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Статті в журналах з теми "Polyethelene"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Arjal, Taufik, and Rafidah Rafidah. "PENGOLAHAN LIMBAH PLASTIK JENIS POLYETHELENE TEREPHALATE (PET) DAN HIGH DENSITY POLYETHELENE (HDPE) MENJADI BAHAN BAKAR MINYAK." Sulolipu: Media Komunikasi Sivitas Akademika dan Masyarakat 20, no. 2 (December 25, 2020): 266. http://dx.doi.org/10.32382/sulolipu.v2i20.1741.

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Menurut Asosiasi Industri Plastik Indonesia (INAPLAS) dan Badan Pusat Statistik (BPS), sampah plastik di Indonesia mencapai 64 juta ton/ tahun dimana sebanyak 3,2 juta ton merupakan sampah plastik yang dibuang ke laut . Menurut sumber yang sama,, kantong plastik yang terbuang ke lingkungan sebanyak 10 milliar lembar per tahun atau sebanyak 85.000 ton kantong plastik. Tujuan penelitian ini adalah untuk mengetahui kemampuan alat pengolahan limbah plastik dengan menggunakan metode pirolisis menjadi bahan bakar minyak. Jenis penelitian ini merupakan kuasi eksperimen. Mengetahui kemampuan alat dalam menghasilkan bahan bakar minyak dan untuk mengetahui banyaknya penurunan sampah dengan pemanfaatan limbah plastik menjadi Bahan Bakar Minyak (BBM). Hasil penelitian ini yaitu dapat menghasilkan Bahan Bakar Minyak (BBM) yaitu sebanyak : PET=14,3 ml, HDPE=12,6 ml, PET dan HDPE=12 ml dengan penurunan padatan sampah plastik sebanyak : PET=0,5 atau 50%, HDPE=0,4 atau 40%, serta PET dan HDPE=0,5 atau 50% dari masing-masing 1 kg plastik. Kesimpulan penelitian ini adalah alat pirolisator Tidak mampu menghasilkan Bahan Bakar Minyak (BBM) sebanyak ≤1200 ml. Untuk itu, diharapkan peneliti selanjutnya perlu melakukan penelitian lebih lanjut mengenai pengaruh suhu terhadap proses pirolisis plastik, jenis fraksi pada minyak hasil pirolisis, dan apabila dikembangkan dalam skala produksi maka perlu diteliti lagi menggunakan reaktor yang lebih baik, sehingga proses pengolahan bisa berlangsung terus menerus. Kata kunci: Limbah Plastik Jenis Polyethelene Terephalate (PET) dan High Density Polyethelene (HDPE) , Bahan Bakar Minyak

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2

ONAH, Donatus Chimaobi, Sabinus Oscar O. EZE, and Patrick Emeka ABA. "Partial Purification and Characterisation of Alcohol Dehydrogenase from Acetobacter aceti Isolated from Palm Wine." Notulae Scientia Biologicae 8, no. 2 (June 17, 2016): 232–36. http://dx.doi.org/10.15835/nsb829810.

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Palm wine is a very important alcoholic beverage whose consumption is limited because it spoils easily. The study was designed to isolate Acetobacter aceti from palm wine, then extract, purify and characterize alcohol dehydrogenase (AD) from the A. aceti. Muller Hilton agar was used as medium for the growth of A. aceti for 48 h. The cells were harvested and subjected to ultrasonication using 500 watt ultrasonicator. Enzyme assay was carried out in both the supernatant and pellet. The enzyme was precipitated by polyethelene glycol 6000 while gel filtration was used for purifying the enzyme. The effects of pH, temperature and substrate concentration on AD were evaluated. The isolated A. aceti was gram negative, rod shaped, catalase positive, oxidase negative and was able to oxidize acetic acid to CO2 and H2O. Triton X-100 (0.3%) was the most effective concentration in solubilizing the protein (AD), while 15% polyethelene glycol 6000 was the most effective concentration for the precipitation of AD. An optimal pH of 5 was obtained with an optimal temperature of 50 °C. The most appropriate to solubilize and precipitate AD were 0.3% triton X-100 and 15% polyethelene glycol 6000 respectively, while AD activity was reduced under acidic pH, as well as for low and high temperatures.

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3

Hilal, Zahraa Hadi, and Shorouq Jasim Jabbar. "Preparation and (TiO2-ZnO) Polyethelene for Food Preservation." Journal of Physics: Conference Series 1818, no. 1 (March 1, 2021): 012023. http://dx.doi.org/10.1088/1742-6596/1818/1/012023.

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4

Alkhanov, P. Sh, S. A. Bektashi, G. H. Musayeva, M. A. Manafov, M. C. Rajabova, S. M. Khalilova, and Valeh Jafarov. "Influence of polyacrylate on properties of polyethelene compositions." Herald of the Azerbaijan Engineering Academy 13, no. 4 (2021): 85–99. http://dx.doi.org/10.52171/2076-0515_2021_13_04_85_99.

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5

Patil, Dilip, Vijendra Batra, and Sushil Kapoor. "Catalytic Depolymerization and Kinetics of Polyethelene Terepthalate by Saponification." Oriental Journal of Chemistry 30, no. 3 (September 26, 2014): 1227–31. http://dx.doi.org/10.13005/ojc/300338.

