Journal articles: 'Polytron'

1

Lindquist, Arne. "Pitch, Polytron, and polyurethane: a comparison." Applied Optics 25, no. 21 (November 1, 1986): 3796. http://dx.doi.org/10.1364/ao.25.003796.

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2

Liu, Sean X., Diejun Chen, George E. Inglett, and Jingyuan Xu. "The Effect of Thermo-Mechanical Processing on Physical Properties of Processed Amaranth and Oat Bran Composites." Journal of Food Research 6, no. 2 (March 8, 2017): 82. http://dx.doi.org/10.5539/jfr.v6n2p82.

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Amaranth-oat composites were developed using gluten free amaranth flour containing essential amino acids and minerals with oat products containing β-glucan, known for lowering blood cholesterol. Amaranth flour and oat bran concentrate (OBC) composites (1:4) were processed using different technologies, including dry mixing, baking, steaming, cold wet blending, and high speed homogenizing (Polytron PT6000) with cold water or hot water. The results showed that water holding capacities, pasting, and rheological properties were dramatically increased by wet blending, Polytron with cold water, and Polytron with hot water followed by drum drying. The processing procedures created dissimilar physical properties that will enhance the application of ancient grains and oat for functional foods that are suitable for people who are gluten-intolerant. In addition, the dietary fiber contents of composites were increased by the incorporation of OBC. The composites can be inexpensively prepared and processed. The new healthful products will be affordable for people who suffer from celiac disease or gluten-intolerant. These innovative gluten-free functional food products will help millions of gluten sensitive consumers enjoy heart-healthy functional foods.

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3

Busch, H., K. Lehmann, and M. Georgi. "Digitale Bildverstärker-Radiographie - Einjährige Erfahrung mit einem Polytron-System." RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren 151, no. 09 (September 1989): 268–73. http://dx.doi.org/10.1055/s-2008-1047175.

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4

Manullang, Asna, and Muhamad Romi Ramdan. "PENERAPAN METODE ABC DALAM PENGENDALIAN PERSEDIAAN PADA DIVISI GMS DI GIANT BOTANI SQUARE BOGOR (Studi Kasus Di departement Electronik)." Jurnal Ilmiah Binaniaga 12, no. 02 (April 28, 2019): 61. http://dx.doi.org/10.33062/jib.v12i02.286.

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Tujuan yang ingin dicapai dalam penelitian ini adalah sebagai berikut: untuk mengetahui pengelolaan dan pengendalian persediaan barang pada Divisi GMS Giant Botani Square Bogor, untuk mengetahui cara mengimplementasikan persediaan barang dengan metode ABC Divisi GMS. Pada Divisi GMS produk yang masuk kedalam Kategori A sebanyak 232 item dari total 890 item yang tersedia, mempunyai kontribusi sales ke departemen sebesar 42.54 % dan 20.32 % kontribusi sales ke divisi GMS. Untuk kategori B, contoh barang (POLYTRON LED 20INCH PLD20D900) memiliki volume tahunan hanya 7 unit untuk satu tahun, memiliki harga per unit cukup tinggi yaitu sebesar Rp.1.326.520, (POLYTRON WASHING MACHINE PWM 7556) memiliki volume penjualan 21 unit harga Rp.1.275.800, (SONY HOME THEATER DAV-TZ140) memiliki volume penjualan 13 unit harga Rp.1.259. 091, Pada produk yang masuk kategori B. jumlah pemesanan yang dilakukan sekitar 1 kali dalam satu minggu, hal ini dilakukan untuk memastikan ketersediaan barang yang cukup ditoko, reorder barang sangat diperlukan dikarenakan pada saat stock barang ditoko sudah kurang maka perlu dilakukakn pemesanan kembali, perhitungan waktu kedatangan perlu dilakukan pada saat melakukan pemesanan sampai dengan penerimaan barang, hal ini bertujuan agar waktu yang diperlukan tidak terlalu lama yang berakibat kekosongan barang di toko. Kata Kunci : Pengendalian Persediaan, Metode ABC.

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5

Herminghaus, H. "The polytron as a cw electron accelerator in the 10 GeV range." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 305, no. 1 (July 1991): 1–9. http://dx.doi.org/10.1016/0168-9002(91)90511-n.

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6

Kuo, Tuan H., Filiberto Giacomelli, and Joseph Wiener. "Oxidative metabolism of Polytron versus Nagarse mitochondria in hearts of genetically diabetic mice." Biochimica et Biophysica Acta (BBA) - Bioenergetics 806, no. 1 (January 1985): 9–15. http://dx.doi.org/10.1016/0005-2728(85)90076-3.

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7

Solntsev, Victor A. "Possibility of amplification of microwaves using the negative conduction of an electron beam (polytron)." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 11, no. 2 (March 1993): 484. http://dx.doi.org/10.1116/1.586846.

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8

Bushway, Rodney J. "Determination of Methyl Nonyl Ketone by Liquid Chromatography." Journal of AOAC INTERNATIONAL 73, no. 5 (September 1, 1990): 743–44. http://dx.doi.org/10.1093/jaoac/73.5.743.

