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Preprint ARTICLE | doi:10.20944/preprints202207.0188.v1

Nanocomposites and Semiconductor Devices Based on Recycled Radioactive Waste

Valeriy Kizka

Subject: Physical Sciences, Radiation And Radiography Keywords: recycling; radioactive waste; radioactive nanopowders; radioactive nanocomposites; radioactive semiconductor devices; radioactive space microelectronics; space industry

Online: 12 July 2022 (10:08:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0239.v1

Gray Public Space Under Urban Bridge - A Case Study of Public Arts Space Micro-Transformation Focusing on "Regional Culture" and "Art for All"

Ting Liu Liu, Wu Cao, Yuyi Liu

Subject: Arts And Humanities, Art Keywords: Urban grey space; Space under bridge; Public Art; Micro-transformation; Regional culture; Art for all

Online: 26 April 2022 (10:55:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0620.v2

Parks are Critical Urban Infrastructure: Perception and Use of Urban Green Spaces in NYC During COVID-19

Bianca Lopez, Christopher Kennedy, Timon McPhearson

Subject: Business, Economics And Management, Accounting And Taxation Keywords: Urban green space; COVID-19; urban parks; open space; New York City; urban infrastructure; equity

Online: 30 September 2020 (10:00:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1237.v1

Spatiotemporal Evolution of the Land Cover over Deception Island, Antarctica, Its Driving Mechanisms and Its Impact on the Shortwave Albedo

Javier F. Calleja, Rubén Muñiz, Jaime Otero, Francisco Navarro, Carleen Reijmer, Miguel Ángel De Pablo, Susana del Carmen Fernández

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: cryosphere; albedo; landscape; air temperature; solar radiation

Online: 16 January 2024 (12:36:52 CET)

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The aim of this work is to provide a full description of how air temperature and solar radiation induce changes in the land cover over an Antarctic site. We use shortwave broadband albedo (albedo integrated in the range 300-3000 nm) from a spaceborne sensor and from field surveys to calculate the monthly relative abundance of landscape units. Field albedo data were collected using a portable albedometer over seven landscape units: clean fresh snow; clean old snow; rugged landscape composed of dirty snow with disperse pyroclasts and rocky outcrops; dirty snow; stripes of bare soil and snow; shallow snow with small bare soil patches; bare soil. MODIS MCD43A3 daily albedo product was downloaded using the Google Earth Engine API from the 2000-2001 season to the 2020-2021 season. Each landscape unit was characterized by an albedo normal distribution. The monthly relative abundance of the landscape units were calculated by fitting a linear combination of the normal distributions to the histogram of the MODIS monthly mean albedo. The monthly relative abundance of the landscape unit consisting of rugged landscape composed of dirty snow, with dispersed clasts and small rocky outcrops exhibits a high linear positive correlation with the monthly mean albedo (R2=0.87) and a high linear negative correlation with the monthly mean air temperature (R2= 0.69). The increase of the solar radiation energy flux from September to December coincides with the decrease of the relative abundance of the landscape unit composed of dirty snow with dispersed clasts and small rocky outcrops. We propose a mechanism to describe the evolution of the landscape: uncovered pyroclasts act as melting centres favouring the melting of surrounding snow. Ash does not play a decisive role in the melting of the snow. The results also explain the observed decreasing of the thaw depth of the permafrost on the island in the period 2006-2014, resulting from an increase in the snow cover over the whole island.

Preprint ARTICLE | doi:10.20944/preprints202312.0062.v1

The Effect of Varying Air Flow Solar Collector on the Quality of Arabica Coffee Beans

Parulian Siagian, Farel Hasiholan Napitupulu, Himsar Ambarita, Hendrik Voice Sihombing, Yogie Probo Sibagariang, Horas Sotardodo Siagian

Subject: Engineering, Mechanical Engineering Keywords: coffee; air flow; forced convection; temperature; quality

Online: 1 December 2023 (08:19:28 CET)

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Different coffee drying technologies face complex task in ensuring an acceptable final seed moisture content. Drying technology of agricultural commodities aims to maintain and improve the quality of the agricultural products themselves. In addition to maintaining quality, especially from other bacterial attacks, it can last for a long time before further processing. Coffee commodities are promising for the welfare of coffee farmers. Drying technology plays a major role in determining the quality of coffee. Various drying models are applied including the traditional model that until now is still applied, direct drying under solar radiation. However, this drying process is less hygienic and requires a large area. Thus, one of the drying technologies that can accelerate drying time is to vary the air flow in the drying chamber so that the coffee can be determined to reduce the water content with a certain temperature. In this study, it was found that the moisture content of coffee beans dried using a dryer on air flow with variations of velocity in solar collector 1 (DB1) air velocity of 1.0m/s obtained the final mass = 732.249 gr, solar collector 2 (DB2) with air velocity 1.5 m/s obtained the final mass = 774.70 gr, solar collector 3 (DB3) with air velocity 2.0 m/s obtained the final mass = 855.10 gr, solar collector 4 (DB4) with air velocity 2.5 m/s obtained the final mass = 745.79 gr, and solar collector 5 (DB5) with air velocity 3.0 m/s obtained the final mass = 786.40 gr. Water Content DB1=12.0%, DB2=13.6%, DB3=18.5%, DB4=12.9% and DB5=15.2%. The time required for 25 hours with a maximum radiation of 586.9 w/m2, total heat utilized from solar radiation in 3 days =16.663128 MJ/m2. from the initial weight of 1500gr coffee bean samples and dried in five solar collectors with parallel simultaneously. The evaporated water content DB1=51.18%, DB2=48.35%, DB3=42.96%, DB4=50.28% and DB5=47.57%. Based on this research, it was found that the most optimum quality of coffee was by using solar collector 2 (DB2), namely with air flow of 1.5 m/s with average temperature in the drying box DB2=43.68°C, with the quality content of the coffee, Protein content=12.2%, Carbohydrate=22.8% and Free Fatty Acid (ALB) content=0.05%.

Preprint REVIEW | doi:10.20944/preprints202308.1381.v1

TiO₂-Based Photocatalytic Building Material for Air Purification in Sustainable and Low-Carbon Cities: A Review

Xiao yu Bai, Hong Meng, Que Wu, Yuan chen Wei, Yong qing Zhang

Subject: Environmental And Earth Sciences, Environmental Science Keywords: TiO2; Air purification; Sustainable cities; Photocatalytic buildings

Online: 21 August 2023 (02:35:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1121.v1

Temporal and Spatial Correlation of Air Pollution with COVID-19 in the USA: Challenges and Implications

Mohammad Maniat, Hosein Habibi, Elham Manshoorinia, Payam Marous, Pouyan Sanjari Pirayvatlou, Alireza Majidi

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: COVID-19; population density; air pollution; PM2.5

Online: 16 August 2023 (07:54:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1869.v1

Reducing Outdoor Air Pollutants through Moss-Based BioTechnological Purification Filter in Kazakhstan

Andrii Biloshchytskyi, Oleksandr Kuchanskyi, Yurii Andrashko, Didar Yedilkhan, Alexandr Neftissov, Svitlana Biloshchytska, Beibut Amirgaliyev, Vladimir Vatskel

