3,336 research outputs found

    Pengaruh Karakteristik Demografis dan Gaya Hidup terhadap Niat Beli di Starbucks

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    Gaya hidup konsumen merupakan sa- saran penting yang harus dipertimbangkan oleh produsen. Hal ini dikarenakan gaya hidup mencakup pola hidup kon- sumen yang melibatkan pemilihan produk dan gaya konsumsi sehari-hari konsumen tersebut. Selain gaya hidup, karakteristik demografik juga akan mempengaruhi niat beli. Dalam penelitian ini akan diteliti pengaruh dari gaya hidup dan karakteristik demografik terhadap niat beli konsumen Starbucks. Penelitian dilakukan pada 100 orang responden. Data yang diperoleh diolah menggunakan me- tode regresi linier berganda. Hasil yang diperoleh menun- jukkan bahwa baik gaya hidup maupun karakteristik de- mografik berpengaruh terhadap niat beli konsumen

    In situ XRF and gamma ray spectrometer for Mars sample return mission

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    A combined in situ X-ray fluorescence (XRF) and passive gamma ray spectrometer instrument is proposed for the chemical elemental analysis of various Martian surfaces and samples. The combined instrument can be carried on board a rover. The passive gamma ray or the neutron excited gamma ray system would be used to determine the elemental composition of the Martian surface while the rover is in motion. The XRF system would be used to perform analysis either on the Martian surface or on collected samples when the rover is stationary. The latter function is important both in cataloging the collected samples and in the selection of samples to be returned to earth. For both systems, data accumulation time would be on the order of 30 minutes. No sample preparation would be necessary

    Analysis of Odor‐Causing VOCs and Semi‐VOCs Associated with Particulate Matter in Swine Barns Using SPME‐GC‐MS‐Olfactometry

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    Swine operations can affect air quality by emissions of odor, volatile organic compounds (VOCs) and other gases, and particulate matter (PM). Particulate matter has been proposed to be an important pathway for carrying odor. However, little is known about the odor‐VOCs‐PM interactions. In this research, continuous PM sampling was conducted simultaneously with three collocated TEOM analyzers inside a 1000‐head swine finish barn located in central Iowa. Each TEOM (tapered element oscillating microbalance) was fitted with total suspended particulate (TSP), PM‐10, PM‐2.5 and PM‐1 preseparators. Used filters were stored in 40 mL vials and transported to the laboratory. VOCs adsorbed∕absorbed to dust were allowed to equilibrate with vial headspace. Solid‐phase microextraction (SPME) Carboxen∕polydimethylsiloxane(PDMS) 85 Όm fibers were used to extract VOCs. Simultaneous chemical and olfactometry analyses of VOCs and odor associated with swine PM were completed using a gas chromatography‐mass‐olfactometry (GC‐MS‐O) system. Fifty VOCs categorized into nine chemical function groups were identified and confirmed with standards. Five of them are classified as hazardous air pollutants. VOCs were characterized with a wide range of molecular weight, boiling points, vapor pressures, water solubilities, odor detection thresholds, and atmospheric reactivities. All characteristic swine VOCs and odorants were present in PM and their abundance was proportional to PM size. However, the majority of VOCs and characteristic swine odorants were preferentially bound to smaller‐size PM. The findings indicate that a significant fraction of swine odor can be carried by PM. Research of the effects of PM control on swine odor mitigation is warranted

    Characterization of Volatile Organic Compounds and Odorants Associated with Swine Barn Particulate Matter Using Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry-Olfactometry

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    dor, volatile organic compounds (VOCs) and other gases, and particulate matter (PM). Particulate matter has been proposed to be an important pathway for carrying odor. In this research, continuous PM sampling was conducted simultaneously with three collocated TEOM (tapered element oscicllating microbalance) analyzers inside a 1000- head swine finish barn located in central Iowa. Each TEOM was fitted with total suspended particulate (TSP), PM-10, PM-2.5 and PM-1 preseparators. Used filters were stored in 40 mL vials and transported to the laboratory. Carboxen/polydimethylsiloxane (PDMS) 85 ÎŒm solid phase microextraction (SPME) fibers were used to extract VOCs. Simultaneous chemical and olfactometry analyses of VOCs and odor associated with swine PM were completed using a gas chromatography-mass spectrometer-olfactometry (GCMS-O) system. Fifty VOCs categorized into nine chemical function groups were identified and confirmed with standards. Five of them are classified as hazardous air pollutants. VOCs were characterized with a wide range of molecular weight, boiling points, vapor pressures, water solubilities, odor detection thresholds, and atmospheric reactivities. All characteristic swine VOCs and odorants were present in PM and their abundance was proportional to PM size. However, the majority of VOCs and characteristic swine odorants were preferentially bound to smaller-size PM. The findings indicate that a significant fraction of swine odor can be carried by PM

    Radiation-associated angiosarcoma after autologous breast reconstruction: report of two cases in a plastic surgery unit

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    Radiation-associated breast angiosarcoma is a rare diagnosis but is commonly reported. Angiosarcoma occurring in non-breast tissue in breasts that have been reconstructed with autologous tissue following mastectomy is extremely rare. In our unit, we have managed two patients with angiosarcoma arising in non-breast tissue autologous reconstructions. Our report emphasises that any tissue treated with radiotherapy—that is, the residual mastectomy skin flaps or non-breast tissue autologous reconstructions—are at a risk of secondary angiosarcoma. We also discuss recommended surgical management, surveillance and genetic testing. Level of Evidence is V, risk study

    Financial rogue waves

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    The financial rogue waves are reported analytically in the nonlinear option pricing model due to Ivancevic, which is nonlinear wave alternative of the Black-Scholes model. These solutions may be used to describe the possible physical mechanisms for rogue wave phenomenon in financial markets and related fields.Comment: 4 papges, 2 figures, Final version accepted in Commun. Theor. Phys., 201
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