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Artículos de revistas sobre el tema "Ambient envelop-"

Autor: Grafiati
Publicado: 25 de mayo de 2024
Última modificación: 31 de julio de 2025

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1

Takao Katsura, Tomoya Ohara, Taichi Kamada, Katsunori Nagano, and Saim Memon. "Analysis of indoor environment and insulation performance of residential house with double envelope vacuum insulation panels." International Journal of Solar Thermal Vacuum Engineering 3, no. 1 (2021): 15–28. http://dx.doi.org/10.37934/stve.3.1.1528.

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Double envelope vacuum insulation panels (VIPs) have a possibility to significantly increase the service lifetime. In this paper, double envelope VIPs were produced and installed in the residential house. The performance of installed VIPs was evaluated by using the measuring data of heat flux meter. In addition, the total energy, the heating load and the indoor thermal environment of this house were measured and analysed. The average heating load and the average temperature difference between room temperature and ambient air temperature on the representative day was 2.49 kW and 29.9 oC, respec
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2

Ndukwu, Macmanus Chinenye, Merlin Simo-Tagne, Ifiok Edem Ekop, et al. "Energy in buildings: A review of models on hygrothermal transfer through the porous materials for building envelop." Future Technology 2, no. 4 (2023): 33–44. http://dx.doi.org/10.55670/fpll.futech.2.4.4.

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The hygrothermal transfer is very important for the design of a building envelope for thermal comfort, economic and energy analysis of the building envelope. The lack of reference materials on models of moisture and temperature behavior in the building, including wooden walls, is a challenge. This paper reviewed the hygrothermal transfer models for building walls. Energy and mass conservation equations with boundary and input conditions were presented in this paper for concrete, bricks, and wooden walls. The review showed the presence of mainly physical-based models, while there is a dearth of
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3

Yan, Gongxing, Bin Teng, Azher M. Abed, et al. "Computational fluid dynamics simulation of a designed envelop contenting phase change material and imposed solar heat flux and ambient air." Journal of Energy Storage 58 (February 2023): 106184. http://dx.doi.org/10.1016/j.est.2022.106184.

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4

Ayache, Ahmed, and Othman Echi. "The envelope of a subcategory in topology and group theory." International Journal of Mathematics and Mathematical Sciences 2005, no. 21 (2005): 3387–404. http://dx.doi.org/10.1155/ijmms.2005.3387.

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A collection of results are presented which are loosely centered around the notion of reflective subcategory. For example, it is shown that reflective subcategories are orthogonality classes, that the morphisms orthogonal to a reflective subcategory are precisely the morphisms inverted under the reflector, and that each subcategory has a largest “envelope” in the ambient category in which it is reflective. Moreover, known results concerning the envelopes of the category of sober spaces, spectral spaces, and jacspectral spaces, respectively, are summarized and reproved. Finally, attention is fo
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5

Kanoria, Akshay A., and Rajkumar S. Pant. "Winged Aerostat Systems for Better Station Keeping for Aerial Surveillance." Advanced Materials Research 433-440 (January 2012): 6871–79. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6871.

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An aerostat is a tethered balloon with an aerodynamically shaped envelope containing a lighter-than-air gas that generates bulk of the lifting force. Aerostats are used extensively as an aerial platform for many scientific and commercial applications. Conventional aerostats envelopes have an ellipsoidal shape, due to which they suffer from a large amount of horizontal displacement (called blowby) due to the ambient winds. If the drag force acting on aerostat is high, the resulting blowbyis higher and a longer tether is required to maintain the specified operating altitude; this results in lowe
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6

Kubullek, M., Z. Wang, K. von der Brelje, et al. "Single-shot carrier–envelope-phase measurement in ambient air." Optica 7, no. 1 (2020): 35. http://dx.doi.org/10.1364/optica.7.000035.

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7

Toure, Pape Moussa, Younouss Dieye, Prince Momar Gueye, Mactar Faye, and Vincent Sambou. "Influence of envelope thickness and solar absorptivity of a test cell on time lag and decrement factor." Journal of Building Physics 43, no. 4 (2019): 338–50. http://dx.doi.org/10.1177/1744259119863446.

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This work deals with the influence of envelope thickness and solar absorption on the time lag and the decrement factor. For this, a test cell of 1 m3 of volume is built with a material commonly used in construction in Senegal, the compressed earth brick stabilized with cement. The ambient-air temperature inside and outside of test cell and solar direct normal irradiance is measured. The test cell is modeled using EnergyPlus software. The comparison of experimental and theoretical ambient-air temperature puts out a great linear showing the reliability of the model. The time lag and the decremen
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8

Furduev, A. V. "The two domains in envelope spectrum of ocean ambient noise." Journal of the Acoustical Society of America 105, no. 2 (1999): 1361. http://dx.doi.org/10.1121/1.426446.