Subject: Computer Science And Mathematics, Other Keywords: biotechnological filter; moss; air pollution; smart city

Online: 27 July 2023 (10:17:49 CEST)

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Preprint REVIEW | doi:10.20944/preprints202307.1691.v1

Air Pollution and Its Effect on Human Health

Dr. Laxmi Kant Bhardwaj, Vinay Vikram

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Air Pollution; Polar Regions; Grasshopper Effects; Environment

Online: 25 July 2023 (09:57:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1430.v1

Temporal Evolution of PM2.5 Levels Related to COVID-19 Mortality in Europe for the Early-2020 to End-2022 Period

Jean-Baptiste Renard, Jeremy Surcin, Isabella Annesi-Maesano, Eric Poincelet

Subject: Environmental And Earth Sciences, Pollution Keywords: Covid-19; mortality; PM2.5; air pollution; Europe

Online: 20 June 2023 (10:45:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.2149.v1

Community Health Risk Awareness and Knowledge of Air Pollution in Annadale, Polokwane Local Municipality, Lim-popo Province, South Africa

Famola Charles Ngobeni, Mokoko Percy Kekana

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: Community; Health Risk; Awareness; Knowledge; Air Pollution

Online: 30 May 2023 (13:15:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0870.v1

Implementing and Improving CBMZ-MAM3 Chemistry and Aerosol Modules in the Regional Climate Model WRF-CAM5: An Evaluation over the Western US and Eastern North Pacific

Xiaokang Wu, Yan Feng, Cenlin He, Rajesh Kumar, Cui Ge, David Painemal, Yangyang Xu

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: atmospheric chemistry; air quality; climate-chemistry model

Online: 11 May 2023 (14:31:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0766.v1

A Review of the State of the Art of Hot Air Frying Technology

José Alfredo Téllez-Morales

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Hot air-frying; Food; Technology; Oil intake

Online: 23 April 2023 (04:27:36 CEST)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202302.0503.v1

Supplemental Analyses for Comment on “Impacts of Sugarcane Fires on Air Quality and Public Health in South Florida”

Andrew Shapero, Stella Keck, Emily Goswami, Adam Love

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: ; particulate matter; statistics; air modeling ;

Online: 28 February 2023 (04:20:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202210.0176.v1

Aerosol Mineral Dust Pollution over Nicosia, Cyprus, April 2019

Yuliia Yukhymchuk, Gennadi Milinevsky, Ivan Syniavskyi, Ioana Popovici, Florin Unga, Jean Sciare, Franco Marenco, Michael Pikridas, Philippe Goloub

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: aerosol; AERONET; lidar; air pollution; sun-photometer

Online: 12 October 2022 (10:33:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0170.v1

Evaulation of a Model for Urban Vegetation Barriers’ Effects on Air Pollution

Ray F. Nassar

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Air pollution; environmental hazards; Volatile Organic Compounds

Online: 8 January 2021 (16:59:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0154.v1

Effects of Local Meteorology and Emissions on Winter PM2.5 Variability in Fresno

Thishan D. Karandana G., Mark Green, William Stockwell

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Air Pollution; PM2.5; SJV; Winter; Stability; Meteorology

Online: 15 January 2020 (12:51:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0057.v1

Microbiological Air Quality in Heating, Ventilation and Air Conditioning Systems of Surgical and Intensive Care Areas: Application of a Disinfection Procedure for the Dehumidification Devices

Michele Totaro, Anna Laura Costa, Beatrice Casini, Sara Profeti, Antonio Gallo, Lorenzo Frendo, Andrea Porretta, Paola Valentini, Gaetano Privitera, Angelo Baggiani

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: HVAC; Aspergillus spp.; hydrogen peroxide; air disinfection

Online: 4 December 2018 (10:56:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0153.v1

Cosmic-Ray Extremely Distributed Observatory: Status and Perspectives

Dariusz Gora

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Cosmic-rays; Citizien Science; Extensive air showers

Online: 8 October 2018 (15:45:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0600.v1

Methane, Nitrous Oxide and Ammonia Emissions from Livestock Farming in the Red River Delta, Vietnam: An Inventory and Projection for 2000-2030

An Ha Truong, Minh Thuy Kim, Thi Thu Nguyen, Ngoc Tung Nguyen, Quang Trung Nguyen

Subject: Environmental And Earth Sciences, Environmental Science Keywords: emission inventory; livestock; greenhouse gases; air pollutant

Online: 30 September 2018 (06:04:22 CEST)

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Preprint REVIEW | doi:10.20944/preprints201808.0471.v2

Impact of Maternal Air Pollution Exposure on Children’s Lung Health: An Indian Perspective

Pritam Saha, Ebin Johny, Ashish Dangi, Sopan B Shinde, Mathew Eapen, Sukhwinder Sohal, VGM Naidu, Pawan Sharma

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: PM, air pollution, maternal exposure, airways disease

Online: 5 September 2018 (10:31:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0423.v1

Biofilm removal and bacterial re-colonization inhibition of a novel erythritol/chlorhexidine air-polishing powder on titanium disks.

MAGDA MENSI, ANDREA COCHIS, ANNAMARIA SORDILLO, FRANCESCA UBERTI, LIA RIMONDINI

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: air-polishing; titanium; erythritol; chlorhexidine; biofilm; implants;

Online: 23 July 2018 (12:41:42 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints201608.0174.v1

Variation of Ambient Air Quality Scenario in Chittagong City: A Case Study of Air Pollution

Md. Arif Hossen, Asiful Hoque

Subject: Engineering, Civil Engineering Keywords: Air Quality; Gaseous Pollutants; AQI, PM2.5; PM10

Online: 18 August 2016 (10:36:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1858.v1

Evaluation of Surrogate Aerosol Experiments to Predict Spreading and Removal of Virus-Laden Aerosols

Janis Beimdiek, Hans-Joachim Schmid

Subject: Environmental And Earth Sciences, Environmental Science Keywords: surrogate aerosols; indoor air cleaners; ultra-fine particles; COVID-19; test method; field experiments: clean air delivery rate

Online: 25 January 2024 (14:12:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202106.0570.v1

Both Classical and Quantum Information: Both Bit and Qubit. Both Physical and Transcendental Time

Vasil Penchev

Subject: Physical Sciences, Quantum Science And Technology Keywords: bit and qubit, classical and quantum information, epoché, physical and mathematical transcendentalism, qubit space (qubit Hilbert space), separable complex Hilbert space, the totality, transcendental time

Online: 23 June 2021 (11:12:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1704.v1

Vision System for the Mars Sample Return Capture, Containment and Return System (CCRS)

Brent Jon Bos, David Donovan, John Capone, Chen Wang, Terra Hardwick, Dylan Bell, Yuqing Zhu, Robert Podgurski, Bashar Rizk, Ireneusz Orlowski, Rachel Edison, David Harvey, Brianna Dizzon, Lindsay Haseltine, Kristoffer Olsen, Chad Sheng, Robert Bousquet, Luan Vo, Georgi Georgiev, Kristen Washington, Michael Singer, Stefan Ioana, Anloc Le, Elena Georgieva, Michael Hackett, Michael Ravine, Michael Caplinger, Phillip Coulter, Erin Percy, Charles Torisky, Jean Lauenstein, Kaitlyn Ryder, Michael Campola, Dillon Johnstone, William J. Thomes, Richard G. Schnurr, John McCloskey, Eugenia DeMarco, Ellen Lee, Calinda Yew, Bo Yang, Mingyu Han, Bartosz Blonski