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6

Arni, R. K., L. Watanabe, M. Fontes, D. S. Burdette, and J. G. Zeikus. "Crystallization of the Secondary Alcohol Dehydrogenase from Thermoanaerobacter ethanolicus 39E." Protein & Peptide Letters 3, no. 6 (December 1996): 423–26. http://dx.doi.org/10.2174/092986650306221101141104.

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Abstract: The secondary alcohol dehydrogenase from the thermophile Thermoanaerobacter ethanolicus 39E has been crystallized at 40°C by vapour difussion using polyethelene glycol as a precipitant. The orthorhombic crystals belong to the space group P 21212 with cell constants of a=170.0A, b=125.7A and c=80.5A.A native X-ray diffraction data set has been collected to 2.7A resolution .

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7

Dolhanty, Dorothy. "Effectiveness of Splinting for Carpal Tunnel Syndrome." Canadian Journal of Occupational Therapy 53, no. 5 (December 1986): 275–80. http://dx.doi.org/10.1177/000841748605300506.

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In order lo determine the effectiveness of splinting for reducing the sympioms of carpal tunnel syndrome a prospective study was performed on the hands of 12 patients. A pre-test post-test non-equivalent control group design was utilized. A polyethelene working splint worn for one week was found to significantly reduce the intensity and frequency of the symptoms of numbness, pain, and tingling associated with carpal tunnel syndrome.

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8

Batchelor, T. A., R. L. O'Donnell, J. J. Roby, and E. Grant-Mackie. "The efficacy of chlorpyrifos impregnated polyethelene film in controlling leafroller." Proceedings of the New Zealand Weed and Pest Control Conference 38 (January 8, 1985): 50–52. http://dx.doi.org/10.30843/nzpp.1985.38.9488.

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9

WU, Hui, Wei WANG, and Zhaohui SU. "CRYSTALLIZATION AND ORIENTATION OF POLYETHELENE IN ANODIC ALUMINUM OXIDE TEMPLATES." Acta Polymerica Sinica 009, no. 5 (July 3, 2009): 425–29. http://dx.doi.org/10.3724/sp.j.1105.2009.00425.

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10

Simpson, J. M., and W. W. Schur. "Creep behavior of 6 micrometer linear low density polyethelene film." Advances in Space Research 13, no. 2 (February 1993): 37–40. http://dx.doi.org/10.1016/0273-1177(93)90271-c.

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11

Valenzuela, Hector R., and Joseph DeFrank. "214 LIVING-MULCH AND GENOTYPE EFFECT ON THE PRODUCTIVITY AND GROWTH OF EGGPLANT." HortScience 29, no. 5 (May 1994): 460b—460. http://dx.doi.org/10.21273/hortsci.29.5.460b.

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Living mulches offer a low-input alternative to achieve weed control while minimizing herbicide applications, decreased fertilizer leaching, insect and nematode management. and improved soil texture. A study was conducted to evaluate the effect of a Rhodes Grass (Chloris gayana cv. Katambora) living mulch on the growth and productivity of ten eggplant. Solanum melongena, cultivars grown under fertigation. The living sod was established at the Univ. Hawaii Waimanalo Experiment Station in June 1992. Soil analysis was taken before experiment initiation. Ten eggplant cultivars were transplanted on both living-mulch and control (woven-polyethelene mulch) plots on 4 March 1993. Weekly or bi-weekly harvests were conducted for six months. beginning on 19 May 1993. In addition plant height and canopy dimensions were determined on 16 April. and 10 Nov. Plant growth was monitored throughout the experiment. Soil samples were taken from the eggplant rhizosphere, hare-ground and in Rhodes grass monoculture, for nematode count determinations. Soil samples were also taken for nutrient determination after completion of the experiment. Overall yields were greater in the polyethelene mulch than in the living mulch plots. A differential response was observed on the response of cultivars to cropping system. However the most vigorous cultivars performed well in both systems. The living mulch system showed potential for nematode management in eggplant agroecosystems.

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12

Plaut, Zvi, and Evelyn Federman. "A Simple Procedure to Overcome Polyethelene Glycol Toxicity on Whole Plants." Plant Physiology 79, no. 2 (October 1, 1985): 559–61. http://dx.doi.org/10.1104/pp.79.2.559.

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13

Samsonov, M. V., and A. A. Gureev. "Feasibility of Modifying Properties of Road Asphalts With Polyethelene and Plasticizers." Chemistry and Technology of Fuels and Oils 49, no. 5 (November 2013): 420–24. http://dx.doi.org/10.1007/s10553-013-0463-3.

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14

Okamoto, Tatsuki, and Toshikatsu Tanaka. "Nondestructive discharge pulses at the inception of treeing breakdown in polyethelene." Electrical Engineering in Japan 105, no. 5 (1985): 1–10. http://dx.doi.org/10.1002/eej.4391050501.

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15

Bai, Shu-Lin, Gong-Tao Wang, Jean-Marie Hiver, and Christian G'Sell. "Microstructures and mechanical properties of polypropylene/polyamide 6/polyethelene-octene elastomer blends." Polymer 45, no. 9 (April 2004): 3063–71. http://dx.doi.org/10.1016/j.polymer.2004.02.070.