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9

Zhao, Haoran, Elliott T. Gall, and Brent Stephens. "Measuring the Building Envelope Penetration Factor for Ambient Nitrogen Oxides." Environmental Science & Technology 53, no. 16 (2019): 9695–704. http://dx.doi.org/10.1021/acs.est.9b02920.

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10

Lowrey, S., and G. Reboux. "Rotary Compressor Performance at Low Ambient Temperatures." International Journal of Air-Conditioning and Refrigeration 28, no. 04 (2020): 2050037. http://dx.doi.org/10.1142/s2010132520500376.

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Small rotary compressors are used in domestic heat pump appliances, for example, in domestic dehumidifiers and heat pump clothes dryers. Compressor performance curves provided by the manufacturer can be based on testing at relatively high ambient temperatures, in some cases as high as 35∘C. This can be much higher compared with the ambient temperature in which the compressor operates when, for example, it is installed in a domestic dehumidifier which can operate in ambient temperatures as low as 10∘C. We have developed a compressor calorimeter to test a small R134a rotary compressor extracted
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11

Huifen, Zou, Fei Yingchao, Yang Fuhua, Tang Hao, Zhang Ying, and Ye Sheng. "Mathematical Modeling of Double-Skin Facade in Northern Area of China." Mathematical Problems in Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/712878.

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This paper focuses on the operation principles of the double-skin facade (DSF) in winter of severe cold area. The paper discussed the main influence factors of building energy consumption, including the heat storage cavity spacing, the air circulation mode, the building envelope, and the building orientation. First, we studied the relationship among the thermal storage cavity spacing, the temperature distribution in the cavity of the DSF, and the indoor temperature. Then, we discussed the influence on the ambient temperature in the building exerted by the air circulation system of the double-s
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12

KEHINDE, Tolulope Olaitan, Moruf Ayodele ADEBISI, Isiaq Omoniyi LAWAL, Muibat Modupe SHITTU, and Evelyn Ese OKWI. "Seed longevity characteristics of tomato (Solanum lycopersicum L.) genotypes stored with different packaging materials under ambient tropical humid conditions." Acta agriculturae Slovenica 118, no. 1 (2022): 1. http://dx.doi.org/10.14720/aas.2022.118.1.2444.

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<p class="042abstractstekst"><span lang="EN-US">Tomato seeds have a high commercial value, and the loss of seed physiological quality over time is demonstrated by their low storability unless hermetic conditions are used. This study aimed to store and preserve seed quality under ambient conditions using different packaging materials such as plastic bottles, glass bottles, paper envelope, earthen pot, polyethylene bag, galvanized iron tin. Freshly harvested seeds of four tomato genotypes were packed inside different containers and then sealed and stored for eight months under ambien
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13

Chapman, Nicholas L., Jacqueline A. Davidson, Paul F. Goldsmith, et al. "ALIGNMENT BETWEEN FLATTENED PROTOSTELLAR INFALL ENVELOPES AND AMBIENT MAGNETIC FIELDS." Astrophysical Journal 770, no. 2 (2013): 151. http://dx.doi.org/10.1088/0004-637x/770/2/151.

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14

Yang, Wan, and Linsey C. Marr. "Mechanisms by Which Ambient Humidity May Affect Viruses in Aerosols." Applied and Environmental Microbiology 78, no. 19 (2012): 6781–88. http://dx.doi.org/10.1128/aem.01658-12.

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ABSTRACTMany airborne viruses have been shown to be sensitive to ambient humidity, yet the mechanisms responsible for this phenomenon remain elusive. We review multiple hypotheses, including water activity, surface inactivation, and salt toxicity, that may account for the association between humidity and viability of viruses in aerosols. We assess the evidence and limitations for each hypothesis based on findings from virology, aerosol science, chemistry, and physics. In addition, we hypothesize that changes in pH within the aerosol that are induced by evaporation may trigger conformational ch
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15

Boutet, Maria Laura, and Alejandro Luis Hernández. "Validación de propuestas de optimización ambiental de un jardín de infantes de tipología compacta, en clima muy cálido-húmedo." Revista Hábitat Sustentable 12, no. 1 (2022): 24–43. http://dx.doi.org/10.22320/07190700.2022.12.01.02.