Subject: Aerospace Engineering, Engineering Keywords: Mars; cameras; sample return; space optics

Online: 26 April 2024 (09:33:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0342.v1

Nonlinear Heisenberg-Robertson-Schrodinger Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Lipschitz map; Banach space

Online: 6 February 2024 (09:28:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0799.v1

Hypersurfaces in a Euclidean Space with a Killing Vector Field

Mohammed Guediri, Sharief Deshmukh

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Euclidean space; Hypersurface; Killing vector field

Online: 13 November 2023 (10:21:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202309.0918.v1

Categorical Join and Generating Families in Diffeological Spaces

Enrique Macías -Virgós, Reihaneh Mehrabi

Subject: Computer Science And Mathematics, Geometry And Topology Keywords: Diffeological space; Generating family; Categorical join

Online: 14 September 2023 (08:36:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0445.v1

Antigravity in the Six Dimensional Space-Time

seyed kazem mousavi

Subject: Physical Sciences, Applied Physics Keywords: antigravity; electromagnetic; six dimensional space-time

Online: 7 September 2023 (02:49:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1108.v1

An Endpoint Functional Continuous Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle, Parseval Frame, Banach space.

Online: 15 August 2023 (09:08:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1643.v1

Functional Continuous Uncertainty Principle

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Analysis Keywords: Uncertainty Principle; Parseval Frame; Banach space

Online: 25 July 2023 (04:15:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1569.v1

Gravity as a Result of Symmetry between Matter Energy and Space Energy

Amrit Sorli, Štefan Čelan

Subject: Physical Sciences, Theoretical Physics Keywords: space; matter; symmetry; gravity; gravitational singularities

Online: 24 July 2023 (08:52:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1108.v1

High-Sensitivity Seismometer Development for Lunar Applications

Leandro De Paula, Ronald Norton, Ho Jung Paik, Nicholas Schmerr, Roger Williamson, Talso Chui, Hahn Inseob

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: lunar seismology; instrumentation; seismometer; planets; space

Online: 17 July 2023 (11:54:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0323.v6

The Morphology of the Active Galactic Nucleus and its Impact on Accretion Flows and Relativistic Jets

Mohammed Al-Fadhli

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Relativistic Jets; Conformal Space-time Background.

Online: 12 January 2023 (13:50:25 CET)

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The G2 gas cloud motion data and the scarcity of observations on the event horizon-scale distances have challenged the comprehensiveness of the central supermassive black hole model. In addition, the Planck Legacy 2018 release has preferred a positively curved early Universe with a confidence level higher than 99%. This study investigates the impact of the background curvature and its evolution over the conformal time on the formation and morphological evolution of central compact objects and the consequent effect on their host galaxies. The formation of a galaxy from the collapse of a supermassive gas cloud in the early Universe is modeled based on interaction field equations as a 4D relativistic cloud-world that flows and spins through a 4D conformal bulk of a primordial positive curvature considering the preference of the Planck release. Owing to the curved background, this scenario of galaxy formation reveals that the core of the galaxy undergoes a forced vortex formation with a central event horizon leading to opposite vortices (traversable wormholes) that spatially shrink while evolving in the conformal time. It indicates that the galaxy and its core are formed in the same process whereas the surrounding gas clouds form the spiral arms due to the frame-dragging induced by the fast-rotating core. It demonstrates that the accretion flow onto the central supermassive compact object only occurs at the central event horizon of the two opposite vortices while their other ends eject the relativistic jets. This can elucidate the relativistic jet formation and explain the G2 gas cloud motion if its orbit is around one of the vortices but at a distance from the central event horizon. The gravitational potential of the early curved bulk could contribute to galaxy formation while the present spatial flatness deprives the potential of bulk which could lead to galaxy quenching. The formation of a galaxy and its core simultaneously could explain the growth of the supermassive compact galaxy core to a mass of ~10⁹ M_⊙ at just 6% of the current Universe age.

Preprint ARTICLE | doi:10.20944/preprints202212.0402.v1

Cultural Space Methodology on Assessment of Authenticity of Indigenous Community Forest and Conservation Area in Indonesia

Rizqi Abdulharis, Susilo Kusdiwanggo, Ida Nurlinda, Gustaff Harriman Iskandar, Angga Dwiartama, Andri Hernandi, Teguh Purnama Sidiq

Subject: Social Sciences, Geography, Planning And Development Keywords: cultural space; indigenous community; Indonesia; methodology

Online: 21 December 2022 (11:53:49 CET)

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Indigenous knowledge is proven to be one of the foundations of sustainable land and marine management. While indigenous knowledge is acknowledged as of important factors on maintenance of biodiversity of the planet, it also ensures the sustenance of social and economic system of indigenous community. To facilitate the application of indigenous knowledge on management of customary forest in Indonesia, since 2012, the Government of Indonesia has been providing formal access for indigenous communities to their forests to maintain forest sustainability and to enhance the welfare of indigenous community. Nonetheless, the achievement of sustainable development goals in the scope of forest and conservation area management is threatened by various competing interests and power imbalance, which mostly leads to conversion of naturally vegetated area, as well as the inability of the community to integrate new economic opportunities to its institution. Moreover, the Government of Indonesia has not been regulating the involvement of indigenous community on the management of conservation area. Most importantly, such a program provides no reference on indigenous community, especially on the assessment of authenticity of indigenous community’s forest. Cultural space methodology may fill the aforementioned gaps. The methodology was developed based on the notion of cultural space and land administration, particularly the people-and-land/marine space relationship. Moreover, such a methodology was also constructed based on the experiences of agricultural and maritime communities in Indonesia on the administration of their territories. The methodology provides a procedure to convert information on the interrelation of indigenous community, its cultural space in forest and conservation area, and indigenous knowledge into geospatial information and data that represent the cultural space unit as a geographic feature. Therefore, such methodology may be utilised to assess the authenticity of a long-existing relationship between a community, especially an indigenous one, and its land, particularly that serves conservational function.

Preprint ARTICLE | doi:10.20944/preprints202209.0438.v1

Indefinite Halmos, Egervary and Sz.-Nagy Dilations

K. MAHESH KRISHNA

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Dilation; Indefinite inner product space; Module

Online: 29 September 2022 (02:48:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0348.v1

Novel State-Space Realization Generalized from Turbine Blade Modeling

Andrew van Paridon, Timothy Sands

Subject: Engineering, Mechanical Engineering Keywords: transfer function; state-space; realization; conversion

Online: 28 February 2022 (07:23:56 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0693.v1

Measuring and Evaluating the Quality of Urban Walkways from the Perspective of the Creative Urban Space

Ameneh Ekrasardashti, Hassan Sajadzadeh, Farshid Aram

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Urban walkways; Creative city, Urban Space

Online: 28 May 2021 (10:57:07 CEST)

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Working Paper ARTICLE

Biocosmology - Multiverse, Life, and Consciousness

Amrit Srecko Sorli, Štefan Čelan

Subject: Physical Sciences, Acoustics Keywords: cosmology, life, superfluid quantum space, consciousness.

