Relevant bibliographies by topics / Palm chat

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Academic literature on the topic 'Palm chat'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Palm chat"

1

Fenger, Kirsten, and Erik Niebuhr. "DISCRIMINANT ANALYSIS OF DERMATOGLYPHIC SOLE AND PALM PATTERNS IN DANISH CRI DU CHAT PROBANDS AND NORMAL CONTROLS." Journal of Intellectual Disability Research 29, no. 3 (2008): 281–88. http://dx.doi.org/10.1111/j.1365-2788.1985.tb00339.x.

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2

Adamou, Ala-Eddine, Rabie Tabib, Mohamed Kouidri, Mohamed Laïd Ouakid, Michał Glądalski, and Jerzy Bańbura. "Egg Size and Shape Variation in Rufous Bush Chats Cercotrichas Galactotes Breeding in Date Palm Plantations: Hatching Success Increases with Egg Elongation." Avian Biology Research 11, no. 2 (2018): 100–107. http://dx.doi.org/10.3184/175815618x1520281116334.

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In oviparous taxa such as birds, clutch characteristics (e.g. egg size, egg mass and the number of eggs) can be considered as energetic investment in reproduction. In this paper, we study variation in the principal component indices of egg size and shape in Rufous Bush Chats (Cercotrichas galactotes) breeding in date palm plantations in the Al Amri Oasis, north Algeria, in 2008–2009 and 2011–2013. For descriptive and comparative purposes, we also present characteristics of egg length, breadth, volume, shape and mass. The size and shape indices as well as dimensions and masses of the eggs laid by particular females tended to be similar to one another, with most variation occurring between clutches (significant repeatabilities for all egg traits). Variation in the size of eggs was influenced by the year-laying date interaction, while variation in the shape (elongation) of eggs was marginally significantly affected by the year-laying date interaction. Year had a significant factor effect on the size of eggs. We also found that hatching success was affected by interactions between year and egg size and shape principal components, thus confirming the existence of fitness-related consequences of variation in the traits of Rufous Bush Chat eggs. Notably, we found that in some years hatching success increased with the elongation of eggs.
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3

Broschat, T. K., and H. Donselman. "Effects of Fruit Maturity, Storage, Presoaking, and Seed Cleaning on Germination in Three Species of Palms." Journal of Environmental Horticulture 5, no. 1 (1987): 6–9. http://dx.doi.org/10.24266/0738-2898-5.1.6.

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Green, half ripe and ripe fruit of queen [Arecastrum romanzoffianum (Cham.) Becc.], pygmy date (Phoenix roebelenii O'Brien) and royla palms [Roystonea regia (HBK) O. F. Cook] were cleaned or left uncleaned and were presoaked in 1000 mg/1 gibberellic acid (GA,) for 48 hr, water for 48 hr, were not presoaked. Queen palm seed germinated best if cleaned green or half-ripe seed was used, but pygmy date and royal palm seed germinated best when cleaned half-ripe or ripe seed was used. Cleaned seed of these palms can be stored in sealed polyethylene bags at 23°C (73°F) for 4 to 9 months. Depending on the species, and royal palm seed benefited from storage of up to 9 months, presumably due to immature seed embryos at time of harvest.
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4

Cruz, Wilton Pires da, Cristiane Krug, Geraldo J. N. Vasconcelos, and Gilberto J. de Moraes. "Mite (Arachnida: Acari) diversity and abundance on oil palms in the central region of the Brazilian Amazonia." Systematic and Applied Acarology 24, no. 9 (2019): 1736–50. http://dx.doi.org/10.11158/saa.24.9.10.