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This article presents the validation procedure of optimization proposals for a compact-typology kindergarten prototype, following passive bioclimatic design guidelines, using dynamic simulation physical models calibrated with onsite measurements. The objective is to verify the parameters for the glazed area (gA), weighted average solar absorptance (), and total envelope area (envelopeA), using them as input data to obtain correlations of glazing Factors (gF) into a tool to estimate optimal glazed areas, aiming at integrating thermal and visual comfort in the design of educational spaces, in th
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16

Fidelis, Ana Paula Santos, Andreza Barboza da Silva, Myllena Matias da Silva, and Mariana Roberta Pedrosa Dias. "Abordagem da educação ambiental em uma escola estadual da região metropolitana do Recife." Natural Resources 3, no. 2 (2014): 6. http://dx.doi.org/10.6008/ess2237-9290.2013.002.0001.

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Educação ambiental é um processo contínuo de aprendizagem, em que a escola e a sociedade, devem estar envolvidas, pois a escola é a peça fundamental no processo de conscientização dos alunos em relação aos problemas ambientais, e assim transformando os alunos em cidadãos conscientes e comprometidos com o futuro. Para sensibilizar os alunos utilizou-se de um problema ambiental enfrentado pela escola que são as enchentes, visto que a escola é localizada nas redondezas do canal do Jordão, sempre que chove intensamente esse canal transborda e impossibilita a passagem de pedestres e dos ônibus e as
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17

Choi, Dong Hee, and Dong Hwa Kang. "Infiltration of Ambient PM2.5 through Building Envelope in Apartment Housing Units in Korea." Aerosol and Air Quality Research 17, no. 2 (2017): 598–607. http://dx.doi.org/10.4209/aaqr.2016.06.0287.

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18

Kumar, S., R. Sheeja, Perumal Pitchandi, B. Mullai Sudaroli, Chandrasekar Pichandi, and G. S. Sai Krishnan. "Numerical analysis of PCM integrated year-round thermal energy savings building for composite climatic conditions." IOP Conference Series: Earth and Environmental Science 1100, no. 1 (2022): 012004. http://dx.doi.org/10.1088/1755-1315/1100/1/012004.

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Abstract Incorporating PCM in building envelopes is a promising energy-saving technique. Because the PCM container maintains a constant temperature when storing and retrieving energy. The PCM is used in building envelopes to diminish solar irradiation, reducing heat penetration and lowering heating and cooling loads. It’s vital to get the right PCM for different climates. Because the ambient air temperature fluctuated a lot throughout the year. PCM temperature effectiveness is highly determined by local ambient weather conditions. It is challenging to design the PCM integrated building for yea
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19

Silvester, Warwick B., Janet K. Silvester, and John G. Torrey. "Adaptation of nitrogenase to varying oxygen tension and the role of the vesicle in root nodules of Alnus incana ssp. rugosa." Canadian Journal of Botany 66, no. 9 (1988): 1772–79. http://dx.doi.org/10.1139/b88-243.

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Growth of Alnus incana ssp. rugosa plants with root systems at Po2 levels of 5, 21, and 40 kPa showed no significant differences among treatments over a 6-week period. Nitrogenase activity of attached nodulated foot systems run in an opencuvette continuous-flow system generally was responsive to Po2 over a broad range around the optimum. Plants expressed acetylene-induced and oxygen-induced transient declines in nitrogenase activity, from which they spontaneously recovered. Nitrogenase activity was seldom stable at any one Po2 during assay with apparent adaptation to both above- and below-ambi
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20

Staszczuk, Anna, and Tadeusz Kuczyński. "Cumulative Multi-Day Effect of Ambient Temperature on Thermal Behaviour of Buildings with Different Thermal Masses." Energies 16, no. 21 (2023): 7361. http://dx.doi.org/10.3390/en16217361.

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In most studies, the effect of the thermal capacity of the building envelope on changes in internal temperatures is reduced to a 24 h period. During this period, daytime heat gains are balanced by nighttime heat losses. The maximum indoor temperature, the diurnal variation of the indoor temperature and the time lag between the occurrence of the maximum daily temperature determine the effect achieved. The aim of the article was to show that the effect of the thermal capacity of a building on the indoor temperature is not limited to 24 h but accumulates over a period of several days, mainly depe
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21

Karanafti, A. C., and T. G. Theodosiou. "Investigation of the envelope’s thermal transmittance influence on the energy efficiency of residential buildings under various Mediterranean region climates." IOP Conference Series: Earth and Environmental Science 899, no. 1 (2021): 012009. http://dx.doi.org/10.1088/1755-1315/899/1/012009.