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Abstract A liquid chromatographic (LC) method has been developed to determine methyl nonyl ketone, a dog and cat repellent, In formulations. Corn cob formulations were extracted In acetonltrlle for 1 min using a Polytron mixer; liquid formulations were diluted with acetonitrile. A 10 juL aliquot was Injected Into a Vydac 218 TP54 column, monitored at 280 nm. The mobile phase was acetonitrlle-methanol-water-lsopropanol (225 + 200 + 50 + 25). Total analysis time was 5 min. Six different solid formulations and 5 different liquid formulations were analyzed 6 times with all percent coefficients of variation (% CV) below 4. Purity of each methyl nonyl ketone chromatographic peak was checked using a photodlode array detector In peak purity mode. No Interferences were observed at 280 nm.

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9

Bushway, Rodney J., L. Brian Perkins, and King M. Joan. "Simultaneous Determination of Diazinon and Chlorpyrifos Pesticide Formulations by Liquid Chromatography." Journal of AOAC INTERNATIONAL 71, no. 2 (March 1, 1988): 321–22. http://dx.doi.org/10.1093/jaoac/71.2.321.

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Abstract A liquid chromatographic (LC) method has been developed to analyze simultaneously separate formulations of diazinon and chlorpyrifos. Samples of each formulation were mixed in a Polytron mixer with the internal standard butylated hydroxytoluene and were diluted with acetonitrile. An aliquot was injected into an Ultremex LC column. The mobile phase was acetonitrile-water-tetrahydrofuran-glacial acetic acid-monoethanolamine (480 + 230 + 55 + 2 + 0.75); all 3 compounds were monitored at 230 nm. Total analysis time was 11 min. Combinations of 11 different samples of each formulated pesticide were analyzed 9 times for coefficients of variation generally less than 3%. Purity of the diazinon, chlorpyrifos, and butylated hydroxytoluene was checked by using a photodiode array detector in the spectrum and absorbance ratio modes. No interferences were noted at 230 nm.

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10

Wichman, M. D., R. C. Fry, and M. K. Hoffman. "Slurry Method for Rapid DCP Atomic Emission Determination of Residual Bone Fragments in Mechanically Separated Turkey." Applied Spectroscopy 40, no. 3 (March 1986): 351–55. http://dx.doi.org/10.1366/0003702864509312.

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A slurry atomization direct current plasma (DCP) emission method is reported which involves a minimum of sample preparation for the spectroscopic determination of residual bone solids (as calcium) in mechanically separated turkey. Lengthy wet-ashing methods have been replaced here by a simple approach involving a 2-min “Polytron” homogenization step followed by shaking of the meat homogenate for ∼10 s with dilute nitric acid at room temperature. The sample bulk remains as a suspension of solids that is immediately and directly pumped to a clog-free Babington-type nebulizer installed in a three-electrode DCP emission spectrometer for Ca determination. Before homogenizing, mechanically separated turkey (MST) normally contains bone fragments in the particle size range 0.1 to 0.8 mm. For these MST samples, quantitative Ca recoveries are achieved by the new matrix-modified slurry atomization DCP atomic emission method within about 10 min of the time the meat product is received for bone solids analysis by the lab.

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11

Nehra, N. S., K. K. Kartha, and C. Stushnoff. "Isozymes as markers for identification of tissue culture and greenhouse-grown strawberry cultivars." Canadian Journal of Plant Science 71, no. 4 (October 1, 1991): 1195–201. http://dx.doi.org/10.4141/cjps91-167.

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Polyacrylamide gel electrophoresis (PAGE) was used for analysis of isozyme banding patterns of leucine aminopeptidase (LAP), phosphoglucomutase (PGM), phosphoglucoisomerase (PGI), esterase (EST) and 6-phosphogluconate dehydrogenase (6-PGD) in strawberry leaves. The extracts prepared from young leaf tissues using polytron homogenization and an extraction buffer containing 15 mg ml−1 dithiothreitol (DTT) and 10% insoluble polyvinylpyrrolidone (PVP-6755) gave best resolution for these enzymes. The influence of plant age and various growing environments on the stability of isozyme phenotypes was examined. The isozyme banding patterns of 6-PGD were found to vary with the change in growing environment as well as age of the plants. EST produced different banding patterns in greenhouse and tissue culture leaves. However, the isozyme phenotypes of LAP, PGM and PGI remained stable under all the conditions tested. Using a combination of these three stable enzymes, it was possible to distinguish eight strawberry cultivars under both tissue culture and greenhouse conditions. Key words: Fragaria × ananassa Duch., meristem culture, polyacrylamide gel electrophoresis

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12

Purwanggono, Bambang, and Yohana Aeria Damyana. "Effect of internal R&D activities to the accumulation of organizational technical knowledge with the mediation role of absorptive capacity to establish the innovation capability of electronic industries." MATEC Web of Conferences 154 (2018): 01059. http://dx.doi.org/10.1051/matecconf/201815401059.

