in epoca romana. Il nuovo esame dei resti conservati insieme con i più recenti scavi ci permettono di riesaminare questa parte del sito. È possibile identificare i resti di un grande santuario di periodo mauretano (IV-I secolo a.C), che include templi, giardini e magazzini. Nel periodo di Giuba II (30-10 a.C.) al di sopra dei giardini adiacenti ai templi più antichi fu costruito un palazzo. Tale complesso residenziale era dotato di un atrio corinzio e due peristili. È stato anche possibile identificare l'oecus triclinaris, il cryptoporticus, le exedrae e le sale. Nell'articolo si propone che il palazzo sia una delle residenze di Giuba II.
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Kundal, Som Nath, Mohd Imtiaz i Manzoor Ahmed Malik. "Ostracodes Fauna from Core Sediments of Surinsar Lake of Jammu:TheirPalaeoecological andPalaeoclimatic Implications". Journal of Geosciences Research 8, nr 2 (1.07.2023): 170–78. http://dx.doi.org/10.56153/g19088-023-0158-38.
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Surinsar Lake is one of the deepest fresh water lake situated in the Lower Siwalik Subgroup of Jammu, Jammu and Kashmir, India. In the present study,nine species of ostracodes have been recovered from the core sediments of Surinsar Lake, Udhampur district, Jammu and Kashmir, India. These species are identified as Candona candida, C. lactea, C. neglecta, Stenocypris sp., Cypris subglobosa, Cypridopsis sp., Hemicypris pyxidata, Jlyocypris gibba, Potamocypris sp. based on their morphological characters. Out of nine species, four species Candona lactea, Candona neglecta, Jlyocypris gibba and Stenocypris sp., has been already reported from Surinsar Lake and five ostracodes species Hemicypris pyxidata, Potamocypris sp., Cypris subglobosa, Candona candida, Cypridopsis sp. are recovered in addition to already reported species. A brief account on the palaeoecologic and palaeoclimatic implications of fauna recovered is discussed in the present study. Keywords: Ostracodes, Core Sediments, Fresh Water Lake, Surinsar, Lower Siwalik Subgroup, Jammu, India
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Lan, Tianying, Tanya Renner, Enrique Ibarra-Laclette, Kimberly M. Farr, Tien-Hao Chang, Sergio Alan Cervantes-Pérez, Chunfang Zheng i in. "Long-read sequencing uncovers the adaptive topography of a carnivorous plant genome". Proceedings of the National Academy of Sciences 114, nr 22 (15.05.2017): E4435—E4441. http://dx.doi.org/10.1073/pnas.1702072114.
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Utricularia gibba, the humped bladderwort, is a carnivorous plant that retains a tiny nuclear genome despite at least two rounds of whole genome duplication (WGD) since common ancestry with grapevine and other species. We used a third-generation genome assembly with several complete chromosomes to reconstruct the two most recent lineage-specific ancestral genomes that led to the modern U. gibba genome structure. Patterns of subgenome dominance in the most recent WGD, both architectural and transcriptional, are suggestive of allopolyploidization, which may have generated genomic novelty and led to instantaneous speciation. Syntenic duplicates retained in polyploid blocks are enriched for transcription factor functions, whereas gene copies derived from ongoing tandem duplication events are enriched in metabolic functions potentially important for a carnivorous plant. Among these are tandem arrays of cysteine protease genes with trap-specific expression that evolved within a protein family known to be useful in the digestion of animal prey. Further enriched functions among tandem duplicates (also with trap-enhanced expression) include peptide transport (intercellular movement of broken-down prey proteins), ATPase activities (bladder-trap acidification and transmembrane nutrient transport), hydrolase and chitinase activities (breakdown of prey polysaccharides), and cell-wall dynamic components possibly associated with active bladder movements. Whereas independently polyploid Arabidopsis syntenic gene duplicates are similarly enriched for transcriptional regulatory activities, Arabidopsis tandems are distinct from those of U. gibba, while still metabolic and likely reflecting unique adaptations of that species. Taken together, these findings highlight the special importance of tandem duplications in the adaptive landscapes of a carnivorous plant genome.