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16

Mercuri, Louis G. "Ultra-high molecular weight polyethelene fossa wear and incidence of adverse events." Journal of Oral and Maxillofacial Surgery 62, no. 7 (July 2004): 906–7. http://dx.doi.org/10.1016/j.joms.2004.04.006.

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17

Wittmann, J. C., and B. Lotz. "Polymer decoration of layer silicates: Crystallographic interactions at the polyethelene-talc interface." Journal of Materials Science 21, no. 2 (February 1986): 659–68. http://dx.doi.org/10.1007/bf01145538.

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18

Alwi, Ifan Nur, Roma Yuli F. Hutapea, and Boby Wisely Ziliwu. "Spesifikasi dan Hasil Tangkapan Jaring Insang di Desa Prapat Tunggal Specifications of Gill Nets and Gill Nets Catches in Prapat Tunggal Village." Aurelia Journal 2, no. 1 (November 27, 2020): 39. http://dx.doi.org/10.15578/aj.v2i1.9391.

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Jaring insang adalah alat tangkap yang memiliki konstruksi berbentuk persegi panjang, Spesifikasi alat tangkap jaring insang terdiri dari tali ris atas, tali ris bawah, badan jaring, pelampung, pemberat, pelampung tanda. Alat tangkap jaring insang berbahan dasar Nylon/PE (Polyethelene), metode pengoperasian jaring insang dilakukan dengan cara memotong arus ataupun menghadang ruaya ikan. Tujuan penelitian ini untuk mengetahui spesifikasi dan hasil tangkapan jaring insang di Desa Prapat Tunggal. Hasil tangkapan jaring insang (gillnet), terdiri dari hasil tangkapan utama dan hasil tangkapan sampingan. Hasil tangkapan utamanya adalah ikan bawal dan hasil tangkapan sampingannya yaitu ikan pari, ikan hiu pari, ikan duri dan ikan talang-talang

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19

Terzi, N. U., F. Yılmazturk, S. Yıldırım, and H. Kılıç. "Experimental Investigations of Backfill Conditions on the Performance of High-Density Polyethelene Pipes." Experimental Techniques 36, no. 2 (February 16, 2011): 40–49. http://dx.doi.org/10.1111/j.1747-1567.2010.00691.x.

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20

Tangwattanachuleeporn, Marut, Phijitra Muanwien, Yothin Teethaisong, and Poorichya Somparn. "Optimizing Concentration of Polyethelene Glycol for Exosome Isolation from Plasma for Downstream Application." Medicina 58, no. 11 (November 4, 2022): 1600. http://dx.doi.org/10.3390/medicina58111600.

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Background: Exosomes are ubiquitous extracellular nanovesicles secreted from almost all living cells that are thought to be involved in several important cellular processes, including cell–cell communication and signaling. Exosomes serve as a liquid biopsy tool for clinical and translational research. Although many techniques have been used to isolate exosomes, including ultracentrigation, size-exclusion chromatography, and immunocapturing-based techniques, these techniques are not convenient, they require expensive instrumentation, and they are unhandy for clinical samples. Precipitation techniques from available commercial kits that contain polyethelene glycol (PEG) are now widely used, but these kits are expensive, especially if a large number of biological samples are to be processed. Objective: the purpose of this study is to compare and optimize the efficacy of different concentrations of PEG with two commercial kits ExoQuick (SBI) and Total Exosome Isolation (TEI) from Invitrogen in human plasma. Methods and Materials: we determined exosome quantity, size distribution, marker expression, and downstream application. Results: among the precipitation methods, we found the size of particles and concentrations with 10–20% PEG are similar to ExoQuick and better than TEI. Interestingly, we detected cfDNA with ExoQuick and 10–20% PEG but not TEI and 5% PEG. Moreover, 10% PEG detection of miR-122 and miR-16 expression was superior to ExoQuick and TEI. Furthermore, in proteomics results it also found the identified proteins better than commercial kits but there was a high level of contamination of other proteins in serum. Conclusions: together, these findings show that an optimal concentration of 10% PEG serves as a guide for use with clinical samples in exosome isolation for downstream applications.

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21

Noorhashimah, Mohamad Nor, Abdul Razak Khairunisak, Azlan Abdul Aziz, and Rahmah Noordin. "Iron Salt Concentration Effect to the Precipitation of Iron Oxide Nanoparticles Conjugated Antibody." Advanced Materials Research 620 (December 2012): 268–72. http://dx.doi.org/10.4028/www.scientific.net/amr.620.268.

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This study covers the effect of ferrous chloride (FeCl2) concentration on the formation of iron oxide nanoparticles (IONPs) via the precipitation method. IONPs with appropriate surface functionalization were synthesized in order to obtain a stable colloidal IONPs (ferrofluid) for the conjugation process. The electrostatic repulsion using percloric acid (HClO4) and steric stabilization using silane polyethelene glycol (SiPEG) were generated. The optimum concentration of FeCl2was at 0.3 M. From the transmission electron microscopy (TEM) image, the size of IONPs obtained was ~13 nm. The stable IONPs were then conjugated to the antibody and tested in the lateral flow immunoassay as the labelling agent. The conjugated IONPS with the antibody was proven sensitive to the Brugian Filiarisis disease.