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Innovation is a strategy for the electronics industry to create a sustainable competitive advantage, in the midst of a rapidly changing environment with all its complexity. Seven AT program as an effort for PT. Hartono Istana Teknologi (Polytron) into enterprise knowledge, will accelerate the innovation process, combined with good organizational technical knowledge management. Organizational technical knowledge will be instrumental in innovation capabilities properly if there is an internal R & D activities that support and absorptive capacity as a mediator. This study reviewed the organizational technical knowledge influence to innovation capability, the influence of R & D activities to organizational technical knowledge, as well as the role of absorptive capacity as a mediator. The study was conducted by distributing questionnaires to 130 employees of PT. Hartono Istana Teknologi. Data processing was conducted using SEM. The results showed that the absorptive capacity mediate the relationship between R & D activities and organizational technical knowledge by 51%, and organizational technical knowledge affect innovation capabilities by 64%.

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13

BUSHWAY, RODNEY J., and ZHIHUA FAN. "Complementation of GC-AED and ELISA for the Determination of Diazinon and Chlorpyrifos in Fruits and Vegetables." Journal of Food Protection 61, no. 6 (June 1, 1998): 708–11. http://dx.doi.org/10.4315/0362-028x-61.6.708.

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Enzyme-linked immunosorbent assay (ELISA) was employed to screen produce samples for diazinon and chlorpyrifos levels. All positive samples were analyzed for these organophosphate insecticides with a newly developed gas chromatographic atomic emission detection (GC-AED) method. Produce was extracted in methanol by Polytron homogenization and cleaned up and concentrated using Sep-Pak C18 cartridges. Fortification and reproducibility studies were performed using apples, blueberries, green beans, lettuce, and tomatoes that were free of detectable levels diazinon and chlorpyrifos. Percent coefficient of variation (%CV) from the reproducibility studies ranged from 1.9 to 17 for chlorpyrifos and 1.9 to 11 for diazinon. Spiking studies demonstrated percent recoveries of 78 to 114% (%CV 3.1 to 13%) for diazinon and 82 to 123 (%CV 1.5 to 12) for chlorpyrifos. Of the 278 fruit and vegetable samples screened for both organophosphate insecticides, 59 were found to have detectable levels of diazinon and 35 samples were found to contain detectable amounts of chlorpyrifos. A correlation study between ELISA and GC-AED demonstrated that the correlation coefficient was 0.987 for diazinon and 0.967 for chlorpyrifos.

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14

Zhuang, Wenshan, Bruce McKague, Douglas Reeve, and John Carey. "A comparative evaluation of accelerated solvent extraction and Polytron extraction for quantification of lipids and extractable organochlorine in fish." Chemosphere 54, no. 4 (January 2004): 467–80. http://dx.doi.org/10.1016/j.chemosphere.2003.08.024.

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15

Norman, Andrew B., Michael T. Borchers, Thomas J. Wachendorf, Amy L. Price, and Paul R. Sanberg. "Loss of D1 and D2 dopamine receptors and muscarinic cholinergic receptors in rat brain following in vitro polytron homogenization." Brain Research Bulletin 22, no. 4 (April 1989): 633–36. http://dx.doi.org/10.1016/0361-9230(89)90082-8.

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16

Nugroho, Yuni Agung, and Untung Sugiarti. "PENINGKATAN DAYA SAING USAHA MIKRO PEMPEK IKAN DAN NABATI SAYURAN TROPIS DI KOTA MALANG." Jurnal Ilmiah Bisnis dan Ekonomi Asia 11, no. 2 (September 24, 2018): 86–91. http://dx.doi.org/10.32812/jibeka.v11i2.65.

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Community Development Activities (IbM) is designed to address the problems faced by partner companies. The implementation of IbM will be carried out by the following methods: a) Transfer of Application of Sanitation and Hygiene Standard to Pempek Production, c) Management training, financial management of production and marketing management, d) Monitoring and Evaluation. The results of IbM activities that have been done is the aid of mixing machine pempek dough dedicated to Partners 2, while for Part 1 in the form of fretrer polytron and vacum sealer. However, the pempping stirrer can be used, after the electric power of partner 2 plus the power to 1300 watts. Mitra 1 (Pempek Maliana) is more open and creative in developing pempek products, while partner 2 (Pempek Sulfat 28) still adheres to pempek that already exist in Malang with the same appearance and hard. Assistance and counseling to open insight and add skills have been done but at Partner 2 is still not able to adopt it. Partner 1 is already more advanced in terms of innovation and creativity in products and marketing.Keywords: competitiveness, micro business, pempek, tropical vegetables

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17

Bushway, Rodney J., Lei Li, Lance R. Paradis, and Lewis B. Perkins. "Determination of Thiabendazole in Potatoes, Fruits, and Their Processed Products by Liquid Chromatography." Journal of AOAC INTERNATIONAL 78, no. 3 (May 1, 1995): 815–20. http://dx.doi.org/10.1093/jaoac/78.3.815.

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Abstract A liquid chromatographic method has been developed for analysis of the fungicide thiabendazole (TBZ) in fruits, potatoes, and their processed products. Extraction was performed in a 50 mL polyethylene conical centrifuge tube with a basic solution. TBZ was partitioned (into methylene chloride with a polytron. No further cleanup was needed. Separation was carried out on a 5 μm Ultracarb 30 ODS column with fluorescent detection, excitation at 305 nm and emission at 345 nm. Total analysis time including extraction was 25 min per sample. Recoveries ranged from 77 to 135%. Average percent recovery for all sample types spiked from 5 ppb to 387 ppm was 94% with a coefficient of variation (CV) of 11%. Overall intra-assay CVs varied from 1.8 to 23%, and interassay CVs ranged from 1.8 to 15%. Of 194 commercial samples analyzed for TBZ, 129 were positive. TBZ in positive samples ranged from 1.1 ppb to 72.5 ppm. The limit of quantitation varied from 2.5 ppb for juices, 2.5 ppb for fruits and potatoes, and 4.5 ppb for bulk concentrates. Detection limits were 1.0 ppb for juice, fruits, and potatoes and 2 ppb for bulk concentrates. TBZ levels in the positive samples were corroborated by immunoassay.