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Tomašových, Adam, Paolo G. Albano, Tomáš Fuksi, Ivo Gallmetzer, Alexandra Haselmair, Michał Kowalewski, Rafał Nawrot, Vedrana Nerlović, Daniele Scarponi i Martin Zuschin. "Ecological regime shift preserved in the Anthropocene stratigraphic record". Proceedings of the Royal Society B: Biological Sciences 287, nr 1929 (17.06.2020): 20200695. http://dx.doi.org/10.1098/rspb.2020.0695.
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Palaeoecological data are unique historical archives that extend back far beyond the last several decades of ecological observations. However, the fossil record of continental shelves has been perceived as too coarse (with centennial-millennial resolution) and incomplete to detect processes occurring at yearly or decadal scales relevant to ecology and conservation. Here, we show that the youngest (Anthropocene) fossil record on the northern Adriatic continental shelf provides decadal-scale resolution that accurately documents an abrupt ecological change affecting benthic communities during the twentieth century. The magnitude and the duration of the twentieth century shift in body size of the bivalve Corbula gibba is unprecedented given that regional populations of this species were dominated by small-size classes throughout the Holocene. The shift coincided with compositional changes in benthic assemblages, driven by an increase from approximately 25% to approximately 70% in median per-assemblage abundance of C. gibba . This regime shift increase occurred preferentially at sites that experienced at least one hypoxic event per decade in the twentieth century. Larger size and higher abundance of C. gibba probably reflect ecological release as it coincides with an increase in the frequency of seasonal hypoxia that triggered mass mortality of competitors and predators. Higher frequency of hypoxic events is coupled with a decline in the depth of intense sediment mixing by burrowing benthic organisms from several decimetres to less than 20 cm, significantly improving the stratigraphic resolution of the Anthropocene fossil record and making it possible to detect sub-centennial ecological changes on continental shelves.
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Rueda, Jose L., Manuel Fernández-Casado, Carmen Salas i Serge Gofas. "Seasonality in a taxocoenosis of molluscs from soft bottoms in the Bay of Cádiz (southern Spain)". Journal of the Marine Biological Association of the United Kingdom 81, nr 6 (grudzień 2001): 903–12. http://dx.doi.org/10.1017/s0025315401004829.
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The macrofauna of molluscs associated with soft bottoms in the Bay of Cádiz (southern Spain) was studied monthly from February 1994 to January 1996. The number of species (63) is high for a soft bottom and is related to environmental characteristics (growth of macrophytes) and the biogeographical setting of the studied area. Corbula gibba (∼90%) was the dominant species in this taxocoenosis together with the gastropod Nassarius pygmaeus and the bivalves Pandora inaequivalvis, Parvicardium exiguum and Macoma melo. The most frequent species during the two years was also the bivalve Corbula gibba (100%) followed by the gastropods Nassarius pygmaeus, Tricolia tenuis, Rissoa membranacea and the bivalve Macoma melo. Total abundance of the taxocoenosis in both years reached higher values in spring. The dynamics of the ecological indices such as diversity or evenness, and the species richness showed a similar pattern in both years, with low values of diversity and evenness together with high species richness in spring and summer months and the reverse in autumn and winter. The qualitative correspondence analysis of monthly samples shows an ordination related to seasonality in both studied years, however the values of Jaccard's coefficient do not indicate significant boundaries among the monthly samples. The quantitative correspondence analysis shows an ordination and grouping of samples related to the biology of species, particularly with the recruitment of C. gibba, the dominant species. The existence of similar trends in the structure of the taxocoenoses over both years, and the seasonality highlighted by the qualitative correspondence analysis, seems to indicate a certain stability of the ecosystem.
