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| Registros recuperados: 7.979 | |
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| AAMIR,M.; KHAN,E.A.; BALOCH,M.S.; ASLAM,M.. |
| ABSTRACT: Lathyrus aphaca is an aggressive dicotyledonous weed. The effect of different agroecological components/factors on the germination ecology of this weed was explored under a glasshouse and laboratory condition in 2014. The germination response of L. aphaca was lower at high temperature while maximum seed germination was found at 15/12 oC (day/night). Light significantly stimulated L. aphaca germination; nevertheless, substantial germination occurred under dark conditions. More than 86-90% of L. aphaca seeds germinated at pH level of 6.2-7.5. A significant quantity of seed germinated at 250 mM NaCl. There was no germination at -1 MPa. When the temperature was lower than 20/15 oC (day/night) initiation time of germination and germination index (GI)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osmotic stress; Weed seeds; Salt stress; Temperature; PH; Light. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100253 |
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| Aardema, Hedy M.; Rijkeboer, Machteld; Lefebvre, Alain; Veen, Arnold; Kromkamp, Jacco C.. |
| Marine waters can be highly heterogeneous both on a spatial and temporal scale, yet monitoring programs currently rely primarily on low-resolution methods. This potentially leads to undersampling. This study explores the potential of two high-resolution methods for monitoring phytoplankton dynamics: fast repetition rate fluorometry for information on phytoplankton photosynthesis and productivity and automated scanning flow cytometry for information on phytoplankton abundance and community composition. These methods were tested in combination with an underway Ferrybox system during four cruises on the Dutch North Sea in April, May, June, and August 2017. The high-resolution methods were able to visualize both the spatial and temporal variability of the... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00584/69635/67492.pdf |
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| Abanto-Rodríguez,Carlos; Alves Chagas,Edvan; Farias Araújo,Wellington; Gongalves Paulichi,Matheus; García de Lima,Jodo Vitor; Medeiros de Oliveira,Eduardo; Lopes Monteiro Neto,Jodo Luiz; da Silva Maia,Sonicley; Sanchez-Choy,José; Panduro Tenazoa,Nadia Masaya. |
| Abstract The objective in this study was to determine the nutrient contents in Myrciaria dubia plants in function of five K2O doses (0, 40, 80, 120 and 160 kg ha-1) applied through fertigation. Leaf dry matter (LDM), total dry matter (TDM), and leaf nutrient contents were evaluated. The LDM and TDM were higher in plants subjected to the dose of 160 kg ha-1 of K2O, with 52.44 g and 302.69 g, respectively. Leaf N and K contents were 22.15 and 9.48 g kg-1 in response to 160 kg ha-1 of K2O. The mean P, Ca and S contents were 1.6, 17.89 and 1.61 g kg-1, respectively, and the content of Mg2 + decreased from 5.62 to 2.74 g kg-1 at the dose of 0 and 160 kg ha-1 of K2O, respectively. The B, Mn and Fe contents decreased from 136.5 to 100.0, 346.24 to 248, and from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomic management; Camu-camu; Caqari; Leaf analysis; Mineral nutrition. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000400291 |
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| ABBAS,A.; KHALIQ,A.; SAQIB,M.; MAJEED,M.Z.; ULLAH,S.; HAROON,M.. |
| ABSTRACT: Weeds cause considerable damage to rice crop. To ascertain the influence of different weed management practices under different tillage systems, a field experiment was conducted during 2014-15. Experimental design was RCB with split-plot arrangement and with a net plot size of 6 x 2 m. Three tillage systems viz; zero tillage with glyphosate application and conventional tillage with and without stale seed bed, and seven weed management treatments viz; weedy check, manual weeding, oxadiargyl as pre-emergence, pyrazosulfuron as pre-emergence, pyrazosulfuron as post-emergence, fenoxaprop-ethyle + sodium fluoride as post-emergence and fenoxaprop-ethyle + sodium fluoride as post-emergence. Results revealed that all treatments including tillage systems... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Direct-seeded rice; Tillage systems; Herbicides; Integrated weed management. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100280 |