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22

Morandin, Lora A., Terence M. Laverty, Robert J. Gegear, and Peter G. Kevan. "Effect of greenhouse polyethelene covering on activity level and photo-response of bumble bees." Canadian Entomologist 134, no. 4 (August 2002): 539–49. http://dx.doi.org/10.4039/ent134539-4.

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AbstractWe conducted laboratory experiments assessing the relationship between commercial greenhouse polyethylene coverings and bumble bee, Bombus impatiens Cresson (Hymenoptera: Apidae), activity and loss from ventilation systems. Bee activity was measured in four small greenhouses, each with a different polyethylene covering. Bee activity was quantified using photodiode tunnels mounted in the hive entrances. Contrary to commercial greenhouse experiments, there was no difference in bee activity based on covering type. There was a positive linear relationship between temperature in the experimental greenhouses and bee activity. The potential for bee loss through open ventilation systems for five covering types was quantified using a Y-maze decision box. Bees were more attracted to direct light than to light transmitted through ultraviolet (UV) blocking coverings, whereas bees were equally attracted to direct light as they were to UV-transmitting coverings. These experiments suggest that greenhouses with UV-transmitting plastics may result in less bee loss through ventilation systems.

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23

Banumathi, N., S. Subhashini, and R. Rajalakshmi. "Polyethelene Glycol-Anthranilic Acid Composite as Corrosion Inhibitor for Mild Steel in Acid Medium." E-Journal of Chemistry 7, s1 (2010): S67—S74. http://dx.doi.org/10.1155/2010/630592.

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The polymer PGA composite was prepared by chemical oxidative method of polyethylene glycol, anthranilic acid with ammonium persulphate in oxalic acid medium. The resulted polymer was characterized by FTIR spectroscopy. The performance of the polymer polyglycol anthranilic acid composite (PGA) as corrosion inhibitor for mild steel in 1 M HCl has been studied by weight loss, potentiodynamic and impedance spectroscopy methods. The maximum IE was found to be 97%. Experimental results were fitted to Langmuir adsorption isotherm. Electrochemical studies confirmed the inhibitive nature of the PGA composite and also the mixed nature of the inhibitor. The polymer is found to be highly efficient non-toxic and environmentally safe.

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24

Bai, Shu-Lin, and Min Wang. "Plastic damage mechanisms of polypropylene/polyamide 6/polyethelene-octene elastomer blends under cyclic tension." Polymer 44, no. 21 (October 2003): 6537–47. http://dx.doi.org/10.1016/s0032-3861(03)00739-0.

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25

Millar, A. J. W., H. Rode, J. Buchler, and S. Cywes. "Whole-gut lavage in children using an iso-osmolar solution containing polyethelene glycol (golytely)." Journal of Pediatric Surgery 23, no. 9 (September 1988): 822–24. http://dx.doi.org/10.1016/s0022-3468(88)80231-8.

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26

Ghamdi, A. A. Al, S. Al Heniti, F. Salman, N. Abdel Aal, E. H. El Mossalamy, and Farid El Tantawy. "Dielectric properties of Bi-based superconductors nanoparticles filled natural rubber/low density Polyethelene nanocomposites." International Journal of Nanoparticles 2, no. 1/2/3/4/5/6 (2009): 458. http://dx.doi.org/10.1504/ijnp.2009.028781.

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27

Hendry, E., G. Taylor, K. Ziemnicka, F. Grennan Jones, J. Furmaniak, and B. Rees Smith. "Recombinant human thyroid peroxidase expressed in insect cells is soluble at high concentrations and forms diffracting crystals." Journal of Endocrinology 160, no. 3 (March 1, 1999): R13—R15. http://dx.doi.org/10.1677/joe.0.160r013.

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Human thyroid peroxidase (TPO), the key enzyme in thyroid hormone synthesis, can be produced in active form in the High Five insect cell line and when purified from the cell culture medium is soluble at concentrations of up to 18 mg/ml. This contrasts to a recent report in which human TPO produced in insect cells was found to be insoluble at high concentrations. Our concentrated TPO grows trigonal trapezohedral crystals of up to 0.5 mm in length in a vapour diffusion apparatus using polyethelene glycol as a precipitant. The crystals diffract X-rays to a 6 A resolution and the diffraction data from the crystals have been analysed giving unit cell dimensions. A potential molecular replacement solution has been identified using myeloperoxidase (MPO) as a phasing model.

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28

Lubi, Ahmad, La Ode M Firman, and Sorimuda Harahap. "RANCANG BANGUN MESIN PENGOLAHAN SAMPAH PLASTIK HIGH DENSITY POLYETHELENE MENJADI BAHAN BAKAR MENGGUNAKAN PROSES PIROLISIS." JURNAL KAJIAN TEKNIK MESIN 2, no. 2 (August 20, 2017): 81–88. http://dx.doi.org/10.52447/jktm.v2i2.969.

