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  1. Article ; Online: Transmission of SARS-CoV-2 through the air.

    Thaper, Ravinder

    Current medicine research and practice

    2020  Volume 10, Issue 4, Page(s) 196–197

    Keywords covid19
    Language English
    Publishing date 2020-07-18
    Publishing country India
    Document type Journal Article
    ISSN 2352-0825
    ISSN (online) 2352-0825
    DOI 10.1016/j.cmrp.2020.07.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Food safety amid coronavirus disease 2019

    Ravinder Thaper

    Current Medicine Research and Practice, Vol 10, Iss 6, Pp 305-

    2020  Volume 307

    Keywords Medicine ; R
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: SARS-CoV-2 transmission through air

    Thaper, Ravinder

    Current Medicine Research and Practice ; ISSN 2352-0817

    2020  

    Keywords covid19
    Language English
    Publisher Medknow
    Publishing country in
    Document type Article ; Online
    DOI 10.1016/j.cmrp.2020.07.005
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Deactivation of severe acute respiratory syndrome coronavirus-2 with resonant frequency

    Ravinder Thaper / Brendan Fagen

    Current Medicine Research and Practice, Vol 11, Iss 3, Pp 156-

    2021  Volume 158

    Keywords Medicine ; R
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Decontamination of respirators amid shortages due to SARS-CoV-2.

    Thaper, Ravinder / Fagen, Brendan / Oh, Jonghwa

    Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

    2021  Volume 20, Issue 7, Page(s) 955–965

    Abstract: The pandemic created by SARS-CoV-2 has caused a shortage in the supplies of N95 filtering facepiece respirators (FFRs), disposable respirators with at least 95% efficiency to remove non-oily airborne particles, due to increasing cases all over the world. ...

    Abstract The pandemic created by SARS-CoV-2 has caused a shortage in the supplies of N95 filtering facepiece respirators (FFRs), disposable respirators with at least 95% efficiency to remove non-oily airborne particles, due to increasing cases all over the world. The current article reviewed various possible decontamination methods for FFR reuse including ultraviolet germicidal irradiation (UVGI), hydrogen peroxide vapor (HPV), microwave-generated steam (MGS), hydrogen peroxide gas plasma (HPGP), and 70% or higher ethanol solution. HPV decontamination was effective against bacterial spores (6 log
    MeSH term(s) Bacteria/drug effects ; Bacteria/isolation & purification ; Bacteria/radiation effects ; COVID-19/epidemiology ; Decontamination/methods ; Disinfection/methods ; Ethanol/pharmacology ; Humans ; Hydrogen Peroxide/pharmacology ; Microwaves ; N95 Respirators/microbiology ; N95 Respirators/virology ; Ultraviolet Rays ; Viruses/drug effects ; Viruses/isolation & purification ; Viruses/radiation effects
    Chemical Substances Ethanol (3K9958V90M) ; Hydrogen Peroxide (BBX060AN9V)
    Language English
    Publishing date 2021-06-12
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2072584-X
    ISSN 1474-9092 ; 1474-905X
    ISSN (online) 1474-9092
    ISSN 1474-905X
    DOI 10.1007/s43630-021-00064-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: The Combined Impact of Hand-Arm Vibration and Noise Exposure on Hearing Sensitivity of Agricultural/Forestry Workers-A Systematic Literature Review.

    Thaper, Ravinder / Sesek, Richard / Garnett, Richard / Acosta-Sojo, Yadrianna / Purdy, Gregory T

    International journal of environmental research and public health

    2023  Volume 20, Issue 5

    Abstract: Hand-arm vibration (HAV), which potentially causes vibration white finger (VWF), and occupational noise are serious issues in the agricultural and forestry industries. Generally, agricultural workers operate as single-family/small businesses and thus are ...