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| Abbas,G; Ahmad,F; Saeed,M; Ayasan,T; Mahmood,A; Yasmeen,R; Kamboh,A. |
| ABSTRACT The aim of this project was to investigate the effect of dietary inclusion of sodium bicarbonate (NaHCO3) on nutrient digestibility and immune response of caged layers during summer when the temperature exceeds 40 ˚C. For immune response trial, White Leghorn layers (n=160; 24 weeks old) were purchased from a poultry farm and were divided into five treatment/diets groups (4 replicate/treatment). Diet A, was without NaHCO3 and served as control whereas, diets B, C, D, and E contained 0.5, 1.0, 1.5 and 2.0% NaHCO3, respectively. All these birds were vaccinated against Newcastle disease (ND) virus at the start of the experiment and thereafter with one-month intervals. Blood samples were collected from two birds/replicate at 10 days post vaccination... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heat stress; Layers; Newcastle disease; Nutrient digestibility; Sodium bicarbonate. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200339 |
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| Abbasi,Muhammad Athar; Riaz,Sajid; Rehman,Aziz-ur-; Siddiqui,Sabahat Zahra; Shah,Syed Adnan Ali; Ashraf,Muhammad; Lodhi,Muhammad Arif; Khan,Farman Ali. |
| The aim of the present research work was to investigate the enzyme inhibitory potential of some new sulfonamides having benzodioxane and acetamide moieties. The synthesis was started by the reaction of N-2,3-dihydrobenzo[1,4]-dioxin-6-amine (1) with 4-methylbenzenesulfonyl chloride (2) in the presence of 10% aqueous Na2CO3 to yield N-(2,3-dihydrobenzo[1,4]-dioxin-6-yl)-4-methylbenzenesulfonamide (3), which was then reacted with 2-bromo-N-(un/substituted-phenyl)acetamides (6a-l) in DMF and lithium hydride as a base to afford various 2-{2,3-dihydro-1,4-benzodioxin-6-yl[(4-methylphenyl)sulfonyl]amino}-N-(un/substituted-phenyl)acetamides (7a-l). All the synthesized compounds were characterized by their IR and 1H-NMR spectral data along with CHN analysis data.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benzodioxane; Acetamide; Spectral analysis; A-Glucosidase; Acetylcholinesterase; Molecular docking. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100518 |
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| abd el-aziz, mahmoud. |
| The inhibitory affects of different concentrations of high and low molecular weight of chitosan (CH-HMw and CH-LMw, respectively) and chitosan nanoparticles (CH-HMw-NPs and CH-LMw-NPs, respectively) against linear growth and spores/sclerotia germination of the 18 phytopathogenic fungi of tomato, potato and green bean were evaluated in vitro. The studies showed that CH-HMw-NPs and CH-LMw-NPs were highly effective against all tested pathogenic fungi compared with CH-HMw and CH-LMw. Furthermore, CH-HMw-NPs and CH-LMw-NPs at concentrations 0.1% and 0.05% showed completely inhibited (100%) the mycelial growth of all tested pathogens. Meanwhile, Chitosan HMw and LMw at 1.0% caused 100% reduction of all tested pathogenic fungi. Rhizoctonia solani and Fusarium... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5425 |
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| abd el-rasoul, khalid ahmed. |
| The main objectives of work are to experiments and measurements for the optical, electrical, physical and chemical properties of strawberry fruits. Strawberry were classified into three grades according to The varieties of strawberry (Festival ,Fortona and Red Marline Strawberry). The strawberry fruits were exposure by visible laser to determine optical and electrical signal reflections of strawberry. The samples were classified into six kinds of defects of strawberry according to codex specification of strawberry. It was found that the high value of physical properties was Fortona variety while the low value is Festival variety, but the physical properties of Red Marlin variety intermediate between value of fortona and festival varietyIt was found that... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4996 |
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| Abdallah, Florence; Lecellier, Gael; Raharivelomanana, Phila; Pichon, Chantal. |