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Анотація:

Penelitian ini membahas mengenai rancang bangun reaktor pirolisis dan bertujuan untuk mengetahui proses kerja dan nilai karakteristik bahan bakar yang dihasilkan. Reaktor yang digunakan mempunyai ukuran diameter 41 cm dan tinggi 66 cm. Proses pirolisis dilakukan pada kisaran suhu 250–450oC. Dari penelitian ini menggunakan bahan baku seberat 5 kg dan didapatkan bahan bakar cair sebanyak 2,5 Kg. Adapun karakteristik bahan bakar cair yang dihasilkan adalah kandungan air 3,22 mm/kg, density 727,6 kg/m3 dan nilai oktan 60,4.

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29

Buchler, J., and S. Cywes. "Whole-Gut Lavage in Children Using an Iso-Osmolar Solution Containing Polyethelene Glycol (Go-LYTELY)." Journal of Urology 141, no. 4 (April 1989): 1048. http://dx.doi.org/10.1016/s0022-5347(17)41135-9.

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30

Haw, Pei Li, Norhamidi Muhamad та Hadi Murthadha. "The Characterization and Flow Behavior of 316L Stainless Steel Feedstock for Micro Metal Injection Molding (μMIM)". Applied Mechanics and Materials 44-47 (грудень 2010): 2872–76. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2872.

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The rheological behaviors of the Micro Metal Injection Molding feedstock are important for the stability of the feedstock during micro injection molding process and quality of the final micro-components. Homogeneous feedstocks are preferable for MIM process to ensure the dimensional consistency of molded components and prevent the defects of powder-binder separation or particle segregation. In this work, feedstocks with various formulations of 316L stainless steel and binder system were prepared by using Brabender Plastograph EC Plus mixer. The binder system comprises of palm stearin, polyethelene (PE) and stearic acid. In order to obtain the viscosity, activation energy, flow behavior and mold ability index, the rheological characterization of the feedstocks were investigated in numerous conditions by using Shimadzu 500-D capillary rheometer The study showed that all of the 316L stainless steel feedstocks are homogenous with pseudo-plastic behaviors.

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31

Wahab, Noraini Abd, Mohd Afian Omar, Nor Amalina Nordin, Rosliza Sauti, and M. D. Kamal Bahrin. "Influence of Waste Rubber on the Properties and Microstructure of Injection Moulded M2 High Speed Steel." Advanced Materials Research 845 (December 2013): 939–44. http://dx.doi.org/10.4028/www.scientific.net/amr.845.939.

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New feedstock formulation for metal injection moulding (MIM) of Molybdenum High Speed Steel (M2 HSS) has been developed. The binder is a multicomponent system consisting of major binder paraffin wax (PW), stearic acid (SA) and minor binder polyethelene waste rubber (PEWR). Injection moulding was conducted successfully using a powder loading of 0.65. Scanning electron micrograph of the green injection moulded part revealed homogenous distribution of the M2 HSS particles in the wax matrix. Paraffin wax and stearic acid were driven off by immersing the injection moulded part into n-heptane for five hours. Vacuum sintering of the brown parts at a temperature range of 1240°C-1280°C resulted in high quality M2 HSS parts. The properties of the sintered part such as physical, mechanical and microstructure were studied and discussed to evaluate the influence of waste rubber in MIM of M2 HSS.

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32

SAITOH, Takayuki, Kanji MATSUMOTO, Kazuho NAKAMURA, Wakako HIRAYAMA, Tadashi NITTAMI, Michiko HOTAI, and Kazuyoshi TAKEDA. "Coordination Behavior of Metal Ions with the Linear Polyether Chains Grafted onto Polyethelene Non-Woven Fabric." Journal of Ion Exchange 20, no. 3 (2009): 120–26. http://dx.doi.org/10.5182/jaie.20.120.

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Stockman, J. A. "Treatment of Faecal Impaction with Polyethelene Glycol Plus Electrolytes (PGE + E) Versus Lactulose as Maintenance Therapy." Yearbook of Pediatrics 2008 (January 2008): 171–73. http://dx.doi.org/10.1016/s0084-3954(08)70372-5.

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34

Ollivere, Ben J., Hilary A. Bosman, Philip W. P. Bearcroft, and Andrew H. N. Robinson. "Foreign body granulomatous reaction associated with polyethelene ‘Fiberwire®’ suture material used in Achilles tendon repair." Foot and Ankle Surgery 20, no. 2 (June 2014): e27-e29. http://dx.doi.org/10.1016/j.fas.2014.01.006.

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35

Zhang, Zhou Sheng, Yi Xun Xu, and Ai Qing Ma. "Measurements and Classifications of PD Pulse on HDPE Specimens during Degradation." Advanced Materials Research 354-355 (October 2011): 1235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.1235.

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Discharge may take place in high voltage apparatuses in the form of void discharge, corona discharge and surface discharge. Understanding of the discharge is very important to know the condition of the insulation. Partial discharge (PD) current pulse waveforms contain essentially all the available information concerning the PD generation and thus the available information concerning the physical mechanism of degradation and breakdown of insulation. In this paper, three types of discharge model for polyethelene insulation material are constructed and the PD current pulse waveforms are extracted from experiments. In order to obtain pulse waveform characteristics, the extracted pulse waveforms are pre-selected and normalized, and then a Sampling Counting Ratio (SCR) classification technique is investigated to reveal the multi-peak and oscillation information about the PD current pulse waveforms. Results show that the classification would enable us to estimate the progress and degree of the degradation.