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WEBB, DONALD W., i MARK A. METZ. "The South American genus Nigranitida Metz (Diptera: Therevidae: Therevinae) with the description of three new species". Zootaxa 757, nr 1 (7.12.2004): 1. http://dx.doi.org/10.11646/zootaxa.757.1.1.
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The genus Nigranitida Metz is revised with the description of three new species, N. gibba Webb, N. irwini Webb, and N. margaretae Webb from Argentina. A key to the identification of the four species is included along with illustrations of the genitalia.
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Rachmawati, Desiana. "ANALISIS RASIO LIKUIDITAS DAN SOLVABILITAS UNTUK MENGUKUR KINERJA PERUSAHAAN SEKTOR PENERBANGAN SEBELUM DAN SAAT PANDEMI COVID-19". Jurnal Akuntansi Bisnis dan Ekonomi 7, nr 2 (19.01.2022): 2013–28. http://dx.doi.org/10.33197/jabe.vol7.iss2.2021.778.
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Penelitian ini bertujuan untuk menganalisis kinerja keuangan PT AirAsia Indonesia Tbk (CMPP) dan PT Garuda Indonesia Tbk (GIAA) sebelum pandemi Covid-19 tahun 2017, 2018 dan 2019 yang dibandingkan dengan kinerja keuangan saat pandemi Covid-19 tahun 2020 berdasarkan rasio likuiditas dan rasio solvabilitas. Metode yang digunakan adalah kuantitatif deskriptif menggunakan data sekunder berupa laporan keuangan dan laporan tahunan PT Garuda Indonesia Tbk dan PT AirAsia Indonesia Tbk periode 2017-2020. Rasio likuiditas dihitung dengan menggunakan CR, QR dan Cash Ratio. Rasio solvabilitas dihiutung dengan menggunakan DER dan DR. Hasil penelitian menunjukkan bahwa rasio likuiditas tahun 2020 mengalami penurunan yang sangat drastis. Penurunan pendapatan pada saat pandemi Covid-19 di tahun 2020 berdampak pada berbagai kondisi perusahaan yang mengakibatkan aliran kas masuk, piutang dan aset lancar lainnya yang semakin menurun secara drastis. CMPP dan GIAA mengalami penurunan kinerja solvabilitas yang dapat dilihat dari nilai DER bernilai negatif dan nilai DR lebih dari 1 kali. Penurunan pendapatan pada masa pandemi Covid-19 berdampak pada kerugian yang cukup besar di tahun 2020, sehingga mengakibatkan perusahaan mengalami defisit ekuitas. Sebagai usaha memperoleh pendanaan, perusahaan harus menambah utangnya sekaligus untuk menutup defisit ekuitas. Dengan demikian, utang CMPP dan GIAA di tahun 2020 menjadi sangat besar dibandingkan dengan aset yang dimiliki.
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Szabó, Sándor, Mihály Braun i Gábor Borics. "Elemental flux between algae and duckweeds (Lemna gibba) during competition". Fundamental and Applied Limnology 146, nr 3 (22.10.1999): 355–67. http://dx.doi.org/10.1127/archiv-hydrobiol/146/1999/355.
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Nielsen, Jan Kresten. "Commensal association of Corbula gibba (Bivalvia) and a sub-conical boring". Bulletin of the Geological Society of Denmark 45 (30.01.1999): 135–38. http://dx.doi.org/10.37570/bgsd-1998-45-15.
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An examination of fossil and Recent right valves of the infaunal, suspensionfeeding Corbula gibba (Olivi, 1792) revealed the presence of a slender, sub- conical, unbranched boring. The boring is interpreted as the work of a commensal organism, possible a parasite. Stratigraphic range is from Eocene to Recent.
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Komorowska, Hanna. "Clitocybe splendoides H. E. Bigelow (Agaricales, Tricholomataceae), a new species for Poland". Acta Mycologica 42, nr 2 (23.12.2013): 187–91. http://dx.doi.org/10.5586/am.2007.020.