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18

Trucksess, Mary W., Vickery A. Brewer, Kristina M. Williams, Carmen D. Westphal, and James T. Heeres. "Preparation of Peanut Butter Suspension for Determination of Peanuts Using Enzyme-Linked Immunoassay Kits." Journal of AOAC INTERNATIONAL 87, no. 2 (March 1, 2004): 424–28. http://dx.doi.org/10.1093/jaoac/87.2.424.

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Abstract Peanuts are one of the 8 most common allergenic foods and a large proportion of peanut-allergic individuals have severe reactions, some to minimal exposure. Specific protein constituents in the peanuts are the cause of the allergic reactions in sensitized individuals who ingest the peanuts. To avoid accidental ingestion of peanut-contaminated food, methods of analysis for the determination of the allergenic proteins in foods are important tools. Such methods could help identify foods inadvertently contaminated with peanuts, thereby reducing the incidence of allergic reactions to peanuts. Commercial immunoassay kits are available but need study for method performance, which requires reference materials for within- and between-laboratory validations. In this study, National Institute of Standards and Technology Standard Reference Material 2387 peanut butter was used. A polytron homogenizer was used to prepare a homogenous aqueous Peanut Butter suspension for the evaluation of method performance of some commercially available immunoassay kits such as Veratox for Peanut Allergen Test (Neogen Corp.), Ridascreen Peanut (R-Biopharm GmbH), and Bio-Kit Peanut Protein Assay Kit (Tepnel). Each gram of the aqueous peanut butter suspension contained 20 mg carboxymethylcellulose sodium salt, 643 μg peanut, 0.5 mg thimerosal, and 2.5 mg bovine serum albumin. The suspension was homogenous, stable, reproducible, and applicable for adding to ice cream, cookies, breakfast cereals, and chocolate for recovery studies at spike levels ranging from 12 to 90 μg/g.

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19

Darwish, G. S., F. R. van de Voort, and J. P. Smith. "Proximate Analysis of Fish Tissue by Mid-Infrared Transmission Spectroscopy." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 4 (April 1, 1989): 644–49. http://dx.doi.org/10.1139/f89-082.

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Mid-infrared spectroscopy was assessed as a means for rapidly determining the fat, protein, and moisture content of fish tissues. For fat and protein, a sample preparation protocol was developed for the conversion of fish tissue into a milk-like emulsion for analysis by a Multispec MK I infrared milk analyser. Fish (cod, tuna, and mackerel) were minced, dissolved, and emulsified in 0.2 M NaOH using a polytron and analysed for fat and protein using the conventional fat and protein wavelengths used for milk analysis. Instrument calibration for fat and protein was based on the Mojonnier and Kjeldahl procedures, respectively. Moisture was determined separately by extracting the water from the minced tissue using absolute methanol and measuring the absorbance of the resulting solution using a 5.56/6.02-μm filter pair. The instrument was calibrated using standardized water–methanol mixtures and the results compared with the standard vacuum oven method. Rapid analyses of fat and protein were possible giving individual results to within 1% of the standard chemical determinations. Moisture analysis, also worked well, being more accurate and rapid than the vacuum oven procedure. The limiting factor in its use for proximate analysis appears to be a combination of sample compositional variation and/or the general reproducibility of the standard methods. We conclude that the analysis of fish by mid-infrared transmission spectroscopy could serve as a means of rapidly carrying out the proximate analysis of fish and fish products for quality control purposes.

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20

Tariq, Asma, Rana Muhammad Mateen, Iram Fatima, and Muhammad Waheed Akhtar. "Calreticulin is Differentially Expressed in Invasive Ductal Carcinoma: A Comparative Study." Current Proteomics 16, no. 2 (January 4, 2019): 148–55. http://dx.doi.org/10.2174/1570164615666180907154459.

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Objective: The aim of the present study was to build protein profiles of untreated breast cancer patients of invasive ductal carcinoma grade II at tissue level in Pakistani population and to compare 2-D profiles of breast tumor tissues with matched normal tissues in order to evaluate for variations of proteins among them. Materials & Methods: Breast tissue profiles were made after polytron tissue lysis and rehydrated proteins were further characterized by using two-dimensional gel electrophoresis. On the basis of isoelectric point (pI) and molecular weight, proteins were identified by online tool named Siena 2-D database and their identification was further confirmed by using MALDI-TOF. Results: Among identified spots, 10 proteins were found to be differentially expressed i.e.; COX5A, THIO, TCTP, HPT, SODC, PPIA, calreticulin (CRT), HBB, albumin and serotransferrin. For further investigation, CRT was selected. The level of CRT in tumors was found to be significantly higher than in normal group (p < 0.05). The increased expression of CRT level in tumor was statistically significant (p = 0.010) at a 95% confidence level (p < 0.05) as analyzed by Mann-Whitney. CRT was found distinctly expressed in high amount in tumor tissue as compared to their matched normal tissues. Conclusion: It has been concluded that CRT expression could discriminate between normal tissue and tumor tissue so it might serve as a possible candidate for future studies in cancer diagnostic markers.