Online: 15 April 2021 (13:38:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0727.v1

Art in Urban Spaces

Mehrdad Karimimoshaver, Bahare Eris, Farshid Aram, Amir Mosavi

Subject: Social Sciences, Anthropology Keywords: meaning; urban space; urban art; Tehran

Online: 30 March 2021 (10:48:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0676.v1

Conformal Symmetry and Supersymmetry in Rindler Space

J.W. Van Holten

Subject: Physical Sciences, Particle And Field Physics Keywords: Conformal field theory; supersymmetry; Rindler space

Online: 28 July 2020 (10:28:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0038.v1

Characterization of Caristi Type Mapping through its Absolute Derivative

Mohamad Muslikh, Adem Kilicman, Siti Hasana, Norfifah Bachok

Subject: Computer Science And Mathematics, Analysis Keywords: Fixed point theorem; Differentiation; Metric space

Online: 3 April 2018 (15:30:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0164.v1

Analysis of Dark Current in BRITE Nanostellite CCD Sensors

Adam Popowicz

Subject: Environmental And Earth Sciences, Space And Planetary Science Keywords: CCD defects; space telescopes; nano-satellites

Online: 18 January 2018 (04:31:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201612.0144.v1

Temporal Changes of Per Capita Green Space of Colombo District, Sri Lanka

Lin Li, Pgrni Pussella

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Green Space; NDVI; Per Capita; Urbanization

Online: 29 December 2016 (16:04:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints201607.0060.v1

The RadioAstron dedicated DiFX distribution

Gabriele Bruni, James M. Anderson, Walter Alef, Helge Rottmann, Andrei P. Lobanov, J. Anton Zensus

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: VLBI; Space-VLBI; Correlation; RadioAstron; AGN

Online: 19 July 2016 (04:54:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0004.v1

Quantum Space-Time Symmetries: A Principle of Minimum Group Representation

Norma SANCHEZ, Diego CIRILO-LOMBARDO

Subject: Physical Sciences, Theoretical Physics Keywords: quantum physics; space-time; symmetry; fundamental principle; minimal group representation; Metaplectic group; coherent states phase space

Online: 1 November 2023 (04:12:51 CET)

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We show that, as in the case of the principle of minimum action in classical and quantum mechanics, there exists an even more general principle in the very fundamental structure of quantum space-time: This is the principle of minimal group that allows to consistently and simultaneously obtain a natural description of the spacetime dynamics and the physical states admissible in it. The theoretical construction is based on the physical states that are average values of the generators of the Metaplectic group Mp(n) , the double covering of SL(2C) in a vector representation, with respect to the coherent states carrying the spin weight. Our main results here are: (i) There exists a connection between the dynamics given by the Metaplectic group symmetry generators and the physical states (mappings of the generators through bilinear combinations of the basic states). (ii) The ground states are coherent states of the Perelomov-Klauder type defined by the action of the Metaplectic group which divide the Hilbert space into even and odd states mutually orthogonal. They carry a spin weight 1/4 and 3/4 respectively from which, two other basic states can be formed. (iii) The physical states, mapped bilinearly with the basic 1/4 and 3/4 spin weight states, plus their symmetric and antisymmetric combinations, have spin contents s = 0, 1/2, 1, 3/2 and 2. (iv) The generators realized with the bosonic variables of the harmonic oscillator introduce a natural supersymmetry and a superspace whose line element is the geometrical Lagrangian of our model. (v) From the line element as operator level, a coherent physical state of spin 2 can be obtained and naturally related to the metric tensor. (vi) The metric tensor is naturally discretized by taking the discrete series given by the basic states (coherent states) in the n number representation, reaching the classical (continuous) space-time for n going to infinity. (vii) There emerges a relation between the eigenvalue of our coherent state metric solution and the black hole area (entropy) as A_{bh}/4 l_{p}^{2} = I alpha I relating the phase space of the metric found g_{ab} and the black hole area A_{bh} through the Planck length l_{p}^{2} and the eigenvalue I alpha I of the coherent states. As a consequence of the lowest level of the quantum discrete space-time spectrum, eg the ground state associated to n = 0 and its characteristic length, there exists a minimum entropy related to the black hole history.

Preprint ARTICLE | doi:10.20944/preprints202310.0285.v1

Trajectory Smoothing Planning of Delta Parallel Robot Combining Cartesian and Joint Space

Zhu Dachang, He Yonglong, Yu Xuezhe, Li Fangyi

Subject: Engineering, Mechanical Engineering Keywords: Delta parallel robot; kinematic and dynamic modelling; trajectory smoothing planning; combining Cartesian space with joint space

Online: 9 October 2023 (02:58:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1602.v1

The Convergence of Discrete Models for Nonlinear Schrödinger Equation in Dark Solitons Motion

Yazhuo Li, Qian Luo, Quandong Feng

Subject: Computer Science And Mathematics, Mathematics Keywords: Nonlinear schrödinger equation; Space discretization models; Time-space discretization models; Crank-Nicolson method; New-Difference method.

Online: 23 May 2023 (07:45:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0371.v1

Orthogonal Gyrodecompositions of Real Inner Product Gyrogroups

Milton Ferreira, Teerapong Suksumran

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: real inner product gyrogroup; orthogonal decomposition; gyroprojection; coset space; partitions; quotient space; gyrolines; cogyrolines; fiber bundles

Online: 23 May 2020 (10:32:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0371.v1

Dynamic Path in C⁴ Space-Time

Dimitris Mastoridis, K. Kalogirou

Subject: Physical Sciences, Mathematical Physics Keywords: dynamic path; ADM formalism; complex space-time; extended space-time; unied theories; geometric unication

Online: 19 September 2018 (08:30:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0114.v1

The TRAX Light-Rail Train Air Quality Observation Project

Daniel L. Mendoza, Erik T. Crosman, Logan E. Mitchell, Alexander Jacques, Benjamin Fasoli, Andrew M. Park, John C. Lin, John Horel

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: air quality; mobile observations; light rail; particulate matter; ozone; health outcomes; urban pollution; wildfires; air quality policy; environmental justice

Online: 10 November 2019 (14:36:21 CET)

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Observing air quality from sensors onboard light rail cars in Salt Lake County, Utah began as a pilot study in 2014 and has now evolved into a five-year state-funded program. This metropolitan region suffers from both elevated ozone levels during summer and high PM2.5 events during winter. Pollution episodes result predominantly from local anthropogenic emissions but are also impacted by regional transport of dust, chemical precursors to ozone, and wildfire smoke as well as being exacerbated by the topographical features surrounding the city. Two electric light-rail train cars from the Utah Transit Authority light-rail Transit Express (“TRAX”) system were outfitted with PM2.5 and ozone sensors to measure air quality at high spatial and temporal resolution in this region. Pollutant concentration data underwent quality control procedures to determine whether the train motion affected the readings and how the sensors compared against regulatory sensors. Quality assurance results from data obtained over the past year show that TRAX Observation Project sensors are reliable, which corroborates earlier preliminary validation work. Two case studies from summer 2019 are presented to illustrate the strength of the finely-resolved air quality observations: 1) an elevated ozone event and 2) elevated particulate pollution resulting from 4th of July fireworks. The mobile observations were able to capture spatial gradients as well as pollutant hotspots during both of these episodes. Sensors have been recently added to a third light rail train car, which travels on a north-south oriented rail line along which we were unable to monitor air quality previously. The TRAX Observation Project is currently being used to provide reliable pollutant data for health studies and inform urban planning efforts. Links to real-time data displays and updated information on the quality-controlled data from this study are available at https://atmos.utah.edu/air_quality/trax/.