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Anas, Diab, Neuman Michelle M, Diab Kareem, and Gordon Daniel. "Unusual presentation of oxalate nephropathy causing acute kidney injury: A case report." Journal of Clinical Nephrology 4, no. 3 (November 4, 2020): 077–79. http://dx.doi.org/10.29328/journal.jcn.1001063.

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Oxalate nephropathy due to Hyperoxaluria and elevated serum oxalate level is a well-known cause for interstitial fibrosis, and ESRD. Conditions associated with high serum Oxalate, should be considered as a possible contributing factor for a patient’s tubular injury. Well known cause for Hyperoxaluria including enteric Hyperoxaluria (due to gastric bypass, chronic pancreatitis, small Bowel resection, or malabsorption, as well as depletion of enteric oxalate-degrading bacteria [e.g., Oxalobacter). Other known causes of oxalate nephropathy include primary Hyperoxaluria, ethylene glycol intoxication, vitamin B6 deficiency, excessive ingestion of vitamin C or dietary substances rich in oxalic acid, aspergillosis, prolonged renal failure and various drugs (e.g., Known medications to cause Oxalate Nephropathy are: Orlistat, Praxilene, COX-2 inhibitors). Unusual presentation with Acute Kidney Injury with incidental finding of high serum Oxalate in a patient with a known CKD stage III, recently started on Polyethelene Glycol to treat his constipation.

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Matsko, Nadejda B., Franz P. Schmidt, Ilse Letofsky-Papst, Artem Rudenko, and Vikas Mittal. "In situ Determination and Imaging of Physical Properties of Soft Organic Materials by Analytical Transmission Electron Microscopy." Microscopy and Microanalysis 20, no. 3 (February 28, 2014): 916–23. http://dx.doi.org/10.1017/s1431927614000348.

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AbstractAnalytical transmission electron microscopy (ATEM) offers great flexibility in identification of the structural—chemical organization of soft materials at the level of individual macromolecules. However, the determination of mechanical characteristics such as hardness/elasticity of the amorphous and polycrystalline organic substances by ATEM has been problematic so far. Here, we show that energy filtered TEM (EFTEM) measurements enable direct identification and study of mechanical properties in complex (bio-)polymer systems of relevance for different industrial and (bio-)medical applications. We experimentally demonstrate strong correlations between hardness/elasticity of different polymers (polycaprolactone, polylactid, polyethelene, etc.) and their volume plasmon energy. Thickness and anisotropy effects, which substantially mask the material contrast in EFTEM bulk plasmon images, can be adequately removed by normalizing the latter by carbon elemental map. EFTEM data has been validated using atomic force microscopy phase images, where phase shift related to the hardness and elastic modulus of the materials.

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Awodiji, C. T. G., S. Sule, and C. V. Oguguo. "Comparative study on the strength properties of paving blocks produced from municipal plastic waste." Nigerian Journal of Technology 40, no. 5 (May 13, 2022): 762–70. http://dx.doi.org/10.4314/njt.v40i5.1.

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In this study, municipal plastic waste is used in producing paving blocks. Binders in the form of melted waste plastic bottles (Polyethelene Terephthalate (PET)) and water sachets (High Density Polyethylene (HDPE) with river sand, were used in making the blocks. Mix ratios; 1:1, 1:1.5 and 1:2 of sand-plastic waste were considered. Sand-cement mixes were adopted as the controls. 230mm x 140mm x 55mm blocks were cast, cured in water at ambient temperature and tested for 72-hours for water absorption and 21 days compressive strength. 3 specimen were prepared for each mixture. Sand-HDPE mix produced stronger blocks than sand-PET and sand-cement mixes. Topmost compressive strength of 17N/mm2 was generated from sand-HDPE mix of 1:2. Sand-PET blocks should be avoided since they generate very low strengths. Sand-plastic waste blocks melt faster at higher temperatures. Therefore, plastic paving blocks can only be used for light load pavements not subjected to high temperature.

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Chua Abdullah, Muhammad Ilman Hakimi, Abu Bakar Sulong, Norhamidi Muhamad, Mohd Fazuri Abdullah, and Che Hassan Che Haron. "Optimization of Injection Parameters Using 16µm Stainless Steel Powder (SS316L) at 63 Vol. %, 63.5 Vol. % and 64 Vol. % Powder Loading by Taguchi Method for Metal Injection Molding." Key Engineering Materials 471-472 (February 2011): 558–62. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.558.

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In this paper, injection molding parameters are optimized using the L18 Taguchi orthogonal array for mechanical strength and surface quality of the green part. The feedstock used consists of stainless steel powder (SS316L) with the powder loading of 63 vol. %, 63.5 vol. % & 64 vol. %. The binder compositions used are polyethelene glycol (PEG-73 wt.%), polymethyl methacrilate (PMMA-25 wt.%) and stearic acid (4 wt.%). Mould temperature, injection temperature, injection pressure, injection time, holding time and powder loading ware selected as signal factors using Taghuci’s method based on literature, where these parameters were significant in MIM. Results showed that the optimum parameters are: mold temperature at 650C, injection temperature at1450C, injection pressure at 650 bar, injection flow rate at 20 m3/s, holding time at 5 s and powder loading of 64 vol.%. Analysis of Variance (ANOVA) result shown that mold temperature is the most influence in order to produce good green part’s surface quality while powder loading give the best result for green part’s strength.