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21

Parrinder, R., P. J. Buttery, J. M. Dawson, C. D. Wood, and M. Gill. "The effects of low molecular weight phenolics in the ruminant gut metabolism." Proceedings of the British Society of Animal Production (1972) 1993 (March 1993): 182. http://dx.doi.org/10.1017/s0308229600025046.

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Polyphenolics are a common group of anti-nutritional factors, which occur in many browse plants found in the tropics. They have been implicated in the poor performance of ruminants. Detrimental effects could occur in the rumen or, if phenolics or their metabolites escape degradation, in the intestines or animal tissues. Most published reports have concentrated on examining the effect of feeding plant material containing anti-nutritional factors or the effects of administration of plant extracts containing a mixture of possible anti-nutritional compounds. We have adopted an alternative approach by investigating the metabolism of individual phenolic compounds rather than broad groups. For our initial studies the flavonol glycoside rutin (a monomeric unit of many condensed tannins) and gallic acid (monomeric unit of many hydrolysable tannins) were chosen as models to study the fate of these compounds in the rumen environment.All samples were analysed for phenolics by HPLC (Spectra Physics Focus System) using a diode-array detector (220-900nm) and a 250 × 4mm column packed with ODS Hypersil, CIS. Samples run on this system were eluted with a linear gradient of 2% glacial acetic acid(A) and methanol(B), 100% A - 100% B in 30-60 min, the gradient run time depending on the type of sample being analysed. Sample peaks were identified using their retention time, maximum absorbances and peak spectra relative to known phenolic standards. All samples containing phenolics were extracted in 100% methanol by homogenization (Polytron AG Kinematic, Switzerland) at 13,500 rpm for 2 × 90 sec. The homogenate was then centrifuged at 1·000g for 10 min. The resulting supernatant was analysed for phenolics by HPLC.

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22

García-Ramos, F. Javier, A. Javier Aguirre, Pilar Barreiro, Esperanza Horcas, Antonio Boné, and Mariano Vidal. "Applicability of Ammonia Sensors for Controlling Environmental Parameters in Accommodations for Lamb Fattening." Journal of Sensors 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/4032043.

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Electrochemical ammonia sensors were used to analyse the existing relationship between the ammonia concentration and ambient levels of both temperature and relative humidity in commercial lamb fattening housing equipped with mechanical ventilation and straw-bedded pens. In the first stage of the experiment, sensors were placed over straw beds covered in lamb urine and analysed under laboratory conditions in order to determine ammonia emission evolution over time; three control temperatures (25, 35, and 50°C) were used. A HOBO H8 temperature and relative humidity logger and a Dräger NH3LC-6809680 electrochemical ammonia sensor placed in a Dräger Polytron 7000 gas detector were utilized as sensors. A positive correlation was established between both ammonia emission time and emitted amount with temperature. Additionally, tests were performed in a commercial lamb housing to determine ammonia concentration variation with respect to height from the ground; three ammonia sensors placed at 50, 90, and 135 cm above the ground were used simultaneously. The ammonia concentration significantly decreased as height increased. A 90 cm height was selected, and three ammonia probes were placed in three different pens inside the livestock housing, along with temperature and relative humidity sensors; four different housing ventilation rates were then tested under real conditions over a time period of 4 months. An adjustment polynomial equation between the housing ambient temperature and the ammonia concentration was obtained with R2 = 0.632. In conclusion, a relationship can be established between temperature and ammonia concentration in commercial lamb housing under certain handling conditions, which in turn allows for estimating the ammonia concentration adequately based on the ambient internal temperature.

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23

Saxby, Charlotte, and John R. Samples. "Polytrim." Journal of Toxicology: Cutaneous and Ocular Toxicology 10, no. 4 (January 1991): 249–52. http://dx.doi.org/10.3109/15569529109052134.

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24

Dziedzic, Andrzej, and Jan Felba. "Polytronic 2005." Microelectronics Reliability 47, no. 2-3 (February 2007): 327. http://dx.doi.org/10.1016/j.microrel.2006.03.001.

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25

Morris, J. E. "Foreword Polytronic Special Section." IEEE Transactions on Electronics Packaging Manufacturing 28, no. 4 (October 2005): 289–90. http://dx.doi.org/10.1109/tepm.2005.859770.

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Morris, J. E. "Foreword Polytronic Special Section." IEEE Transactions on Components and Packaging Technologies 28, no. 4 (December 2005): 741. http://dx.doi.org/10.1109/tcapt.2005.859661.

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27

Nirmalakhandan, N., J. Peace, E. Egemen, M. Mohsin, B. Sun, and E. Hall. "Estimating toxicity of mixtures of organic chemicals to activated sludge using surrogate test cultures." Water Science and Technology 34, no. 7-8 (October 1, 1996): 87–92. http://dx.doi.org/10.2166/wst.1996.0605.