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Abstract Improving the energy efficiency of residential buildings is of outmost importance for reducing their environmental footprint. Recent studies demonstrate that a highly insulated building envelope may burden the building’s performance during the cooling period, especially in regions with hot summers. In this study, the energy performance of a residential building in different Mediterranean regions (Jordan, Greece, Iraq, Egypt, Syria, Morocco, Cyprus, Saudi Arabia, Libya, and Spain) is investigated. Two thermal transmittance values are applied to the building shell, a scenario with a ver
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22

Li, Peiyuan, Yufeng Chen, and Wenlan Fan. "Aero-engine performance evaluation model in the entire flight envelope." Journal of Physics: Conference Series 2797, no. 1 (2024): 012018. http://dx.doi.org/10.1088/1742-6596/2797/1/012018.

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Abstract An aero-engine performance characteristics mathematical model in the entire flight envelope is proposed based on the stratification analysis method and multi-condition test data. The thrust, fuel flow, low/high-pressure rotor speed, exhaust temperature, and other engine output parameters can be calculated in the entire flight envelope, according to the engine operating characteristic model and input parameters of aircraft flight altitude, velocity, ambient temperature, throttle angle, etc. Based on the evaluation model proposed in this paper, the evaluation data of an aero-engine is c
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23

Karim, Mohamed. "Analytic Modeling to Study the Insolation Heat Gain of Semi Insulated Building in Hot Climate." Academy Journal For Basic and Applied Sciences 7, no. 1 (2025): 1–5. https://doi.org/10.5281/zenodo.15507447.

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Countries located in temperate, hot and arid climates, such as Libya, face the critical need to cool houses whose internal temperatures rise due to these climatic conditions. This can be achieved by employing proper insulation techniques to prevent heat gain from solar radiation (insolation). This paper addresses the impact of not implementing thermal insulation for the roof of a building, in contrast to other external parts of the structure. The temperature distribution in a single-story building was studied using finite element analysis (FEA), along with how the building absorbs heat from it
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24

Ma, N., Q. Zhang, and W. W. Braham. "Rethinking building envelope design: Machine learning approaches to evaluate its impact on indoor ozone exposures." Journal of Physics: Conference Series 2600, no. 10 (2023): 102002. http://dx.doi.org/10.1088/1742-6596/2600/10/102002.

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Abstract Ozone is widely recognized as an ambient air contaminant that causes acute and chronic health effects. However, there is a limited number of studies investigating indoor exposures to ozone in occupied houses and linking design variables to the predictive power of indoor ozone levels. This study focuses on typical envelope airflow paths used in residences in the Philadelphia area in the United States. The model development draws from the field data, including indoor and outdoor ozone concentration, environmental parameters, and building characteristics from four building envelopes. Fiv
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25

Mao, Ho-Kwang, and Wendy L. Mao. "Geomimicry—Liberating high-pressure research by encapsulation." Matter and Radiation at Extremes 7, no. 6 (2022): 068102. http://dx.doi.org/10.1063/5.0126898.

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High pressures induce changes of properties and structures that could greatly impact materials science if such changes were preserved for ambient applications. Mimicking the geological process of diamond formation that the pressures and high-pressure phases in diamond inclusions can be preserved by the strong diamond envelope, we discuss the perspectives that such process revolutionizes high-pressure science and technology and opens a great potential for creation of functional materials with extremely favorable properties.
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26

Schindelheim, Peri, Travis Court, Carles Badenes, et al. "SNR 0519−69.0 as a Type Ia Explosion in a Planetary Nebula Cocoon." Research Notes of the AAS 8, no. 12 (2024): 309. https://doi.org/10.3847/2515-5172/ad9dd4.

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Abstract The degree to which Type Ia Supernova (SN Ia) progenitors modify their surroundings remains an open question. In this work, we explore the parameter space for circumstellar interaction in Type Ia Supernova Remnant (SNR) 0519−69.0 by comparing observed archival Chandra spectra with model SNR spectra calculated assuming different SN Ia explosion scenarios and ambient medium (AM) structures. We compared SNR models expanding into a uniform AM with those expanding into a post-common envelope cocoon generated from a planetary nebula model. We conclude that the X-ray spectra and bulk dynamic
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27

Cardoso da Silva, Filipe, and Ana Belchior Melícias. "ROSA DE JERICÓ E O ENVELOPE INSTITUCIONAL." Revista Portuguesa de Psicanálise 41, no. 2 (2021): 74–85. http://dx.doi.org/10.51356/rpp.412a6.