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Records of <em>Clitocybe splendoides</em> H. E. Bigelow, a rare fungus belonging to the species group of the <em>C. gibba</em> type, associated with deciduous forests, especially beech forests, collected at three localities in Poland are described.
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Scherr, Claudia, Claudia Schneider, Sebastian Patrick Arlt, Stephan Baumgartner i Vera Majewsky. "Reproducibility of the effects of homeopathically potentised Argentum nitricum on the growth of Lemna gibba L. in a randomised and blinded bioassay". Homeopathy 106, nr 03 (sierpień 2017): 145–54. http://dx.doi.org/10.1016/j.homp.2017.04.001.
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Background: A previous study reported a significant statistical interaction between experiment date and treatment effect of Argentum nitricum 14x–30x on the growth rate of duckweed (Lemna gibba L.). The aim of the present study was to investigate the stability of the test system and intra-laboratory reproducibility of the effects found. Methods: Duckweed was treated with A. nitricum potencies (14x–30x) as well as succussed and unsuccussed water controls. The outcome parameter area-related growth rate for day 0–7 was determined by a computerised image analysis system in two series of independent randomised and blinded experiments. Systematic negative control (SNC) experiments were carried out to investigate test system stability. Statistical analysis was performed with full two-way analysis of variance (ANOVA) and protected Fisher's Least Significant Difference (LSD) test. Results: In the first repetition series we found a significant treatment effect (p = 0.016), while in the second series no effect was observed. The negative control experiments showed that the experimental system was stable. An a posteriori subgroup analysis concerning gibbosity revealed the importance of this growth state of L. gibba for successful reproduction of the statistically significant interaction in the original study; flat: no interaction (p = 0.762); slight gibbosity: no interaction (p = 0.356); medium gibbosity: significant interaction (p = 0.031), high gibbosity: highly significant interaction (p = 0.005). Conclusions: With the original study design (disregarding gibbosity status of L. gibba) results of the original study could not be reproduced sensu stricto. We conclude that the growth state gibbosity is crucial for successful reproduction of the original study. Different physiological states of the test organisms used for bioassays for homeopathic basic research must carefully be considered.
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Griguolo, Gaia, Federica Miglietta, Laia Paré, Daniele G. Generali, Antonio Frassoldati, Antonino Musolino, Simon Spazzapan i in. "Abstract P4-02-13: Homologous recombination deficiency, RB-loss gene signatures, intrinsic subtype and response to neoadjuvant treatment in HR+/HER2- early breast cancer: a correlative analysis of two phase II trials". Cancer Research 83, nr 5_Supplement (1.03.2023): P4–02–13—P4–02–13. http://dx.doi.org/10.1158/1538-7445.sabcs22-p4-02-13.
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Abstract Background: Hormone-receptor (HR)+/HER2- breast cancer (BC) is a biologically heterogeneous disease. Homologous recombination deficiency (HRD) and BRCA mutations have been previously reported to be associated with worse outcomes in HR+/HER2- metastatic BC patients receiving CDK4/6 inhibitors and endocrine therapy. Here, we assess the relation between HRD and RB-loss signatures, intrinsic subtyping, the PAM50-based chemo-endocrine score, and response to chemotherapy-based therapy and endocrine treatment in HR+/HER2- early BC. Methods: GIADA is a multicentric neoadjuvant phase II trial that treated premenopausal patients with Luminal B (LumB)-like BC (HR-positive, HER2-negative, with Ki67>20% and/or histologic Grade 3) with a combination of chemotherapy, immunotherapy and endocrine treatment. Expression of 758 genes on baseline tumor samples from all 43 patients was quantified by nCounter platform. The LETLOB phase II trial randomized postmenopausal women with clinical stage II-IIIA HR+/HER2- BC to