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The feasibility of estimating toxicity of synthetic organic chemicals to activated sludge using surrogate test cultures was evaluated. The commercial culture, Polytox, evaluated in this study yielded consistently reproducible results. Experimentally determined IC50 values for 50 chemicals for Polytox cultures correlated well with activated sludge with r2 = 0.922. Similar agreement was found between IC50 values reported in the literature and those measured for Polytox (r2 = 0.762). Additional comparisons were made between activated sludge and Polytox based on joint toxicity of mixtures of organic chemicals. Excellent correlations were found between the concentrations of the constituents in 8- and 10-component mixtures that jointly caused 50% inhibition of the two microorganisms.

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Toroitich, F. J., M. Knapp, J. H. Nderitu, F. M. Olubayo, and M. Obonyo. "Susceptibility of geographically isolated populations of the Tomato red spider mite (Tetranychus evansi Baker & Pritchard) to commonly used acaricides on tomato crops in Kenya." Journal of Entomological and Acarological Research 46, no. 1 (April 14, 2014): 18. http://dx.doi.org/10.4081/jear.2014.1469.

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Farmers in Kenya continue to raise concerns of difficulty in managing Tetranychus evansi, the most widespread pest species of tomato applying the most commonly used acaricides. This invasive pest species is not only found in Kenya, but in Eastern and Southern Africa, as well as parts of Europe and Asia. In the current study, populations of T. evansi were collected from farms in the four major tomato-growing areas of Kenya (Loitoktok, Kibwezi, Athi-River and Subukia) and their susceptibility compared to a laboratory culture (ICIPE) that had been maintained for three years without exposure to acaricides. Susceptibility of T. evansi eggs and adults (contact and residual) to Brigade (bifenthrin), Dimethoate (dimethoate), Karate (lambdacyhalothrin), Kelthane (dicofol), Omite (propargite) and Polytrin (profenofos+ cypermethrin) was tested in the laboratory using respective manufacturer’s recommended concentrations. Dimethoate resulted in variable ovicidal mortality while Kelthane, Brigade, Karate, Omite and Polytrin had high mortality across all populations. Similarly, adult contact and residual mortality was lower than that of the other chemicals when exposed to Dimethoate regardless of the location. Furthermore, it also had no residual effect on the mites from ICIPE and Kibwezi. On the other hand, Kelthane was most lethal against the mites from all locations followed by Brigade and Polytrin in that order. Omite caused significantly lower mortality on mites from Subukia while Karate produced variable effects on mites from Kibwezi, Loitoktok and Subukia. The implications of these findings are further discussed.

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Vavrukh, M. V., and D. V. Dzikovskyi. "Method of integral equations in the polytropic theory of stars with axial rotation. I. Polytropes n=0 and n=1." Mathematical Modeling and Computing 8, no. 2 (2021): 338–58. http://dx.doi.org/10.23939/mmc2021.02.338.

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Calculations of characteristics of stars with axial rotation in the frame of polytropic model are based on the solution of mechanical equilibrium equation – differential equation of second order in partial derivatives. Different variants of approximate determinations of integration constants are based on traditional in the theory of stellar surface approximation, namely continuity of gravitational potential in the surface vicinity. We proposed a new approach, in which we used simultaneously differential and integral forms of equilibrium equations. This is a closed system and allows us to define in self-consistent way integration constants, the polytrope surface shape and distribution of matter over volume of a star. With the examples of polytropes n=0 and n=1, we established the existence of two rotation modes (with small and large eccentricities). It is proved that the polytrope surface is the surface of homogeneous rotational ellipsoid for the case n=0. The polytrope characteristics with n=1 in different approximations were calculated as the functions of angular velocity. For the first time it has been calculated the deviation of polytrope surface at fixed value of angular velocity from the surface of associated rotational ellipsoid.

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Krut, Sébastien, Olivier Company, and François Pierrot. "Velocity performance indices for parallel mechanisms with actuation redundancy." Robotica 22, no. 2 (March 2004): 129–39. http://dx.doi.org/10.1017/s0263574703005411.

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This paper analyses the concept of velocity isotropy for Parallel Mechanisms with Actuation Redundancy (PMAR). The limits of classical indices based on the Jacobean matrix condition number are shown. It is proposed to use either the largest ellipsoid included in the operational polytop, or the operational polytop itself, as better representations of a PMAR capabilities. The polytop is studied because it is actually the accurate representation of a machine capability, while the largest ellipsoid remains similar to the classical tool roboticists are dealing with for decades. Velocity performance indices are proposed, and the ways to compute them efficiently are given.

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Albera, Dionigi. "Digressions on Polytropy: An Exploration of Religious Eclecticism in Eurasia." Entangled Religions 9 (April 30, 2019): 139–64. http://dx.doi.org/10.46586/er.v9.2019.139-164.