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Utilizaremos a metáfora da Rosa de Jericó para entrelaçar duas questões que a menina a quem chamaremos Rosa nos apresentou, com invulgar capacidade expressiva e transformativa. De um lado, a capacidade de sobrevivência psíquica (resiliência? competências inatas?) perante um ambiente traumático de violência, abandono, negligência, ruturas e descontinuidades. De outro, a hipótese de que as inúmeras instituições que acolheram este fio de descontinuidade funcionaram como uma pele psíquica (Bick, 1968/1991), um envelope institucional (Houzel, 2010), e como «anjos no quarto do bebé» (Lieberman et al
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28

Qiu, Jiayi, Haixi Zhang, Jialu Liu, and Yanhua Liu. "The Impact of Indoor Air Humidity on the Infiltration of Ambient Particles." Buildings 14, no. 4 (2024): 1022. http://dx.doi.org/10.3390/buildings14041022.

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Ambient particles contribute to occupant exposure as they infiltrate indoor environments through building envelope cracks, impacting indoor air quality. This study investigates the impact of indoor air humidity on the infiltration of ambient particles, highlighting humidity’s crucial role in influencing particle dynamics in indoor environments. Employing a controlled chamber system, we conducted experiments to quantify the infiltration of size-resolved particles under varying relative humidity (RH) conditions. Both the total number and the mass concentration of particles increased with RH in t
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29

HACKENBERG, PETER, and GOTTFRIED MANN. "Parallel weak envelope solitons in multi-ion plasmas." Journal of Plasma Physics 61, no. 4 (1999): 633–44. http://dx.doi.org/10.1017/s0022377899007631.

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Heavy ions frequently appear as minor components in space plasmas, for example as charged helium in the solar wind and heavy ions in the vicinity of comets. Both the different components of ions and the associated plasma waves are observed by extraterrestrial in situ measurements. These plasma waves appear as large-amplitude magnetic field fluctuations in space plasmas. They must be described appropriately by means of multifluid equations. Because of the nonlinear nature of these waves, we here investigate nonlinear waves in multi-ion plasmas. Solitary waves that can only exist in a magnetized
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30

Weiter, Ross. "Integrity considerations for dehydration of carbon dioxide." APPEA Journal 62, no. 2 (2022): S200—S204. http://dx.doi.org/10.1071/aj21040.

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Carbon capture, sequestration, and utilisation is widely considered to be one of the key enablers to decarbonising the economy. Transportation of carbon dioxide (CO2) is a key focal area in any carbon capture and storage project. While dehydration of natural gas for transportation is well understood and regulated, the same cannot be said for CO2. This is due to its immaturity relative to natural gas and due to properties of CO2 being radically different to those of hydrocarbons. One of those physical properties is the ability of CO2 to saturate with water. Excessive water in CO2 transportation
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31

Kamegai, Kazuhisa, Masaaki Hiramatsu, Takahiro Hayakawa, et al. "Submillimeter-wave observations of outflow and envelope around the low mass protostar IRAS 13036-7644." Proceedings of the International Astronomical Union 2, S237 (2006): 432. http://dx.doi.org/10.1017/s1743921307002207.

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The interaction between molecular outflow from a protostar and ambient molecular cloud would play an important role in dissipating circumstellar envelope, changing chemical composition, and triggering next generation star formation. In order to investigate the interaction in submillimeter wavelength, we have made line observations toward the low mass protostar IRAS 13036-7644 (Class 0/I) in the Cha II dark cloud. Although millimeter observations found CO outflow and evidence of mass infall toward the protostar (e.g. Lehtinen 1997), no submillimeter observation has been reported so far.
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32

Amaral, Denise Campos, Geovanna Rafael Martins, Larissa Caldeira Alves Mendes, Diogo Rodrigues Cruvinel, Mayara Barbosa Viandelli Mundim, and Carolina Cintra Gomes. "REDUÇÃO DE RESÍDUOS NA CLÍNICA ODONTOLÓGICA APÓS IMPLANTAÇÃO DO PROTOCOLO DE FLUXO RADIOGRÁFICO DIGITAL." Scientific Investigation in Dentistry 25, no. 1 (2020): 17–24. http://dx.doi.org/10.37951/2317-2835.2020v25i1.p17-24.

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Objetivo: O objetivo neste estudo foi contabilizar a quantidade de resíduos, provenientes dos filmes radiográficos convencionais, que deixou de ser produzido com a implantação do sistema de imagem digital no Centro de Diagnóstico por Imagem da UniEVANGÉLICA (CDI). Material e Métodos: Foram contabilizados 2554 exames intrabucais realizados durante o ano letivo de 2017. Cada componente do filme radiográfico intrabucal (película de chumbo, papel preto e envelope plástico) foi pesado individualmente e comparados com o peso do plástico usado para isolar o receptor de imagem do tipo placa de fósforo
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33

Cai, Huikang, Shuaijie Sha, Tai Xu, Yannan Li, and Hanzhong Tao. "Numerical simulation of indoor air distribution and wall heat storage under accident conditiohs in a main control room." Thermal Science, no. 00 (2024): 100. http://dx.doi.org/10.2298/tsci240119100c.