    Abstract Hand-arm vibration (HAV), which potentially causes vibration white finger (VWF), and occupational noise are serious issues in the agricultural and forestry industries. Generally, agricultural workers operate as single-family/small businesses and thus are exempted from Occupational Safety and Health Administration (OSHA) regulations/laws for noise and HAV otherwise applicable to other industries in general. The agricultural/forestry sectors are at increased risk as working hours are longer than a typical 8-h work shift putting them at greater risk of hearing loss. The study was conducted to assess the possible association between hearing sensitivity on combined exposure to noise and hand-arm vibration. A systematic literature review was conducted on exposure to noise and HAV in the agricultural/forestry sector and the resulting impacts on hearing. The peer-reviewed articles in English were searched with 14 search words in three databases of PubMed, Ergo Abstracts, and Web of Science without any filter for the year for fully available article text. The database literature search resulted in 72 articles. Forty-seven (47) articles met the search criteria based on the title. Abstracts were then reviewed for any relationship between hearing loss and hand-arm vibration/Raynaud's phenomenon/VWF. This left 18 articles. It was found that most agricultural workers and chainsaw workers are exposed to noise and VWF. Hearing is impacted by both noise and aging. The workers exposed to HAV and noise had greater hearing loss than non-exposed workers, possibly due to the additive effect on temporary threshold shift (TTS). It was found that VWF might be associated with vasospasm in the cochlea through autonomous vascular reflexes, digital arteries narrowing, vasoconstriction in the inner ear by noise, ischemic damage to the hair cells and increased oxygen demand, which significantly affects the correlation between VWF and hearing loss.
    MeSH term(s) Humans ; Forestry ; Occupational Diseases/etiology ; Vibration/adverse effects ; Farmers ; von Willebrand Factor ; Hearing Loss/complications ; Deafness/complications ; Hearing ; Occupational Exposure/adverse effects
    Chemical Substances von Willebrand Factor
    Language English
    Publishing date 2023-02-28
    Publishing country Switzerland
    Document type Systematic Review ; Journal Article ; Review
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph20054276
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The Combined Impact of Hand-Arm Vibration and Noise Exposure on Hearing Sensitivity of Agricultural/Forestry Workers—A Systematic Literature Review

    Ravinder Thaper / Richard Sesek / Richard Garnett / Yadrianna Acosta-Sojo / Gregory T. Purdy

    International Journal of Environmental Research and Public Health, Vol 20, Iss 4276, p

    2023  Volume 4276

    Abstract: Hand-arm vibration (HAV), which potentially causes vibration white finger (VWF), and occupational noise are serious issues in the agricultural and forestry industries. Generally, agricultural workers operate as single-family/small businesses and thus are ...

    Abstract Hand-arm vibration (HAV), which potentially causes vibration white finger (VWF), and occupational noise are serious issues in the agricultural and forestry industries. Generally, agricultural workers operate as single-family/small businesses and thus are exempted from Occupational Safety and Health Administration (OSHA) regulations/laws for noise and HAV otherwise applicable to other industries in general. The agricultural/forestry sectors are at increased risk as working hours are longer than a typical 8-h work shift putting them at greater risk of hearing loss. The study was conducted to assess the possible association between hearing sensitivity on combined exposure to noise and hand-arm vibration. A systematic literature review was conducted on exposure to noise and HAV in the agricultural/forestry sector and the resulting impacts on hearing. The peer-reviewed articles in English were searched with 14 search words in three databases of PubMed, Ergo Abstracts, and Web of Science without any filter for the year for fully available article text. The database literature search resulted in 72 articles. Forty-seven (47) articles met the search criteria based on the title. Abstracts were then reviewed for any relationship between hearing loss and hand-arm vibration/Raynaud’s phenomenon/VWF. This left 18 articles. It was found that most agricultural workers and chainsaw workers are exposed to noise and VWF. Hearing is impacted by both noise and aging. The workers exposed to HAV and noise had greater hearing loss than non-exposed workers, possibly due to the additive effect on temporary threshold shift (TTS). It was found that VWF might be associated with vasospasm in the cochlea through autonomous vascular reflexes, digital arteries narrowing, vasoconstriction in the inner ear by noise, ischemic damage to the hair cells and increased oxygen demand, which significantly affects the correlation between VWF and hearing loss.
    Keywords hand arm vibration ; noise exposure ; hearing loss ; chainsaw ; forestry workers ; threshold shift ; Medicine ; R
    Subject code 333 ; 390
    Language English
    Publishing date 2023-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Potential of fertilizer segregation during application using spinner disc spreader

    Thaper, Ravinder K. / Fulton, John P. / McDonald, Timothy P. / Fasina, Oladiran O.

    Precision agriculture. 2022 Feb., v. 23, no. 1

    2022  

    Abstract: Granular blended fertilizers are commonly applied using spinner disc spreaders in the U.S. with recent advances including wider spreads. Today, uniformity of spread is important as growers and custom applicators attempt to implement site-specific ... ...