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The African oil palm, Elaeis guineensis Jacq., is the second oil producing plant most extensively cultivated worldwide. The American oil palm, Elaeis oleifera (Kunth) Cortés, is a similar species rarely planted for commercial oil production, but often used for the production of hybrids with the African oil palm. The objective of this work was to compare the mite fauna of different genotypes of the African and the American oil palms as well as of their hybrids. In total, three and five genotypes of the African and the American oil palms and two of their hybrids available at an experiment station in the central part of the Brazilian Amazonia (Campo Experimental Rio Urubu, Embrapa Amazônia Ocidental, Rio Preto da Eva, Amazonas State) were evaluated. Samples were collected in the wet (May 2012) and the dry (October, November 2013) seasons. On American oil palms, mite density was much higher in the wet than in the dry season, while on palms of other groups no significant differences were observed between seasons. Phytophagous mites corresponded to 91.1% of all mites found and Eriophyoidea was by far the most abundant group of these mites. Plant damage by this and other mite groups was not noticed. Mites of the family Tenuipalpidae, to which Raoiella indica Hirst belongs, were not found in this study. In previous studies, R. indica was reported to cause severe damage to several plant species. Phytoseiid species richness and diversities were also higher in the American oil palms than on palms of other groups. The phytoseiids Amblyseius perditus Chant & Baker and Iphiseiodes kamahorae De Leon were the most abundant predators, the first almost exclusively on BR 174 and Coari, and the second, on Manicoré genotypes of the American oil palms. Phytoseiid diversity on hybrids was as low as on African oil palm genotypes in the dry season and lower than on other palm groups in the wet season.
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5

Chen, Yen-Hau, Max Schmid, Chia-Chi Chang, Ching-Yuan Chang, and Günter Scheffknecht. "Lab-Scale Investigation of Palm Shell Char as Tar Reforming Catalyst." Catalysts 10, no. 5 (2020): 476. http://dx.doi.org/10.3390/catal10050476.

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This research investigated the application of palm shell char as a catalyst for the catalytic steam reforming of tar after the sorption enhanced gasification (SEG) process. The catalytic activities of palm shell char and metal-supported palm shell char were tested in a simulated SEG derived syngas with tar model compounds (i.e., toluene and naphthalene) at a concentration of 10 g m−3 NTP. The results indicated that palm shell char had an experimentally excellent catalytic activity for tar reforming with toluene and naphthalene conversions of 0.8 in a short residence time of 0.17 s at 900 °C. A theoretical residence time to reach the complete naphthalene conversion was 1.2 s at 900 °C for palm shell char, demonstrating a promising activity similar to wood char and straw char, but better than CaO. It was also found that potassium and iron-loaded palm shell chars exhibited much better catalytic activity than palm shell char, while the parallel reaction of gasification of K-loaded palm shell char influenced the conversion with its drastic mass loss. Moreover, contrary to CaO, palm shell char presented relatively low selectivity to benzene, and its spontaneous gasification generated extra syngas. In summary, the present study demonstrated that the low-cost material, palm shell char, can successfully be used as the tar-reforming catalyst after SEG process.
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6

Punsuwan, Natthaya, and Chaiyot Tangsathitkulchai. "Product Characterization and Kinetics of Biomass Pyrolysis in a Three-Zone Free-Fall Reactor." International Journal of Chemical Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/986719.

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Pyrolysis of biomass including palm shell, palm kernel, and cassava pulp residue was studied in a laboratory free-fall reactor with three separated hot zones. The effects of pyrolysis temperature (250–1050°C) and particle size (0.18–1.55 mm) on the distribution and properties of pyrolysis products were investigated. A higher pyrolysis temperature and smaller particle size increased the gas yield but decreased the char yield. Cassava pulp residue gave more volatiles and less char than those of palm kernel and palm shell. The derived solid product (char) gave a high calorific value of 29.87 MJ/kg and a reasonably high BET surface area of 200 m2/g. The biooil from palm shell is less attractive to use as a direct fuel, due to its high water contents, low calorific value, and high acidity. On gas composition, carbon monoxide was the dominant component in the gas product. A pyrolysis model for biomass pyrolysis in the free-fall reactor was developed, based on solving the proposed two-parallel reactions kinetic model and equations of particle motion, which gave excellent prediction of char yields for all biomass precursors under all pyrolysis conditions studied.
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7

Lerkkasemsan, Nuttapol. "Kinetic Modeling of CO2 Gasification Reactivity of Palm Kernel Shell (PSK)." Materials Science Forum 886 (March 2017): 122–27. http://dx.doi.org/10.4028/www.scientific.net/msf.886.122.