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The main control room serves as a refuge for staff in a nuclear power plant in the event of an accident. To determine whether the control room can meet habitability requirements under accident conditions, this study utilized computational fluid dynamics methods to establish a habitability model of the main control room under such conditions. The changing trends of temperature and velocity near personnel were analyzed. The numerical results indicate that the building envelope significantly contributes to reducing the indoor temperature. The average wall temperature measured at 72 hours was 27?C
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34

Musorina, Tatiana A., Mikhail R. Petrichenko, Darya D. Zaborova, and Olga S. Gamayunova. "Determination of active and reactive thermal resistance of one-layer building envelopes." Vestnik MGSU, no. 8 (August 2020): 1126–34. http://dx.doi.org/10.22227/1997-0935.2020.8.1126-1134.

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Introduction. The subject of the study is the individual characteristics of a 0.51 m thick external single-layer building envelope made of solid ceramic bricks. The paper focuses on the heat engineering parameters of the wall, namely, the calculation of active and reactive thermal resistances. We determine the differences between the two types of resistances. We also provide an example of calculating the thermal boundary layer in which all temperature fluctuations occur and determining the amount of heat absorbed and released by the envelope.
 Materials and methods. We give consideration
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35

Agranovski, Igor E., Oleg V. Pyankov, and Igor S. Altman. "Bioaerosol Contamination of Ambient Air as the Result of Opening Envelopes Containing Microbial Materials." Aerosol Science and Technology 39, no. 11 (2005): 1048–55. http://dx.doi.org/10.1080/02786820500380230.

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36

Anand, Y., A. Gupta, A. Maini, et al. "Comparative Thermal Analysis of Different Cool Roof Materials for Minimizing Building Energy Consumption." Journal of Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/685640.

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The roof and walls in the urban areas contribute to major share in the absorption of solar radiations and also retard the outflow of the absorbed radiation from the building envelope, thereby increasing the global warming by inducing the heat island effect. The impact of using cool roof technologies on the thermal comfort of the office buildings has been estimated. Cool roofs reduce electricity consumption for maintaining the temperature of the air-conditioned buildings in the comfort level and also increase comfort in buildings merely not relying completely on cooling equipment. The cool roof
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37

Busso, Maurizio. "Magnetic and non-magnetic AGB mixing for s-processing." EPJ Web of Conferences 275 (2023): 01005. http://dx.doi.org/10.1051/epjconf/202327501005.

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I outline a few features of recent models for the formation of the neutron source 13C(α,n)16O in low mass stars (1 ≲ M/M⊙ ≲ 3, LMS ) ascendingfor the second time the Red Giant Branch, generally called Asymptotic Giant Branch, or AGB stars. I also briefly outline the nucleosynthesis results obtained trough them. The mentioned models consider the physical structure below the frequent downward extensions of the convective envelope into the He-intershell (the so-called third dredge-up or TDU episodes). There, the conditions are such that the occurrence of further mixing is strongly facilitated, du
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38

Magalhães, A. M., A. C. Carciofi, and D. B. Seriacopi. "Circumstellar Polarimetry." Proceedings of the International Astronomical Union 10, S305 (2014): 257–68. http://dx.doi.org/10.1017/s1743921315004871.

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AbstractStarlight polarization provides insight into the physical mechanisms in and around the source as well as its geometry, whether or not the source is resolved. In this talk we will review mechanisms that polarize light in stellar envelopes. The observations and modeling can be used to probe the physics of the circumstellar environment as well as its relation to the ambient interstellar environment.
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39

Chamandy, Luke, Eric G. Blackman, Adam Frank, Jonathan Carroll-Nellenback, and Yisheng Tu. "Common envelope evolution on the asymptotic giant branch: unbinding within a decade?" Monthly Notices of the Royal Astronomical Society 495, no. 4 (2020): 4028–39. http://dx.doi.org/10.1093/mnras/staa1273.