| Rauvolfia nukuhivensis is a well-known plant used for its wide range of beneficial effects in Marquesas islands. It is made up of diverse indole alkaloids and is used as traditional medicine for skin application. The actual mechanism behind the virtue of this plant is still unknown. Hence, in this study we aimed at deciphering the impact of R. nukuhivensis on skin immune system in context of (1) homeostasis, (2) pathogen infection and (3) inflammation. Here we show that R. nukuhivensis enhances cellular metabolic activity and wound healing without inducing cellular stress or disturbing cellular homeostasis. It reinforces the epithelial barrier by up-regulating hBD-1. Nevertheless, in pathogenic stress, R. nukuhivensis acts by preparing the immune system to... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00659/77130/78499.pdf |
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| Abdallah,Walid Elsayed; Elsayed,Wael Mohamady; Hassan,Rasmia Ali; Nazif,Naglaa Mohammed; Ali,Mohammed Ibrahim; Abdelshafeek,Khaled Abdelhady. |
| Investigation of the lipid constituents of the aerial parts of Phyllanthus atropurpureus resulted in isolation and identification of the fatty acid mixture which consists of eight acids with linolenic acid as major and the unsaponifiable fraction that contain a series of hydrocabons, sterols, in addition to one triterpene (α-amyrin). The acetone insoluble fraction was found to contain two fatty alcohols and three n-hydrocabons in which the n-eicosane is the most abundant (44.16%). The flavonoidal constituents were isolated from ethyl acetate and butanol fractions which were identified as: luteolin-7-O-glucoside, kaempferol 3-O-(p-coumaroylglucoside), kaempferitrin, luteolin and kaempferol. Evaluation of different extracts as acetylcholinesterase inhibitors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phyllanthus atropurpureus; Euphorbiaceae; Flavonoids; Acetylcholineesterase inhibitors; Antioxidant. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100575 |
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| Abdelghani,E; Xing,W; Li,Y; Shen,D; Alsiddig,MA; Li,C. |
| ABSTRACT To investigate the effects of soy isoflavones (ISF) on the laying performance of Xueshan breeder hens at different phases of the egg production cycle, 32 weeks (wks) old local Chinese breeder hens were assigned to two groups with three replicates (750 hens/replicate) for control and treatment groups. Then every group was divided into three sub-groups following 4, 12, and 20 wks administration of control or ISF diet. General Linear Model procedure was used (2× 3), and treatments were considered of two factors (diets and time) with different levels (control and ISF diets; 4, 12, and 20 wks of diet supply time). Basal diet with 3 mg/kg ISF was used. Performance, egg quality, organs relative weight and cholesterol level were measured at three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Xueshan hens; Egg quality; Hatching traits; Organs weight; Cholesterol. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400315 |
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| Abdollah pour, Samsollah; Zareishahamat, Ebrahim; Maysami, Mohammadali. |
| Annually about 0.2 million hectares of farms in Iran country are not harvested. The main reason of not harvested area is the lack of a suitable machine for harvesting small and rough fields. To prevent damage caused by not harvested area, a machine with a 1 m length cutter bar and 6.5 hp engines that was suitable for small farms, having high reliability and manoeuvrability on rough terrain was designed, fabricated and evaluated. The results of machine performance evaluation showed that forward speed has a significant effect on field efficiency and crop losses. Increasing the machine forward speed caused decreasing the field efficiency and increasing crop losses. The forward speed of 0.5 m/s had the lowest crop losses and was less exhausting and had the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5479 |
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| Abdou, Melina; Schafer, Jorg; Hu, Ruoyu; Gil-diaz, Teba; Garnier, Cedric; Brach-papa, Christophe; Chiffoleau, Jean-francois; Charmasson, Sabine; Giner, Franck; Dutruch, Lionel; Blanc, Gerard. |