Preprint ARTICLE | doi:10.20944/preprints202405.0112.v1

A 3D Numerical Model to Estimate Lightning Types for PyroCb Thundercloud

Surajit Das Barman, Rakibuzzaman Shah, Syed Islam, Apurv Kumar

Subject: Atmospheric Science And Meteorology, Environmental And Earth Sciences Keywords: cloud-to-ground lightning; lower positive charge structure; pyrocumulonimbus; surface charge density; tripole thundercloud

Online: 2 May 2024 (09:38:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1598.v1

Analysis of Dynamic Behavior of Multi-layer Soil Grounds Through 1 G Shaking Table Tests and Numerical Analysis

Yong Jin, Sugeun Jeong, Minseo Moon, Daehyeon Kim

Subject: Civil Engineering, Engineering Keywords: ground; seismic; dynamic behavior; response; 1 g shaking table; numerical analysis; multi-layered; amplification

Online: 24 April 2024 (10:02:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1097.v1

Characterizing Dissolved Organic Matter and Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Sample Classification within the Carbon Cycle Context

Petr Semenov, Anfisa Pismeniuk, Anna Kil, Elizaveta Shatrova, Natalia Belova, Petr Gromov, Sergei Malyshev, Wei He, Anastasiia Lodochnikova, Ilya Tarasevich, Irina Streletskaya, Marina Leibman

Subject: Environmental And Earth Sciences, Other Keywords: ground ice, dissolved organic matter, excitation-emission matrix fluorimetry, biogeochemical cycling, greenhouse gas emission

Online: 14 December 2023 (11:29:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0287.v1

Two Circumpolar Ground Beetle Species (Coleoptera: Carabidae) Were in Hokkaido, Japan in the Late Last Glacial Period

Shigehiko Shiyake

Subject: Biology And Life Sciences, Insect Science Keywords: Diacheila polita; Elaphrus lapponicus; ground beetles; forest tundra; fossil; Hokkaido; Last Glacial period; paleoenvironment

Online: 6 November 2023 (07:34:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0738.v1

Adaptive Terrain Perception and Decision-Making Systems for Agile Mobile Robots in Dynamic Search and Rescue Scenarios

Sobers Francis, Tanmoy Dam, Sreenatha Anavatti, Matthew A Garratt

Subject: Engineering, Other Keywords: Navigation System Design; TerraWave Classifier; Dynamic Path planning; ROS Navigation; Autonomous Ground Vehicle (AGV)

Online: 13 October 2023 (03:52:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0395.v1

Novel Grafted Hydrogel for Iron and Ammonia Removal from Ground Water, Synthesis and Computational Chemistry Study

Hanafy M. Abd El-Salam, Ali El Shafey, Mahmoud K. Abdel-Latif

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Grafted hydrogel; Ground water; Ammonia and Iron removal efficiency; DFT and MEP; binding Energy

Online: 4 August 2023 (11:32:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0987.v1

Certainty Over Uncertainty: A Search for an Endemic Amphibia in Indo-Burma Hotspot Guided by a Predictive Distribution Modeling Approach

Samrat Sengupta, Subhasish Arandhara, Bhaskar Saikia

Subject: Biology And Life Sciences, Life Sciences Keywords: Maximum Entropy; species distribution model; ground validation; endemic; tree-frog; Protected Area; Biodiversity Hotspot

Online: 15 May 2023 (07:19:47 CEST)

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Conservation of tropical endemic amphibians largely suffers from Wallacean shortfall, a gap to which predictive species distribution models have contributed significantly to bridge by delineating probable distribution and the underlying suitable habitat within their distributional range. However, rarely is a prediction model ground-truthed to evaluate their predictive performance. Here we present a species distribution modeling approach using maximum entropy algorithm corrected for smaller sample size, in guiding explorative surveys aimed at optimizing survey effort and discovering unrecorded populations of Zhangixalus suffry, a rhacophorid tree-frog endemic to the northeastern part of the Indian subcontinent along with the factors limiting their distribution. With only 16 established historical locality data to model for (after spatial thinning to reduce autocorrelation) and a set of environmental predictors (climatic, topographic, and landscape composition), our model prediction enabled the successful discovery of seven new population records from unreported landscapes, extending its southernmost distributional limit over a considerable distance. The final composite distribution model combining all the locality records (n=23) predicted similar core areas of suitable habitat consistent with the known geographic distribution of the species but showed poor representation under existing coverage of Protected Area (PA) network in the Region with only 7% representation of suitable habitat under protection. Habitat suitability of a site was significantly governed by factors related to precipitation (precipitation seasonality and precipitation of the warmest quarter) and topographic factors that can influence it (elevation and aspect). This corroborates with the known ecology of Rhacophorid frogs, especially concerning their seasonal explosive reproductive strategy and foam nest-building behavior.Through this study, we propose explorative surveys guided by species distribution models to expedite unknown population discovery of rare, tropical endemic amphibians and using such taxa as surrogates in identifying conservation priority zones that can be directly applied to reserve design and conservation and management planning.

Preprint ARTICLE | doi:10.20944/preprints202304.1048.v1

Optimization of Airplane Landing in Crosswind Conditions for Minimum Tire Wear

Stefano Cacciola, Carlo E.D. Riboldi, Edoardo Generali

Subject: Engineering, Aerospace Engineering Keywords: Landing; Flight simulation; Tire wear; Optimization; Crosswind; Nonlinear flight dynamics; Trim; Ground-contact detection

Online: 27 April 2023 (05:19:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0162.v1

Pulmonary Recruitment Prior to One-Stage Multiple Pulmonary Ground Glass Nodule Localization Increases Localization Accuracy

Yu Hsiang Wang, Pei Chin Su, Kenneth Au, Hsu Chih Huang, Frank Cheau-Feng Lin, Chih-Yi Chen, Ming Chih Chou, Jiun Yi Hsia

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Hybrid computer tomography; pulmonary ground glass nodule localization; video-assisted thoracic surgery; pulmonary recruitment

Online: 10 April 2023 (09:30:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0030.v2

Influence of the Angle of Seismic Incidence of Long-Period Pulse-like Ground Motion on an Irregular Base-Isolated Building

Kenji Fujii

Subject: Engineering, Civil Engineering Keywords: base-isolated building, irregularity, angle of seismic incidence, pulse-like ground motion, energy input

Online: 29 September 2022 (03:20:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0545.v3

Evaluation of High-Resolution Satellite-Derived Solar Radiation Data for PV Performance Simulation in East Africa

Diane Palmer, Richard Blanchard

Subject: Engineering, Energy And Fuel Technology Keywords: Solar radiation; Satellite-derived irradiance; Global Horizontal Irradiance; Clear sky model; ground stations; validation