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The anthropologist Michael Carrithers introduced the notion of polytropy in the field of the study of religion, proposing that this notion (deriving from the Greek poly, ‘many’, and tropos, ‘turning’) may account for the eclecticism and fluidity of South Asian religious life. The exploration effectuated in the article suggests that the notion of polytropy could offer a promising tool for capturing some important features of religiosity in other Asiatic contexts, too, as well as in the Mediterranean. Polytropic trends appear in different religious contexts, from the fuzzy Chinese situation, where religious affiliations are very limited in their scope and relevance, to the South Asian contexts, in which religious orientations coalesce around the multivocal concept of dharma, to the tightly structured Abrahamic religions in the Mediterranean with their strong confessionalism. Polytropy is associated with a practical mode of religiosity and is linked to a particular conception of believing in which the believer tends to multiply the transactions with different supra-mundane partners. This orientation is distinct from religious styles that are based on a discursive and scriptural approach and/or on the cultivation of oneself, which often display a tendency towards unity, coherence and continuity. This permits identifying an opposite pole with respect to polytropy, which I define as monotropy.

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Reppich, Marcus, Robert Pietzsch, and Josef Kohoutek. "Ein modifizierter Polytop-Algorithmus." Chemie Ingenieur Technik 64, no. 4 (April 1992): 386–87. http://dx.doi.org/10.1002/cite.330640427.

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Qasim, M., and D. Hussian. "Efficacy of Insecticides Against Citrus Psylla (Diaphorina Citri Kuwayama) in Field and Laboratory Conditions." Cercetari Agronomice in Moldova 48, no. 2 (June 1, 2015): 91–97. http://dx.doi.org/10.1515/cerce-2015-0033.

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Abstract The experiments were conducted in a citrus orchard to check the efficacy of insecticides against citrus psylla, and mortality was observed after three days, seven days and then after one month. Four insecticides, Polytrin-C, Talstar, Bifenthrin and Imidacloprid applied, had an almost equal effect on the population reduction of citrus psylla on all citrus plants. The trial was laid out in randomized complete block design (RCBD) having five treatments with three replications in a citrus orchard, after three days of spray showed percentage control as 96.91%, 94.33%, 93.83% and 93.06% of following insecticides Polytrin- C, Imidacloprid, Bifenthrin and Actara, respectively, calculated by Minitab 15. Psylla adults were exposed to different concentrations (500, 400, 300, 200 and 100 ppm) of Imidacloprid and Bifenthrin, and two controlled conditions (with leaves and without leaves). Both Imidacloprid and Bifenthrin insecticides proved to be the most effective against D. citri with lethal times (LT50s) of 4 and 5 hours, respectively, at a concentration of 500 ppm, calculated from probability test with Minitab-15

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Creemers, H. M. J. C., and J. G. Noltes. "Preparation of polytin monohydrides and their use in the synthesis of polytin compounds." Recueil des Travaux Chimiques des Pays-Bas 84, no. 3 (September 2, 2010): 382–84. http://dx.doi.org/10.1002/recl.19650840313.

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Rucinski, S. M. "Rotational properties of composite polytrope models." Astronomical Journal 95 (June 1988): 1895. http://dx.doi.org/10.1086/114784.

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Williams, P. S. "Analytical solutions for the rotating polytrope." Astrophysics and Space Science 143, no. 2 (1988): 349–58. http://dx.doi.org/10.1007/bf00637146.

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Walker, M., R. S. Lo, and S. F. Cheng. "Hidden line detection in polytree representations." Computer-Aided Design 20, no. 7 (September 1988): 424. http://dx.doi.org/10.1016/0010-4485(88)90242-4.

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Walker, Marshall, Reng Song Lo, and S. F. Cheng. "Hidden line detection in polytree representations." Computers & Graphics 12, no. 1 (January 1988): 65–69. http://dx.doi.org/10.1016/0097-8493(88)90009-x.

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Blanche, Timothy J., Martin A. Spacek, Jamille F. Hetke, and Nicholas V. Swindale. "Polytrodes: High-Density Silicon Electrode Arrays for Large-Scale Multiunit Recording." Journal of Neurophysiology 93, no. 5 (May 2005): 2987–3000. http://dx.doi.org/10.1152/jn.01023.2004.

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We developed a variety of 54-channel high-density silicon electrode arrays (polytrodes) designed to record from large numbers of neurons spanning millimeters of brain. In cat visual cortex, it was possible to make simultaneous recordings from >100 well-isolated neurons. Using standard clustering methods, polytrodes provide a quality of single-unit isolation that surpasses that attainable with tetrodes. Guidelines for successful in vivo recording and precise electrode positioning are described. We also describe a high-bandwidth continuous data-acquisition system designed specifically for polytrodes and an automated impedance meter for testing polytrode site integrity. Despite having smaller interconnect pitches than earlier silicon-based electrodes of this type, these polytrodes have negligible channel crosstalk, comparable reliability, and low site impedances and are capable of making high-fidelity multiunit recordings with minimal tissue damage. The relatively benign nature of planar electrode arrays is evident both histologically and in experiments where the polytrode was repeatedly advanced and retracted hundreds of microns over periods of many hours. It was possible to maintain stable recordings from active neurons adjacent to the polytrode without change in their absolute positions, neurophysiological or receptive field properties.

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Shaw, Joseph W. "TRACING THE ANCESTRY OF THE MINOAN HALL SYSTEM." Annual of the British School at Athens 106 (November 2011): 141–65. http://dx.doi.org/10.1017/s0068245411000049.