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ABSTRACT Common envelope (CE) evolution is a critical but still poorly understood progenitor phase of many high-energy astrophysical phenomena. Although 3D global hydrodynamic CE simulations have become more common in recent years, those involving an asymptotic giant branch (AGB) primary are scarce, due to the high computational cost from the larger dynamical range compared to red giant branch (RGB) primaries. But CE evolution with AGB progenitors is desirable to simulate because such events are the likely progenitors of most bi-polar planetary nebulae (PNe), and prominent observational testin
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40

Xie, Xiaoyu, Zilin Zhu, Yu Meng, et al. "Ambient-Dried Silica Xerogels with Enhanced Strength and Thermal Insulation via Calcium Ion-Glycerol Synergistic Crosslinking." Gels 11, no. 6 (2025): 462. https://doi.org/10.3390/gels11060462.

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Despite their high porosity and wide applicability, silica xerogels face mechanical strength limitations for high-performance applications. This study presents an ambient-pressure sol-gel strategy utilizing calcium-glycerol synergy to produce robust xerogels with enhanced properties. Physicochemical analyses reveal that controlled Ca2+ incorporation (optimal at 6 wt.%) accelerates gelation kinetics while establishing a hybrid network through ionic complexation and hydrogen bonding. The resulting xerogels achieve exceptional compressive strength (30.8 MPa) while maintaining uniform mesoporosity
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41

Zhang, Zhen-dong, Mamdoh Alajami, and Tariq Alkhalifah. "Wave-equation dispersion spectrum inversion for near-surface characterization using fibre-optics acquisition." Geophysical Journal International 222, no. 2 (2020): 907–18. http://dx.doi.org/10.1093/gji/ggaa211.

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SUMMARY Distributed acoustic sensing (DAS) acquisition is becoming more and more popular for its dense sampling at a lower cost than seismometers. However, data processing for DAS data is challenging, especially for surface-deployedfibers, in which only the horizontal component of strain variation is effectively recorded. Also, the coupling between the fiber and the Earth is usually poor and the recorded single-component data are noisy. Thus, we introduce data processing strategies dedicated to enhancing the ambient-noise and active-source seismic data recorded by a horizontally deployed tacti
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42

Chen, Xinxin, and Shuli Sun. "Resonance Detection Method and Realization of Bearing Fault Signal Based on Kalman Filter and Spectrum Analysis." Applied Sciences 13, no. 3 (2023): 1472. http://dx.doi.org/10.3390/app13031472.

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The rolling bearing is an important part of mechanical equipment, and its performance significantly affects the quality and life of the mechanical equipment. This article uses the integrated fiber Bragg grating resonant structure sensor excited by periodic micro-shocks caused by micro faults to realize the extraction of information relating to potential faults. Because the fault signal is weak and can easily be interfered with by ambient noise, in order to extract the effective signal, this article determines the autoregressive model of bearing vibration by the final prediction error criterion
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43

Kompatscher, Karin, Rick P. Kramer, Bart Ankersmit, and Henk L. Schellen. "Indoor Airflow Distribution in Repository Design: Experimental and Numerical Microclimate Analysis of an Archive." Buildings 11, no. 4 (2021): 152. http://dx.doi.org/10.3390/buildings11040152.

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The majority of cultural heritage is stored in archives, libraries and museum storage spaces. To reduce degradation risks, many archives adopt the use of archival boxes, among other means, to provide the necessary climate control and comply with strict legislation requirements regarding temperature and relative air humidity. A strict ambient indoor climate is assumed to provide adequate environmental conditions near objects. Guidelines and legislation provide requirements for ambient indoor climate parameters, but often do not consider other factors that influence the near-object environment,
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44

Wild, Peter, Claudia Senn, Céline L. Manera, et al. "Exploring the Nuclear Envelope of Herpes Simplex Virus 1-Infected Cells by High-Resolution Microscopy." Journal of Virology 83, no. 1 (2008): 408–19. http://dx.doi.org/10.1128/jvi.01568-08.

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ABSTRACT Herpesviruses are composed of capsid, tegument, and envelope. Capsids assemble in the nucleus and exit the nucleus by budding at the inner nuclear membrane, acquiring tegument and the envelope. This study focuses on the changes of the nuclear envelope during herpes simplex virus 1 (HSV-1) infection in HeLa and Vero cells by employing preparation techniques at ambient and low temperatures for high-resolution scanning and transmission electron microscopy and confocal laser scanning microscopy. Cryo-field emission scanning electron microscopy of freeze-fractured cells showed for the firs
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45

Tu, Qiang, Fei Yuan, Weidi Yang, and En Cheng. "An Approach for Diver Passive Detection Based on the Established Model of Breathing Sound Emission." Journal of Marine Science and Engineering 8, no. 1 (2020): 44. http://dx.doi.org/10.3390/jmse8010044.