Online: 18 March 2021 (14:30:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0799.v1

Airport Ground Handling Services Equipment Purchase Decision Model with AHP Weighted

Tao Yu-Jwo, Lee Hsuan-Shih, Tu Chang-Shu

Subject: Business, Economics And Management, Accounting And Taxation Keywords: Airport ground handling services; equipment purchase decision, AHP weighted; Membership function; fuzzy linear programming

Online: 31 December 2020 (12:29:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0032.v1

SU(2) Quantum Yang-Mills Thermodynamics: Some Theory and Some Applications

Ralf Hofmann

Subject: Physical Sciences, Quantum Science And Technology Keywords: calorons, thermal ground state, wave-particle duality, cosmological model, local-global discrepancy in H0

Online: 2 October 2018 (16:17:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201706.0056.v1

Characterisation of Hydrological Response to Rainfall at Multi Spatio-Temporal Scales in Savannas of Semi-Arid Australia

Ben Jarihani, Roy C. Sidle, Rebecca Bartley, Christian H. Roth, Scott Wilkinson

Subject: Environmental And Earth Sciences, Environmental Science Keywords: rainfall-runoff; rainfall variability; Hortonian overland flow; saturation overland flow; ground cover; Burdekin catchment

Online: 13 June 2017 (05:04:48 CEST)

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Rainfall is the main driver of hydrological processes in dryland environments and characterising the rainfall variability and processes of runoff generation are critical for understanding ecosystem function of catchments. Using remote sensing and in situ data sets, we assess the spatial and temporal variability of the rainfall, rainfall-runoff response, and effects of antecedent soil moisture and ground cover at different spatial scales on runoff coefficients in the Upper Burdekin catchment, northeast Australia, which is a major contributor of sediment and nutrients to the Great Barrier Reef. The high temporal and spatial variability of rainfall exerts significant controls on runoff generation processes. Rainfall amount and intensity are the primary runoff controls, and runoff coefficients for wet antecedent conditions were higher than for dry conditions. The majority of runoff occurred via surface runoff generation mechanisms, with subsurface runoff likely contributing little runoff due to the intense nature of rainfall events. At annual to seasonal temporal scales and for relatively large catchments, we could not detect a significant effect of ground cover on runoff. We conclude that in the range of moderate to large catchments (193 – 36,260 km²) runoff generation processes are sensitive to both antecedent soil moisture and ground cover. A higher runoff-ground cover correlation in drier months with sparse ground cover highlighted the critical role of cover at the onset of the wet season and how runoff generation is more sensitive to cover in drier months than in wetter months. The monthly water balance analysis indicates that runoff generation in wetter months (January and February) is partially influenced by saturation overland flow, most likely confined to saturated soils in riparian corridors, swales, and areas of shallow soil. By March and continuing through October, the soil ‘bucket’ progressively empties by evapotranspiration, and Hortonian overland flow becomes the dominant, if not exclusive, flow generation process. The results of this study can be used to better understand the rainfall-runoff relationships in dryland environments and subsequent exposure of coral reef ecosystems in Australia and elsewhere to terrestrial runoff.

Preprint ARTICLE | doi:10.20944/preprints202404.0782.v1

Designing Retirement Strategies for Coal-Fired Power Plants to Mitigate Air Pollution and Health Impacts

Carla Campos, Emily L. Pakhtigian, Wei Peng, Joel R. Landry, Hannah Wiseman, An T. Pham

Subject: Environmental And Earth Sciences, Pollution Keywords: coal retirement; air quality; human health; environmental justice

Online: 11 April 2024 (07:43:21 CEST)

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Preprint REVIEW | doi:10.20944/preprints202403.0216.v1

Human Health Impacts of Urban Air Pollution in Cameroon

Angyiba Serge Andigema, NGNOTOUOM NGNOKAM Tania Cyrielle

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: Cameroon; Air pollution; Urbanization; Health impacts; Government measures

Online: 5 March 2024 (06:39:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0386.v2

Factors for Occupational Exposure to Ultrafine Particles in Different Sectors of Activity

Fernando Moreira, Ana Ferreira, Nelson Barros

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Ultrafine Particles; Air Quality; Occupational Health; UFP ;

Online: 30 January 2024 (04:07:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1361.v1

Radon as Environment Diagnostic Tool and Global Electric Circuit Component

Sergey Pulinets, Irina Mironova, Petr Miklyaev, Tatiana Petrova, Alexander Shitov, Arseniy Karagodin

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: radon; air ionization; global electric circuit; gamma spectrometer

Online: 18 January 2024 (10:30:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.2000.v1

A Simple Inexpensive Alkaline Method for DNA Extraction from Environmental Samples for PCR Surveillance

Abdulkarim Shwani, Bin Zuo, Adnan Alrubaye, Jiangchao Zhao, Douglas Duane Rhoads

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: microbiome; bacteria; DNA extraction; poultry; swine; air sampling

Online: 30 November 2023 (15:40:03 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.1682.v1

Electrospun Membrane for Media Filters: A Review

Raul Pirolli Da Silva, Edvani Curti Muniz, Gabriela Brunosi Medeiros, Monica Lopes Aguiar, Elisangela Corradini

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Air Filter; Electrospinning; Polymeric Solutions; Polymeric Membrane; Fibers

Online: 27 November 2023 (11:34:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0814.v1

The Green Cool Factor: Eco-Innovative HVAC Solutions in Building Design

Bashar Mahmood Ali, Mehmet AKKAŞ

Subject: Engineering, Control And Systems Engineering Keywords: HVAC; thermal comfort; green buildings; outdoor air conditioning

Online: 13 November 2023 (11:26:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0407.v1

Air Mass Flow and Pressure Optimisation of a Pem Fuel Cell Hybrid System for a Forklift Application

Gojmir Radica, Ivan Tolj, Mykhaylo Lototskyy, Sivakumar Pasupathi

Subject: Engineering, Mechanical Engineering Keywords: Air mass flow; pressure; optimization; PEM fuel cell

Online: 7 November 2023 (10:32:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.2108.v1

Epiphytic Subaerial Algae as Biological Indicators of Air Pollutants in Bangkok, Thailand

Santi Saraphol, Fabio Rindi, Nuttha Sanevas

Subject: Biology And Life Sciences, Life Sciences Keywords: bioindicator; air pollution; epiphytic subaerial algae; metagenomics; Bangkok

Online: 1 November 2023 (09:51:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.1848.v1

A Study on the Simulation and Experiment of Evaporative Condensers in an R744 Air Conditioning System

Thanhtrung Dang, Hoangtuan Nguyen

Subject: Engineering, Mechanical Engineering Keywords: evaporative condenser; R744; subcritical; pressure drop; air conditioning

Online: 29 August 2023 (04:23:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0103.v1

Long Range Transport Analysis Based on Eastern Atmospheric Circulation and Its Impact to the Dust Event over Moldavia, Romania in August 2022

Diana Corina Bostan, Ingrid Mihaela Miclăuș, Cosmina Apetroaie, Mirela Voiculescu, Adrian Timofte, Marius Mihai Cazacu

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: dust transport; air pollution; eastern atmospheric circulation; aerosols

Online: 2 August 2023 (02:31:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.2113.v1

Aerodynamic Characteristics of Different Heights Buildings in Close Proximity

Orest Voznyak, Edyta Dudkiewicz, Nadiia Spodyniuk, Oleksandr Dovbush, Iryna Sukholova, Olena Savchenko, Mariana Kasynets

Subject: Engineering, Civil Engineering Keywords: Natural ventilation; Wind tunnel; Air pressure; Aerodynamic coefficients.