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Among the more intriguing Minoan architectural forms is the so-called ‘Minoan Hall’. It consists, at its simplest, of a light well, a fore hall, and a room (polythyron) closed off by what are known as pier-and-door partitions. The Hall was located in the residential areas of the palaces, also in some Neopalatial houses, and was usually accompanied by a ‘lustral basin’, a square sunken room reached by steps often flanked by an elaborate balustrade. A window or a platform often enabled observation within the basin from ground level.Examples of the Hall were once known only from the Neopalatial period, but two earlier, Protopalatial, examples have been identified at Malia. The later of the two occurs in Middle Minoan II Building A in Quartier Mu. It consists of the lustral basin, a large hall with a light well, and a polythyron. The earlier example, a Minoan Hall suite in the Middle Minoan I Crypte hypostyle, consists of a unique series of five basement rooms, the first bordered by a light well, then a polythyron, followed by a relatively small, square room with a large interior window (a lustral basin?), with a benched entrance room next door. South of these rooms was a large hall at ground level, probably for groups, from which one accessed separately the first and last of the rooms underground.Comparison of the two room groups suggests that the Crypte hypostyle example is the forerunner of the Quartier Mu group. Specifically, the latter's polythyron was, for practical reasons, set at ground level while its lustral basin, which involved chthonic connections, remained at basement level and was approached by steps. The same arrangement, but with some adjustments, was to be adapted later, in Neopalatial times, completing a long history of a social and ceremonial architectural form that may have begun as early as the Early Minoan Period.

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Ivakhiv, Adrian. "Image Ecologies, Spiritual Polytropy, and the Anthropocene." Journal for the Study of Religion, Nature and Culture 13, no. 4 (November 5, 2019): 479–509. http://dx.doi.org/10.1558/jsrnc.39183.

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Roxburgh, I. W., and L. M. Stockman. "Power series solutions of the polytrope equations." Monthly Notices of the Royal Astronomical Society 303, no. 3 (March 1, 1999): 466–70. http://dx.doi.org/10.1046/j.1365-8711.1999.02219.x.

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Beech, Martin. "An approximate solution for the polytropen=3." Astrophysics and Space Science 132, no. 2 (April 1987): 393–96. http://dx.doi.org/10.1007/bf00641767.

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DE CAMPOS, LUIS M., JUAN M. FERNÁNDEZ-LUNA, and JUAN F. HUETE. "IMPROVING THE EFFICIENCY OF THE BAYESIAN NETWORK RETRIEVAL MODEL BY REDUCING RELATIONSHIPS BETWEEN TERMS." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 11, supp01 (September 2003): 101–16. http://dx.doi.org/10.1142/s0218488503002296.

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The Bayesian Network Retrieval Model is able to represent the main (in)dependence relationships between the terms from a document collection by means of a specific type of Bayesian network, namely a polytree. However, although the learning and propagation algorithms designed for this topology are very efficient, in collections with a very large number of terms, these two tasks might be very time-consuming. This paper shows how by reducing the size of the polytree, which will only comprise one subset of terms which are selected according to their retrieval quality, the performance of the model is maintained, whereas the efforts needed to learn and later propagate in the model are considerably reduced. A method for selecting the best terms, based on their inverse document frequency and term discrimination value, is also presented.

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Anandaram, M. N. "Emden’s Polytropes: Gas Globes In Hydrostatic Equilibrium." Mapana - Journal of Sciences 12, no. 1 (February 20, 2013): 99–127. http://dx.doi.org/10.12723/mjs.24.9.

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The theory of polytropes dealing with the hydrostatic equilibrium structure of gas globes had its origin in Emden’s publication, Gaskugeln a century ago (1907). This review article has been written for students of physics and astrophysics not only to understand the theory of polytropes as the simplest of stellar models but also computationally solve the Lane-Emden equation for polytropes. Anyone can easily obtain values of normalized temperature, density, pressure and mass distribution as a function of the normalized radius or mass in any polytrope model in tabular form as well as in graphical form using the program code. Explanation of the algorithm to write a code is provided (python script on request). A graphical description of how the polytropic index determines the structure of the polytrope is also given.

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Silva, R., and J. S. Alcaniz. "Non-extensive statistics and the stellar polytrope index." Physica A: Statistical Mechanics and its Applications 341 (October 2004): 208–14. http://dx.doi.org/10.1016/j.physa.2004.02.070.

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Raveh, Adi, and Gur Mosheiov. "Smoothing time-series data by nonmetric polytone curves." Communications in Statistics - Simulation and Computation 17, no. 2 (January 1988): 515–36. http://dx.doi.org/10.1080/03610918808812677.

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Abellán, G., E. Fuenmayor, and L. Herrera. "The double polytrope for anisotropic matter: Newtonian case." Physics of the Dark Universe 28 (May 2020): 100549. http://dx.doi.org/10.1016/j.dark.2020.100549.

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Abellán, G., E. Fuenmayor, E. Contreras, and L. Herrera. "The general relativistic double polytrope for anisotropic matter." Physics of the Dark Universe 30 (December 2020): 100632. http://dx.doi.org/10.1016/j.dark.2020.100632.

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Curry, Charles L., and Christopher F. McKee. "Composite Polytrope Models of Molecular Clouds. I. Theory." Astrophysical Journal 528, no. 2 (January 10, 2000): 734–55. http://dx.doi.org/10.1086/308212.

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Journal articles on the topic 'Polytron'

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