    Abstract Granular blended fertilizers are commonly applied using spinner disc spreaders in the U.S. with recent advances including wider spreads. Today, uniformity of spread is important as growers and custom applicators attempt to implement site-specific management and utilize global navigation satellite systems (GNSS)-based guidance systems which permit equipment to follow the same field traverses over time. However, the variation in physical properties of nitrogen-N, phosphorous-P and potassium-K components of blended fertilizers make it difficult to spread them uniformly, leading to segregation. Segregation negatively impacts precision application. Therefore, an investigation was conducted to understand the potential of fertilizer segregation during application with a spinner disc spreader. A series of standard pan tests were carried out for evaluating nutrient distribution for a blended fertilizer (10–26–26). Treatments included two feed rates (224 and 448 kg ha⁻¹) and three spinner disc speeds (600, 700 and 800 rpm). The results indicated that application of the blended fertilizer resulted in non-uniform spread of the nutrients. Distinct nutrient patterns were generated for the different constituents; “W” shaped for DAP-P₂O₅ and “M” for Potash-K₂O regardless of feed rate and spinner disc speed. An increase in spinner disc speed widened the maximum transverse distance travelled by particles. However, it was not equal in magnitude for DAP (P₂O₅) and Potash (K₂O) highlighting the possibility of segregation. The level of segregation increased with spinner disc speed (p < 0.05) but not with feed rate (p > 0.05) as DAP (P₂O₅) particles travelled farther with increase in speed due to larger mean particle size of 3.2 mm against 3.0 mm for potash (K₂O).
    Keywords fertilizers ; particle size ; precision agriculture
    Language English
    Dates of publication 2022-02
    Size p. 83-100.
    Publishing place Springer US
    Document type Article
    ZDB-ID 1482656-2
    ISSN 1385-2256
    ISSN 1385-2256
    DOI 10.1007/s11119-021-09828-5
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 7189: Show issues

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  10. Article: Effect of Vane Shape on Fertilizer Distribution for a Dual-Disc Spinner Spreader

    Fulton, John P / Thaper, Ravinder K / Virk, Simerjeet S / McDonald, Timothy / Fasina, Oladiran

    Applied engineering in agriculture. , v. 36, no. 5

    2020  

    Abstract: Spinner-disc spreaders are commonly used for application of granular fertilizers with components (divider, spinner-discs, and vanes) influencing material flow behavior and distribution. Fertilizer ricocheting off these components is an uncontrolled ... ...

    Abstract Spinner-disc spreaders are commonly used for application of granular fertilizers with components (divider, spinner-discs, and vanes) influencing material flow behavior and distribution. Fertilizer ricocheting off these components is an uncontrolled aspect of material flow that negatively impacts spread uniformity. Therefore, an investigation using potash (KCl) was conducted to understand the impact of vane shape on fertilizer flow, ricocheting and distribution for a dual-disc spinner spreader. Four different vane shapes were used in this study. The first two vanes (Vanes 1 and 2) were common to this type of spinner spreader with a tapered and open-faced design. However, Vane 1 had a forward tapered top edge at an angle of 32° while Vane 2 had a top edge that was tapered backwards at 15°. Vanes 3 and 4 both had C-channel cross sections with Vane 3 tapered from inside out but Vane 4 had a constant height. Treatments included application rates of 220 and 440 kg/ha using three spinner disc speeds (600, 700, and 800 rpm). Stationary tests were conducted using a collection device that mounted around the spinner discs and vanes in order to estimate fertilizer particle exit points off the vanes. Standard pan tests were conducted to characterize resulting spread patterns, effective spread width, and spread uniformity. Results indicated that the level of ricocheting was significantly impacted by top edge design of a vane and increased with disc speed. The forward, upward facing top edge of Vane 1 caused on average, 26% of the material flow to be ricocheted by the vanes thereby inducing an uncontrolled nature of spread. However, the rearward facing top edge of Vane 2 reduced ricocheting by 13% plus generated a backward particle rotation for those contacting it. The majority of ricocheting occurred when particles contacted the vanes compared to the spinner discs. Ricocheting generated an uncontrollable aspect of the spread pattern with these particles applied along the centerline of the spreader. The effective spread width increased with disc speed. All four vane shapes generated equal effective spread widths of 18.3 and 21.3 m at 600 and 700 rpm, respectively. However, at 800 rpm, Vane 4 generated the greatest effective spread width of 24.4 m compared to 22.9 m for the other three vanes. The wider spread width for Vane 4 was contributed to the rectangular U cross-section maximizing the horizontal velocity of potash particles when exiting the vanes compared to the other three, more open faced vanes. Finally, the spread uniformity varied by vane shape with Vane 2 consistently generating the lowest CVs. Keywords: Distribution, Ricocheting, Vane Design, Spread uniformity, pattern.
    Keywords agriculture ; application rate ; crossing ; engineers ; fertilizer application ; fertilizers ; materials ; particles ; shape ; spreaders ; vanes ; width
    Language English
    Size p. 743-751.
    Publishing place American Society of Agricultural and Biological Engineers (ASABE)
    Document type Article
    ZDB-ID 54345-7
    ISSN 0883-8542
    ISSN 0883-8542
    DOI 10.13031/aea.13634
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4767: Show issues

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