Online: 29 June 2023 (11:14:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0136.v1

The Relationship Between PM2.5 and Health Vulnerability in Argentina

Manuela Bullo, Gabriela Lakkis, Martin Pustilnik, Juan Ignacio Bonfiglio, Ricardo Di Pasquale, Luciana Marisol Gonzalez, Gabriela Gonzalez-Aleman, Maria Cristina Lamas, Agustin Salvia, Martín Langsam, Tomás Olego, Valentín Starosta, And Santiago Perez-Lloret

Subject: Environmental And Earth Sciences, Pollution Keywords: PM2.5; health vulnerability; air quality; map; public source

Online: 3 May 2023 (10:47:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0295.v1

The Cornea and the Oxygen of the Atmosphere

Arturo Solis Herrera, Paola E. Solís Arias

Subject: Medicine And Pharmacology, Ophthalmology Keywords: Air; cornea; epithelium; interphase; metabolism; oxygen; precorneal film

Online: 16 March 2023 (02:43:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0289.v1

Seasonal Distribution of AOT and Its Relationship with Air Pollutants in Central Bangladesh Using Remote Sensing and Machine Learning Tools

Md. Shareful Hassan, Reeju F. L. Gomes, Mohammad Amir Hossain Bhuiyan, Muhammad Tauhidur Rahman

Subject: Environmental And Earth Sciences, Environmental Science Keywords: AOT; Bangladesh; Air pollution; Machine Learning; Remote Sensing

Online: 15 March 2023 (15:22:04 CET)

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Preprint REVIEW | doi:10.20944/preprints202206.0056.v1

The Current Status of Cigarette Smoking and Air Pollution Associated Lung Cancer

Fayang Ma

Subject: Medicine And Pharmacology, Obstetrics And Gynaecology Keywords: lung cancer; cigarette smoking; air pollution; epidemiology; etiology

Online: 6 June 2022 (03:51:38 CEST)

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Preprint REVIEW | doi:10.20944/preprints202110.0002.v1

Air Pollution Exposure as a Relevant Risk Factor for COPD Exacerbations in Male and Female Patients

Miguel Enrique Silva Rodriguez, Patricia Silveyra

Subject: Medicine And Pharmacology, Pharmacology And Toxicology Keywords: COPD exacerbation; air pollution; hospital admission; sex differences

Online: 1 October 2021 (10:02:16 CEST)

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Working Paper ARTICLE

Prenatal Particulate Matter Exposure is Associated with Childhood Saliva DNA Methylation

Kelly M. Bakulski, Jonah D. Fisher, John F. Dou, Arianna Gard, Lisa Schneper, Daniel A. Notterman, Erin B. Ware, Colter Mitchell

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: DNA methylation; air pollution; particulate matter; saliva; biomarker

Online: 2 August 2021 (09:04:00 CEST)

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Background: Exposure in utero to particulate matter (PM2.5 and PM10) is associated with maladaptive health outcomes. Although exposure to prenatal PM2.5 and PM10 have cord blood DNA methylation signatures at birth, signature persistence into childhood and saliva cross-tissue applicability has not been tested. Methods: In the Fragile Families and Child Wellbeing Study, a United States 20-city birth cohort, average residential PM2.5 and PM10 during pregnancy was estimated using air quality monitors with inverse distance weighting. Saliva DNA methylation at ages 9 (n=749) and 15 (n=793) was measured using the Illumina HumanMethylation 450k BeadArray. Cumulative DNA methylation scores for particulate matter were estimated by weighting participant DNA methylation at each site by meta-analysis effect estimates from Gruzieva et al. 2019 and standardizing the sums. Using mixed effects regression analysis, we tested the associations between cumulative DNA methylation scores at ages 9 and 15 and PM exposure during pregnancy, adjusted for child sex, age, race/ethnicity, maternal income to needs ratio, nonmartial birth status, and saliva cell type proportions. Results: Our study sample was 50.5% male, 56.3% non-Hispanic Black, and 19.8% Hispanic, with median income to needs ratio of 1.4. In the third trimester, mean PM2.5 exposure levels were 27.9 ug/m3/day (standard deviation: 7.0, 23.7% of observations exceeded safety standards) and PM10 were 15.0 ug/m3/day (standard deviation: 3.1). An interquartile range increase in PM2.5 exposure (10.73 g/m3/day) was associated with -0.0287 standard deviation lower cumulative DNA methylation score for PM2.5 (95% CI: -0.0732, 0.0158, p=0.20) across all participants. An interquartile range increase in PM10 exposure (3.20 g/m3/day) was associated with -0.1472 standard deviation lower cumulative DNA methylation score for PM10 (95% CI: -0.3038, 0.0095, p=0.06) across all participants. The PM10 findings were driven by the age 15 subset where an interquartile range increase in PM10 exposure was associated with -0.024 standard deviation lower cumulative DNA methylation score for PM10 (95% CI: -0.043, -0.005, p=0.012). Findings were robust to adjustment for PM exposure at ages 1 and 3. Conclusion: In utero PM10 associated DNA methylation differences persist until age 15 and can be detected in saliva. Benchmarking the persistence and cell type generalizability is critical for epigenetic exposure biomarker assessment.

Preprint ARTICLE | doi:10.20944/preprints202106.0604.v1

Analysis of Air Quality by Ventilation in House in the Framework of the COVID-19 Pandemic: The Case of Spain

Patricia Aguilera-Benito, Carolina Piña-Ramirez, Giacomo Viccione, Ester Lepore

Subject: Engineering, Civil Engineering Keywords: ventilation; indoor air quality; COVID-19; aerosols; Spain

Online: 24 June 2021 (12:02:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0164.v1

Into Thinner Air: The Pliocene Demise of the Giant Volant Birds

Alan Cannell

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Pelagornithidae; Teratornithidae; takeoff airspeed; paleo-air density; extinction

Online: 4 March 2021 (14:12:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0028.v1

Examining the Potential Impacts of Air Pollution on China’s Inbound Tourism: The Case of Beijing and Shanghai

Xu Ni, Hongqing Ma

Subject: Business, Economics And Management, Accounting And Taxation Keywords: air pollution; inbound tourism; tourist arrivals; tourism receipts

Online: 1 March 2021 (14:12:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0317.v1

Characterizing the Performance of a Compact BTEX GC-PID for Near-Real Time Analysis and Field Deployment

Isis Frausto-Vicencio, Alondra Moreno, Hugh Goldsmith, Ying-Kuang Hsu, Francesca M. Hopkins

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: BTEX; Benzene; Air Toxics, Gas Chromatography; Traffic Emissions

Online: 15 February 2021 (16:02:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0081.v1

Effect of Air Pollution from Pedestrian Traffic in An Open Market: A Case Study of Bodija Market