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This research demonstrates the investigation of gasification reactivity behavior of palm kernel shell bio char using thermogravimetric analysis (TGA) at 850, 900 or 950°C under CO2. There are three fluid-solid kinetic models used to describe the reaction behavior of palm kernel shell bio char. The three models are volumetric model (VM), grain model (GM), and random pore model (RPM). From model results, the GM model and RPM model describe the reaction quite well. However, the GM model is considered as the best model in all three models to describe the reactivity of palm kernel shell bio char gasification reaction. From the GM model, the reaction starts from the surface and it moves to the core. As time go on, the gasify agent will defuse through the core and it keep the reaction go into the core. The activation energy of gasification reactivity of palm kernel shell bio char are 150kJ/mol for GM model. From the results, the coefficient of determination of GM model are 0.989, 0.989, and 0.961 at 850, 900, 950°C respectively.
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8

Fatimah, M. Sayuti, and Elsa Putri Pertiwi. "Quality control of palm kernel oil using Individual Moving Range (I-MR) chart." MATEC Web of Conferences 204 (2018): 01006. http://dx.doi.org/10.1051/matecconf/201820401006.

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Quality is one of the issues that requires special attention in the operation of a company since it can affect the relationship between producers and consumers as well as reduce the company’s losses. PT. Z is a company that mainly produces Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). The problem that often occurs in this factory is that the quality of processed palm kernel is under the set standard of the company, especially palm kernel products, resulting in a loss for the company indirectly. To minimize the loss, the quality control must be conducted. The purpose of this research is to control the quality of palm kernel by using individual moving range (I-MR) chart. From the research result, it is found that the level of impurities in the palm kernel products still require control because the value was above the company's provision which is ≤ 6 while the research result was > 6.
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9

Lucas, E. B., O. E. Itabiyi, and O. O. Ogunleye. "Optimization of Products Yields from the Pyrolysis of Palm Kernel Shells Using Response Surface Methodology." Applied Mechanics and Materials 575 (June 2014): 13–16. http://dx.doi.org/10.4028/www.scientific.net/amm.575.13.

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This work focussed on the optimisation of product yields from the pyrolysis of palm kernel shells (PKS). 479g of dried PKS were loaded into the retort and then placed inside the furnace chamber and this was pyrolysed at 300, 400, 500, 600 and 700°C. The pyrolysis products obtained are char, tar (pyro oil and pyroligneous acid) and gas. A full factorial design (FFD) consisting two factors (Temperature and duration of pyrolysis) at three level was used to study the pattern of product yields from the pyrolysis of PKS. Char, tar and gas were evaluated as the responses. Thirteen experimental runs resulted from the FFD with a minimum product yield of 0.9wt% and maximum product yield of 99wt%. Response surface methodology was used to analyse the results of the FFD of the product yields of PKS. The optimum conversion yields expressed as a percentage of oven-dried weight of palm kernel shells of char, tar and gas products at their respective pyrolysing temperatures were 99wt% char at 304°C, 35wt% tar at 700°C and 39% gas at 700°C. The duration for the pyrolysis process was 20mins for 479g of dried palm kernel shells. The results of the work show that palm kernel shells can be readily pyrolised to obtain optimum yield of gas, tar (mixture of pyrolitic oil and pyroligneous acid) and char.
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10

Aderemi, Hamzat Bashir, Noor Shawal Nasri, and Muhammad Abbas Ahmad Zaini. "Physicochemical properties of char derived from palm fatty acid distillate." Malaysian Journal of Fundamental and Applied Sciences 14, no. 3 (2018): 403–6. http://dx.doi.org/10.11113/mjfas.v14n3.1084.

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The present work was aimed to evaluate the physiochemical properties of chars derived from palm fatty acid distillate. The palm fatty acid distillate was heat-treated at 500 °C and 600 °C in a muffle furnace for 0.5 h, and the resultant products were characterized for elemental composition, surface functional groups, thermogravimetric profile and methylene blue adsorption. Results show that the char samples are rich in carbon content with unique surface functional groups that could be useful in the liquid-phase adsorption. The solid chars depict a thermally stable profile with the increase of temperature during the heat treatment. The char demonstrated the maximum removal of methylene blue of 7.6 mg/g and obeyed the monolayer-trend adsorption of Langmuir isotherm. The findings concluded that the palm fatty acid distillate-based char could be an adsorbent candidate for the removal of methylene blue.
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