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Wahab, Nor‘aini, Mohd Afian Omar, Nor Amalina Nordin, and Rosliza Sauti. "The Potential of Starch as an Eco-Friendly Binder in Injection Moulding of 316L Stainless Steel for Medical Devices Applications." Advanced Materials Research 911 (March 2014): 200–204. http://dx.doi.org/10.4028/www.scientific.net/amr.911.200.

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Two starch/wax based binders were formulated for metal injection moulding of 316L stainless steel. The formulations difffer in term of the starch type which substitute the backbone polyethelene. Feedstock having powder loading of the stainless steel powder up to 65 vol.% can be injection moulded successfully. Solvent debinding was performed in water at a temperature of 60°C for 3 hours and followed by immersion n-heptane for duration of 2 hours to remove the residual wax. The remaining binder was thermally extracted at 4500 with heating rate of 3°C/min, with no defects. The parts were then sintered in vacuum atmosphere within a temperature range of 1300°C to 1380°C. Approximately, 6.8 g/cm3theoretical density, hardness of 188.8 HV and tensile strength of 229.3 MPawere achieved for cassava starch/wax based binder while rice starch/wax based binder possessed 8.6g/cm3theoretical density, hardness of 385 HV and tensile strength of 462.1 MPa.

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41

Pucci, Andrea, Giacomo Ruggeri, Letizia Moretto, and Simona Bronco. "Effect of the structure of the polymer matrix on the terthiophene chromophore dispersion in dichroic polyethelene films." Polymers for Advanced Technologies 13, no. 10-12 (October 2002): 737–43. http://dx.doi.org/10.1002/pat.258.

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42

Parrondo, Aitor, Norman S. Allen, Michele Edge, Christopher M. Liauw, and Eusebio Fontán. "Optimization of additive packages for processing and long-term thermal stabilization of film grade high-density polyethelene." Journal of Vinyl and Additive Technology 8, no. 2 (June 2002): 103–17. http://dx.doi.org/10.1002/vnl.10351.

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43

Anita, Anita. "UJI TEKAN POLYETHYLENE FIBER AKHIRAN FERULLE PADA INSISIVUS PERTAMA MAKSILA." Jurnal Ilmiah dan Teknologi Kedokteran Gigi 16, no. 1 (July 3, 2020): 12. http://dx.doi.org/10.32509/jitekgi.v16i1.911.

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Latar belakang : pasak intraradikuler terbukti dapat memberikan dukungan pada restorasi gigi yang telah dirawat endodontik. Fiber reinforced composite memiliki modulus elastisitas mendekati dentin, dimana hal ini baik untuk menyalurkan tekanan kunyah ke akar. Polyethylene fiber merupakan jenis pasak yang banyak berkembang belakangan ini karena memiliki kelebihan mudah dibentuk serta memberikan estetik yang baik. Metode : penelitian ini bertujuan untuk mengetahui kekuatan tekan polyethelene fiber sebagai bahan pasak inti pada gigi insisivus pertama maksila. Sampel sebanyak 7 gigi insisivus pertama maksila yang telah dirawat endodontik, dibuatkan pasak dan inti. Hasil : dilakukan uji tekan pada permukaan palatal inti komposit dengan sudut 135 derajat terhadap sumbu panjang gigi, diperoleh nilai uji tekan paling tinggi sebesar 661,62 N dan paling rendah sebesar 120,27 N. Hasil uji tekan memiliki nilai rata-rata uji tekan sebesar 438,57 N, dengan standar deviasi 177,82. Daya kunyah rata-rata pada insisivus pertama pada pria yaitu 147,17 N, sedangkan pada wanita yaitu 93,88 N. Kesimpulan : dari penelitian ini adalah polyethylene fiber dengan akhiran ferulle dapat digunakan sebagai bahan pasak yang mampu menahan daya kunyah pada gigi insisivus pertama maksila.

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44

Noorhashimah, Mohamad Nor, Khairunisak Abdul Razak, and Rahmah Noordin. "The Effect of Oxygen Precursor Concentration to the Iron Oxide Nanoparticles Properties for Lateral Flow Immunoassay Application." Advanced Materials Research 1024 (August 2014): 277–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.277.

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In this study, the influence of hydrogen peroxide (H2O2) concentration to the iron oxide nanoparticles (IONPs) properties prepared using the precipitation method was investigated. The H2O2concentration was varied from 0.85 M to 5.1 M. The concentration of H2O2influenced the crystallinity and the growth rate of the IONPs precipitates. Increasing the concentration of H2O2increased the crystallinity and expedited the growth rate of IONPs. The optimum concentration of H2O2was 1.7 M. From the transmission electron microscopy (TEM) images, the size of IONPs obtained was ~14 nm and the X-ray diffraction (XRD) spectra showed the presence of spinel cubic lattice of maghemite (γ-Fe2O3). The magnetic measurement of IONPs using vibrating sample magnetometer (VSM) was showed that the IONPs exhibited superparamagnetic properties. Furthermore, the electrostatic repulsion using percloric acid (HClO4) and steric stabilization using silane polyethelene glycol (SiPEG) were created surround IONPs in order to obtain a stable colloidal IONPs for the conjugation process. The stable IONPs were then conjugated to the antibody and tested in the lateral flow immunoassay as the labelling agent.