Oluyemisi Joy Oladejo, Timothy Oluseyi Odeyale, Bukola Adiamo

Subject: Arts And Humanities, Architecture Keywords: air pollution; particulate; PM2.5; open market; pedestrian traffic

Online: 4 August 2020 (08:20:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202007.0521.v2

Recent Advances in Acoustic Metamaterials for Simultaneous Sound Attenuation and Air Ventilation Performances

Sanjay Kumar, Heow Pueh Lee

Subject: Physical Sciences, Acoustics Keywords: acoustic metamaterials; Sound attenuation; Air ventilation; Acoustic resonance

Online: 27 July 2020 (11:51:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0062.v1

Air Transportation Income and Price Elasticities in Remote Areas: The Case of Brazilian Amazon Region

Rodrigo Vieira Ventura, Manoela Cabo, Rafael Caixeta, Elton Fernandes, Vicente A. Fernandes

Subject: Business, Economics And Management, Marketing Keywords: Air transportation; Brazilian Amazon; Demand; Elasticity; Isolated cities

Online: 5 July 2020 (10:26:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0086.v1

Using Smart City Tools to Evaluate the Effectiveness of a Low Emissions Zone in Spain: Madrid Central

Irene Lebrusán, Jamal Toutouh

Subject: Environmental And Earth Sciences, Environmental Science Keywords: air pollution; noise pollution; low emissions zone; pedestrianization

Online: 5 May 2020 (15:36:00 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202003.0364.v1

The Effects of Outdoor Air Pollution Concentrations and Lockdowns on Covid-19 Infections in Wuhan and Other Provincial Capitals in China

Yang Han, Jacqueline CK Lam, Victor OK Li, Peiyang Guo, Qi Zhang, Andong Wang, Jon Crowcroft, Shanshan Wang, Jinqi Fu, Zafar Gilani, Jocelyn Downey

Subject: Environmental And Earth Sciences, Pollution Keywords: Covid-19; infection rate; air pollution; lockdown; China

Online: 24 March 2020 (14:54:49 CET)

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Background: Covid-19 was first reported in Wuhan, China in Dec 2019. Since then, it has been transmitted rapidly in China and the rest of the world. While Covid-19 transmission rate has been declining in China, it is increasing exponentially in Europe and America. Although there are numerous studies examining Covid-19 infection, including an archived paper looking into the meteorological effect, the role of outdoor air pollution has yet to be explored rigorously. It has been shown that air pollution will weaken the immune system, and increase the rate of respiratory virus infection. We postulate that outdoor air pollution concentrations will have a negative effect on Covid-19 infections in China, whilst lockdowns, characterized by strong social distancing and home isolation measures, will help to moderate such negative effect. Methods: We will collect the number of daily confirmed Covid-19 cases in 31 provincial capital cities in China during the period of 1 Dec 2019 to 20 Mar 2020 (from a popular Chinese online platform which aggregates all cases reported by the Chinese national/provincial health authorities). We will also collect daily air pollution and meteorology data at the city-level (from the Chinese National Environmental Monitoring Center and the US National Climatic Data Center), daily inter-city migration flows and intra-city movements (from Baidu). City-level demographics including age distribution and gender, education, and median household income can be obtained from the statistical yearbooks. City-level co-morbidity indicators including rates of chronic disease and co-infection can be obtained from related research articles. A regression model is developed to model the relationship between the infection rate of Covid-19 (number of confirmed cases/population at the city level) and outdoor air pollution at the city level, after taking into account confounding factors such as meteorology, inter- and intra-city movements, demographics, and co-morbidity and co-infection rates. In particular, we shall study how air pollution affects infection rates across different cities, including Wuhan. Our model will also study air pollution would affect infection rates in Wuhan before and after the lockdown. Expected findings: We expect there be a correlation between Covid-19 infection rate and outdoor air pollution. We also expect that reduced intra-city movement after the lockdowns in Wuhan and the rest of China will play an important role in reducing the infection rate. Interpretation: Infection rate is growing exponentially in major cities worldwide. We expect Covid-19 infection rate is related to the air pollution concentration, and is strongly dependent on inter- and intra-city movements. To reduce the infection rate, the international community may deploy effective air pollution reduction plans and social distancing policies.

Preprint ARTICLE | doi:10.20944/preprints201812.0099.v1

A Comparison of Ethylene Tar-Derived Isotropic Pitches Prepared by Air Blowing and Nitrogen Distillation Method and Their Carbon Fibers

Kui Shi, Jianxiao Yang, Chong Ye, Hongbo Liu, Xuanke Li

Subject: Chemistry And Materials Science, Other Keywords: Carbon fiber; ethylene tar; isotropic pitch; air blowing

Online: 10 December 2018 (11:54:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0008.v1

Formation of Secondary Organic Aerosols by Germicidal Ultraviolet Light

Eureka Choi, Zhongchao Tan, William A. Anderson

Subject: Physical Sciences, Optics And Photonics Keywords: fine particulate; PM2.5; UV disinfection; indoor air quality

Online: 3 December 2018 (05:15:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0306.v1

Risk Assessment of BTEX Concentration from Combustion of Coal in a Controlled Laboratory Environment

Daniel Masekameni, Raeesa Moolla, Mary Gulumian, Derk Brouwer

Subject: Environmental And Earth Sciences, Environmental Science Keywords: coal; BTEX; hazardous air pollutants; domestic fuel burning

Online: 13 November 2018 (09:59:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0468.v1

New “Smart” Systems for Atmospheric Aerosol and Reactive Gas Sampling in Ambient Air

Paolo Cristofanelli, Maurizio Busetto, Enrico Ronchi, Paolo Miatto, Angela Marinoni, Francescopiero Calzolari, Paolo Bonasoni, Luca Tagliafico

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: reactive gases; atmospheric aerosol; air sampling; smart technologies

Online: 24 September 2018 (16:47:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0215.v1

Health Risks Associated with Occupational Exposure to Ambient Air Pollution in Commercial Drivers: a Systematic Review

Herve Lawin, Lucie Ayi Fanou, Antoine Vikkey Hinson, Marie Stolbrink, Parfait Houngbegnon, Marius Kedote, Benjamin Fayomi, Jacqueline Kagima, Patrick Katoto, Edgard Marius Dona Ouendo, Kevin Mortimer

Subject: Medicine And Pharmacology, Other Keywords: Air pollution; Health risk; Driving; Automobile; Bus; Motorcycle

Online: 12 August 2018 (19:35:44 CEST)

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Preprint ESSAY | doi:10.20944/preprints201703.0064.v1

Moss Bag Preparation: A Low-Cost Technique in Monitoring Airborne Particulate and Toxic Elements

Francis Olawale Abulude, Jamok Jacob Elisha

Subject: Environmental And Earth Sciences, Environmental Science Keywords: air pollution; mosses; low-cost; equipment; time-consuming

Online: 13 March 2017 (09:28:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201609.0087.v1

Experimental Study of the Feasibility of Air Flooding in an Ultra-Low Permeability Reservoir

Guohui Qu, Yuanlin Meng, Anqi Shen, Yuxin Guo, Yikun Liu, Yonghang Tao

Subject: Engineering, Energy And Fuel Technology Keywords: air flooding; ARC; extra-low permeable reservoir; feasibility

Online: 26 September 2016 (09:03:03 CEST)

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