neoadjuvant letrozole + lapatinib or letrozole + placebo for 6 months (Guarneri, JCO 2014). Gene-expression data (Affymetrix platform) from pre-treatment frozen core-biopsies was available from 66 out of 92 pts enrolled. Intrinsic subtype was assigned using a research-based PAM50 subtype predictor. A published HRD signature (Peng, Nat Commun 2014) and a signature of RB loss (RBsig), previously reported to potentially predict resistance to CDK4/6 inhibitors in HR+/HER2- BC (Malorni, Oncotarget 2016) were computed. The PAM50 based chemo-endocrine score (CES) was calculated using published definition (Prat, CCR 2017). Higher values of CES indicate increased endocrine sensitivity, while lower values indicate chemosensitivity. Association between genomic signatures was assessed through Pearson’s correlation coefficient. Association of genomic signatures with pCR was assessed through logistic regression and association with PEPI scores was assessed through Kruskal-Wallis test. Results: HRD signature levels were significantly higher in non-luminal (Basal-like and HER2-enriched) tumors as compared to Luminal (A or B) tumors (p>0.001 in the GIADA trial, p=0.021 in the LETLOB trial). Moreover, higher levels of HRD signature were associated with higher levels of RB-loss signature (Pearson correlation 0.355, p=0.020 in the GIADA trial; Pearson correlation 0.942, p< 0.001 in the LETLOB trial), higher levels of Basal-like signature (Pearson correlation 0.502, p< 0.001 in the GIADA trial; Pearson correlation 0.373, p=0.002 in the LETLOB trial) and lower levels of CES (Pearson correlation -0.422, p=0.005 in the GIADA trial; Pearson correlation -0.763, p< 0.001 in the LETLOB trial), indicative of higher chemosensitivity. In the GIADA trial, higher levels of HRD signature (p=0.018) and RBloss signature (p=0.073) and lower levels of CES (p=0.007) were associated with higher pCR rates after chemo, endocrine and immunotherapy. In the LETLOB trial, lower levels of HRD signature (p=0.068) and RBloss signature (p=0.042) and higher levels of CES (p=0.050) were associated with higher sensitivity to endocrine treatment (lower PEPI scores, 0 vs 1-3 vs 4 or more, after neoadjuvant letrozole). Conclusions: In HR+/HER2- early BC, HRD gene signatures, RB-loss gene signatures and non-luminal (especially Basal-like) intrinsic subtyping are associated with each other and associated with higher sensitivity to chemotherapy-based therapy and lower sensitivity to endocrine treatment. These observations might help correctly tailor systemic therapy, including biologic agents, in patients with HR+/HER2- early and advanced BC. Citation Format: Gaia Griguolo, Federica Miglietta, Laia Paré, Daniele G. Generali, Antonio Frassoldati, Antonino Musolino, Simon Spazzapan, Grazia Vernaci, Tommaso Giarratano, Marcello Lo Mele, Giancarlo Bisagni, Federico Piacentini, Enrico Tagliafico, Katia Cagossi, Francesca Schiavi, Claudia Pinato, Aleix Prat, Valentina Guarneri, Maria Vittoria Dieci. Homologous recombination deficiency, RB-loss gene signatures, intrinsic subtype and response to neoadjuvant treatment in HR+/HER2- early breast cancer: a correlative analysis of two phase II trials [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P4-02-13.
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Edgar, Robert. "URMAP, an ultra-fast read mapper". PeerJ 8 (24.06.2020): e9338. http://dx.doi.org/10.7717/peerj.9338.
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Mapping of reads to reference sequences is an essential step in a wide range of biological studies. The large size of datasets generated with next-generation sequencing technologies motivates the development of fast mapping software. Here, I describe URMAP, a new read mapping algorithm. URMAP is an order of magnitude faster than BWA with comparable accuracy on several validation tests. On a Genome in a Bottle (GIAB) variant calling test with 30× coverage 2×150 reads, URMAP achieves high accuracy (precision 0.998, sensitivity 0.982 and F-measure 0.990) with the strelka2 caller. However, GIAB reference variants are shown to be biased against repetitive regions which are difficult to map and may therefore pose an unrealistically easy challenge to read mappers and variant callers.