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45

Shrivastava, Vaibhav, Akhil Nema, Pravin Kumar Kushwaha, and Sandeep Shrivastava. "Formulation of Modified Dense Graded Bituminous Macadam with Low Density and High Density Polythene with Zykotherm Admixture." SMART MOVES JOURNAL IJOSCIENCE 5, no. 5 (May 11, 2019): 9. http://dx.doi.org/10.24113/ijoscience.v5i5.203.

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This study presents the use of waste polythene derived as carry bags from kitchen waste and pond liner polyethelene as LDPE and bottle caps as HDPE as an additive in flexible pavements. In this study we will also add a fix percentage of zykotherm. Purposes of using above materials are to utilize environmentally unacceptable waste material and to develop a better material mix to resist increased traffic load and temperature effect resulting cracks in the pavement surface. In the proposed study the plastic waste will be cleaned and cut into a size such that it passes through 2-3mm sieve using shredding machine. In this study Dense Bituminous Macadam (DBM) mix will be proposed to prepare by using plain bitumen as a control specimen and bitumen mixed with LDPE 2% and 4% & HDPE 2%, 3%, 4%, 5%) as by weight, with fixed percentage of Zykotherm as 1.5% by weight.Bitumen content is 4.5% by weight for all specimen. The Marshall Stability test, Penetration Test, and softening point test, were conducted on control and modified DBM mixes.

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46

Pardoyo, C. Azmiyawati, S. Ningsih, Suhartana, and M. C. Djunaidi. "The influence of polyethelene glycol concentration on silica xerogel synthesis from geothermal sludge to Pb(II) ions adsorption." Journal of Physics: Conference Series 1943, no. 1 (July 1, 2021): 012162. http://dx.doi.org/10.1088/1742-6596/1943/1/012162.

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47

Targhagh, Hamid, and Reza Fazaeli. "Fabrication and Microwave Absorption Properties of Low Density Polyethelene-CoFe₂O₄ Nanocomposite." Nanoscience and Nanotechnology Letters 6, no. 4 (April 1, 2014): 295–300. http://dx.doi.org/10.1166/nnl.2014.1788.

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48

Prasad, Ramshetti Rajendra, Jadi Rajendra Kumar, Bakshi Vasudha, and Chettupalli Ananda Kumar. "FORMULATION DEVELOPMENT AND EVALUATION OF ALLOPURINOL SOLID DISPERSIONS BY SOLVENT EVAPORATION TECHNIQUE." International Journal of Applied Pharmaceutics 10, no. 4 (July 7, 2018): 168. http://dx.doi.org/10.22159/ijap.2018v10i4.25311.

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Objective: The main objective of the research work is to develop and characterize allopurinol (ALPN) solid dispersions with different polymers to enhance solubility, enrich dissolution profile and improve patient compliance.Methods: ALPN solid dispersions were prepared by solvent evaporation technique using various grades of polyethelene glycol (PEG) such as PEG 4000 and PEG 6000 with different ratios like 1:0.5, 1:1, 1:1.5 and 1:2 and after formation of solid dispersions all physicochemical properties were examined.Results: All the formulations were found within the permissible pharmacopoeial limits for various physicochemical parameters. The pre-formulation studies, like Fourier, transform infrared spectroscopy (FTIR) showed the absence of drug-excipient interactions. The solubility and dissolution profiles of the sample were increased with increasing the concentration of ALPN solid dispersions. Solvent evaporation was proved to be a successful technique for the development of stable solid dispersion of ALPN. The dissolution amount percentage of ALPN formulations was found between 39.58±2.5 to 94.95±1.8 % within 60 min.Conclusion: Hence, from the all evaluation studies, it was evident that F1 formulation was the better formulation. F1 formulation (ALPN: PEG 4000 in the ratio of 1:0.5), 94.95±1.8 % drug released within 50 min.

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49

Pepinsky, R. B., W. C. Lee, M. Cornebise, A. Gill, K. Wortham, L. L. Chen, D. R. Leone та ін. "Design, Synthesis, and Analysis of a Polyethelene Glycol-Modified (PEGylated) Small Molecule Inhibitor of Integrin α4β1 with Improved Pharmaceutical Properties". Journal of Pharmacology and Experimental Therapeutics 312, № 2 (14 жовтня 2004): 742–50. http://dx.doi.org/10.1124/jpet.104.075648.

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Fodeke, Adedayo A., Olusanjo I. Adewale, and Temidayo Ogumoyole. "High Concentration of Inert Solutes (Ficol 70 and Polyethelene Glycol 6000) Stabilize the Native form of Clarias Gariepianus GST (cgGST)." Biophysical Journal 116, no. 3 (February 2019): 49a. http://dx.doi.org/10.1016/j.bpj.2018.11.310.

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