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Diver breathing sounds can be used as a characteristic for the passive detection of divers. This work introduces an approach for detecting the presence of a diver based on diver breathing sounds signals. An underwater channel model for passive diver detection is built to evaluate the impacts of acoustic energy transmission loss and ambient noise interference. The noise components of the observed signals are suppressed by spectral subtraction based on block-based threshold theory and smooth minimal statistic noise tracking theory. Then the envelope spectrum features of the denoised signal are e
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46

Sanders, Nicholas J., and Alan I. Barreca. "Adaptation to Environmental Change: Agriculture and the Unexpected Incidence of the Acid Rain Program." American Economic Journal: Economic Policy 14, no. 1 (2022): 373–401. http://dx.doi.org/10.1257/pol.20190060.

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The Acid Rain Program (ARP) cut sulfur dioxide (SO2) emissions from power plants in the United States, with considerable benefits. We show this also reduced ambient sulfate levels, which lowered agriculture productivity through decreased soil sulfur. Using plant-level SO2 emissions and an atmospheric transport model, we estimate the relationship between airborne sulfate levels and yields for corn and soybeans. We estimate crop revenue losses for these two crops at around $1–$1.5 billion per year, with accompanying decreases in land value. Back-of-the-envelope calculations of the costs to repla
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47

Dwarkadas, Vikram V., Roger A. Chevalier, and John M. Blondin. "Effect of ambient wind velocity on Planetary Nebula morphology." Symposium - International Astronomical Union 180 (1997): 224. http://dx.doi.org/10.1017/s0074180900130451.

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Planetary Nebulae (PNe) are formed by the interaction of the fast wind from a post-Asymptotic Giant Branch Star with the slow ambient wind from a previous epoch. If the two interacting winds have constant properties, the velocity of the PN shell tends towards a constant with time and the shape becomes self-similar. Additionally, if the velocity of the fast wind is much higher than the expansion velocity of the shell, the interior of the hot shocked bubble becomes isobaric. Using semi-analytical methods, complemented by hydrodynamic simulations, we have calculated the shapes of PNe in the self-
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48

Maureira, María José, Héctor G. Arce, Michael M. Dunham, et al. "ALMA observations of envelopes around first hydrostatic core candidates." Monthly Notices of the Royal Astronomical Society 499, no. 3 (2020): 4394–417. http://dx.doi.org/10.1093/mnras/staa2894.

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ABSTRACT We present ALMA 3 mm molecular line and continuum observations with a resolution of ∼3.5 arcsec towards five first hydrostatic core (FHSC) candidates (L1451-mm, Per-bolo 58, Per-bolo 45, L1448-IRS2E, and Cha-MMS1). Our goal is to characterize their envelopes and identify the most promising sources that could be bona fide FHSCs. We identify two candidates that are consistent with an extremely young evolutionary state (L1451-mm and Cha-MMS1), with L1451-mm being the most promising FHSC candidate. Although our envelope observations cannot rule out Cha-MMS1 as an FHSC yet, the properties
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49

Dzieran, L., M. Thorwart, and W. Rabbel. "Seismoelectric monitoring of aquifers using local seismicity—a feasibility study." Geophysical Journal International 222, no. 2 (2020): 874–92. http://dx.doi.org/10.1093/gji/ggaa206.

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SUMMARY Seismoelectric (SE) signals, accompanying seismic wave fields radiated from earthquakes, can be observed on records of magnetotelluric stations. Assuming that these SE signals are generated by electrokinetic coupling we investigate whether they can be used as a ‘pore-space monitoring’-tool. Regarding future field experiments we analyse synthetic SE waveforms calculated for a fully saturated base model consisting of five layers overlying a half-space, resembling the conditions of the Armutlu Peninsula (Turkey). This example site stands for a location with near-surface thermal aquifers e
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50

Ai 艾, Tsung-Han 宗瀚, Chun-Fan 君帆 Liu 劉, Hsien 賢. Shang 尚, Doug Johnstone, and Ruben Krasnopolsky. "A Unified Model for Bipolar Outflows from Young Stars: Kinematic and Mixing Structures in HH 30." Astrophysical Journal 964, no. 2 (2024): 147. http://dx.doi.org/10.3847/1538-4357/ad2355.

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Abstract The young stellar source HH 30 is a textbook example of an ionic optical jet originating from a disk in an edge-on system shown by the Hubble Space Telescope. It has a remnant envelope in 12CO observed by the Atacama Large Millimeter/submillimeter Array. The optical jet is characterized by its narrow appearance, large line width at the base, and high temperature inferred from line diagnostics. Three featured structures can be identified, most evident in the transverse position–velocity diagrams: an extremely-high-velocity wide-angle wind component with large spectral widths in the opt
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