| Platinum (Pt) is considered a Technology Critical Element (TCE) and an emerging metallic contaminant with increasing release into the environment. Gaps in knowledge and understanding of environmental levels, fate and effects of Pt still exist, especially in the marine environment. This work presents Pt concentrations in the northwestern Mediterranean coast including: (i) temporal variability from sediment cores and farmed mussels in the Toulon Bay (historically affected by intense human activities) and (ii) spatial distribution from recent wild mussels collected along ∼ 300 km coastline with contrasting ecosystems (including natural reserves), quantified using voltammetry and inductively coupled plasma-mass spectrometry. The historical (> 100 years)... |
| Tipo: Text |
Palavras-chave: Platinum; Sediments; Mussels; Biomonitoring; Mediterranean coast. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00460/57134/59055.pdf |
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| ABEGG,ARTHUR D.; AZEVEDO,WEVERTON S.; FRANCO,FRANCISCO L.; DUARTE,MARCELO R.. |
| Abstract: We recorded a second specimen of the poorly known insular blind snake Liotyphlops caissara. This new specimen expands the morphological variation of the number of dorsal scales in the genus Liotyphlops to 296 (vs. 304 in L. wilderi) and, considering the fact that the holotype of this species was destroyed, the present specimen represents the only available L. caissara individual in zoological collections. Also, this new record constitutes the first out of type locality and expands the distribution of the species in about 40 km to the northeastern. According to IUCN criteria (B1a, b [iii]), we suggest that L. caissara be included in the “Endangered” category, since it occurs in only two insular locations and exhibits an occurrence extension of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic rainforest; Geographic distribution; Morphological variation; Southeastern Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500611 |
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| Abegunrin, Toyin Peter; Adesina, Adetunji Emmanuel; Awe, Gabriel Oladele; Ojo, Olumiyiwa Idowu. |
| This study was conducted to evaluate the effect of different irrigation regimes on soil water dynamics and temporal associations with other water-atmospheric variables in a tomato field under different drip irrigation regimes in southwestern Nigeria. The experiment was 3 x 3 randomized complete block design (RCBD) with a split plot arrangement of treatments in three replicates. Irrigation frequencies of applying water every 7, 5 and 3 days designated as F1, F2, and F3, respectively serve as the main plot of the experiment while irrigation depth of 100, 75 and 50% of crop water requirement ( ) designated as D1, D2 and D3 are the sub-plots. During the growing season, soil water storage (SWS) was monitored in soil depths of 0-5, 5-10, 10-20 and 20-30 cm using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Irrigation Engineering; Soil Science; Soil Physics Agriculture Soil water status; Classical regression; State-time analysis; Irrigation frequency irrigation depth. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4726 |
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| Abele, Elisabeth; Fleck, Michael; Hartung, Jens; Zikeli, Sabine; Graeff-Hönninger, Simone. |
| Die Dauer von der Pflanzung der Zucchinipflanze (Cucurbita pepo L.) bis zu deren Bildung der ersten pistillaten Blüte und schließlich Frucht variiert je nach Umwelt. In diesem Experiment wurden die Tage von der Pflanzung bis zum Beginn der ersten pistillaten Blüte sowie die Bildung der ersten Frucht von zwei verschiedenen Zucchini-Genotypen unter biologischen Anbaubedingungen ausgewertet. Die beiden Genotypen wurden zu drei verschiedenen Zeitpunkten (jeweils einen Monat auseinander) innerhalb einer Anbauphase gepflanzt. Die Gradwachstumstage (GDD) wurden berechnet, um mögliche Unterschiede zwischen den beiden Genotypen zu bewerten. Die erzielten Ergebnisse zeigten Unterschiede zwischen der erforderlichen Anzahl von Tagen und GDD nach dem Pflanzen bis zum... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables. |
| Ano: 2019 |
URL: http://orgprints.org/36188/1/Beitrag_261_final_a.pdf |
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| Registros recuperados: 7.979 | |
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