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  1. Article ; Online: Serving Summer Meals During the COVID-19 Pandemic: A Case Study of 2 Summer Food Service Program Sponsors in Maryland.

    Lu, Stacy V / Gross, Julia / Harper, Kaitlyn M / Medina-Perez, Karen / Wilson, Michael J / Gross, Susan M

    The Journal of school health

    2022  Volume 92, Issue 5, Page(s) 429–435

    Abstract: Background: The Summer Food Service Program (SFSP) provides free and nutritious meals to children under age 18 during out-of-school times. During the COVID-19 pandemic, Maryland sponsors served over 9.5 million meals to children through an expanded ... ...

    Abstract Background: The Summer Food Service Program (SFSP) provides free and nutritious meals to children under age 18 during out-of-school times. During the COVID-19 pandemic, Maryland sponsors served over 9.5 million meals to children through an expanded version of the SFSP. This study aimed to explore and compare the factors that enabled 2 SFSP sponsors in Maryland to dramatically increase meals distribution during the pandemic.
    Methods: Sponsors were selected based on their responses in the larger study and demographic characteristics of the area in which they served. Semi-structured in-depth interviews were conducted over Zoom-4 interviews with Sponsor A (3 interviews with the sponsor, 1 interview with their vendor) and 1 interview with Sponsor B. Qualitative data were analyzed inductively and deductively. Participation data from 2019 and 2020 were obtained from the Maryland State Department of Education and analyzed.
    Results: Despite their differences in organization type and geographic region, they identified similar facilitators to their success-communication with the community and utilization of the United States Department of Agriculture-issued waivers.
    Conclusions: Strengthening community communication networks and permanently integrating more flexibility into regulation of the SFSP may increase meals participation during future out-of-school times.
    MeSH term(s) Adolescent ; COVID-19/epidemiology ; Child ; Food Services ; Humans ; Maryland/epidemiology ; Meals ; Pandemics ; Schools ; United States
    Language English
    Publishing date 2022-03-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 952835-0
    ISSN 1746-1561 ; 0022-4391
    ISSN (online) 1746-1561
    ISSN 0022-4391
    DOI 10.1111/josh.13145
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The Impact of the COVID-19 Pandemic on the Experiences and Operations of Sponsors of the Summer Food Service Program in Maryland, USA: A Multiphase Mixed Methods Study.

    Lu, Stacy V / Harper, Kaitlyn M / Ding, Yoyo / Everett, Jordan / Gross, Julia / Borman, Rachael / Medina-Perez, Karen / Pinzini, Brielle / Wilson, Michael J / Gross, Susan M

    Nutrients

    2023  Volume 15, Issue 7

    Abstract: During the COVID-19 pandemic, the Summer Food Service Program (SFSP) was allowed to operate in untraditional non-summer months to ensure children did not lose access to free and reduced-priced nutritious meals when schools were mandated to close in the ... ...

    Abstract During the COVID-19 pandemic, the Summer Food Service Program (SFSP) was allowed to operate in untraditional non-summer months to ensure children did not lose access to free and reduced-priced nutritious meals when schools were mandated to close in the United States. This study assessed the impact of the pandemic on the operations and experiences of Summer Food Service Program (SFSP) sponsors in the state of Maryland during the COVID-19 pandemic in 2020 (Phase I) and 2021 (Phase II). This study used a multiphase explanatory sequential mixed methods design with qualitative prioritization. Maryland SFSP sponsors completed an online survey (Phase I: n = 27, Phase II: n = 30), and semi-structured in-depth interviews were conducted with a subset of sponsors who completed the survey (Phase I: n = 12, Phase II: n = 7). Inductive and deductive analyses were used for qualitative data, and descriptive statistics were used for quantitative data. The COVID-19 pandemic caused SFSP sponsors to change their operations. Sponsors were primarily concerned about staff safety/burnout and decreased participation. Sponsors perceived waivers implemented by the United States Department of Agriculture to be crucial in enabling them to serve meals to children during the pandemic. The findings from our study support advocacy efforts to permanently implement waivers and provide free school meals for all children.
    MeSH term(s) Child ; Humans ; United States/epidemiology ; COVID-19/epidemiology ; Maryland/epidemiology ; Pandemics ; Food Supply ; Poverty ; Meals ; Food Services
    Language English
    Publishing date 2023-03-27
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2518386-2
    ISSN 2072-6643 ; 2072-6643
    ISSN (online) 2072-6643
    ISSN 2072-6643
    DOI 10.3390/nu15071628
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Acute and chronic ecotoxicity of carbaryl with a battery of aquatic bioassays.

    Toumi, Hela / Burga-Perez, Karen F / Ferard, Jean-François

    Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes

    2016  Volume 51, Issue 1, Page(s) 57–62

    Abstract: The ecotoxic effects of carbaryl (carbamate insecticide) were investigated with a battery of four aquatic bioassays. The nominal effective concentrations immobilizing 50% of Daphnia magna (EC50) after 24 and 48 h were 12.76 and 7.47 µg L(-1), ... ...

    Abstract The ecotoxic effects of carbaryl (carbamate insecticide) were investigated with a battery of four aquatic bioassays. The nominal effective concentrations immobilizing 50% of Daphnia magna (EC50) after 24 and 48 h were 12.76 and 7.47 µg L(-1), respectively. After 21 days of exposure of D. magna, LOECs (lowest observed effect concentrations) for cumulative molts and the number of neonates per surviving adult were observed at carbaryl concentration of 0.4 µg L(-1). An increase of embryo deformities (curved or unextended shell spines) was observed at 1.8 and 3.7 µg L(-1), revealing that carbaryl could act as an endocrine disruptor in D. magna. Other bioassays of the tested battery were less sensitive: the IC50-72h and IC10-72h of the algae Pseudokirchneriella subcapitata were 5.96 and 2.87 mg L(-1), respectively. The LC50-6d of the ostracod Heterocypris incongruens was 4.84 mg L(-1). A growth inhibition of H. incongruens was registered after carbaryl exposure and the IC20-6d was 1.29 mg L(-1). Our results suggest that the daphnid test sensitivity was better than other used tests. Moreover, carbaryl has harmful and toxic effects on tested species because it acts at low concentrations on diverse life history traits of species and induce embryo deformities in crustaceans.
    MeSH term(s) Animals ; Carbaryl/toxicity ; Chlorophyta/drug effects ; Crustacea/drug effects ; Daphnia/drug effects ; Insecticides/toxicity ; Water Pollutants, Chemical/toxicity
    Chemical Substances Insecticides ; Water Pollutants, Chemical ; Carbaryl (R890C8J3N1)
    Language English
    Publishing date 2016
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 197072-0
    ISSN 1532-4109 ; 0360-1234
    ISSN (online) 1532-4109
    ISSN 0360-1234
    DOI 10.1080/03601234.2015.1080500
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online: Avocado Buying Trends in the United States Using SAC

    Jones, Velma / Keyse, Kendra / Melgoza, Alfredo / Perez, Karen / Qamar, Tammy / Villalpando, Jason / Woo, Jongwook

    2021  

    Abstract: The purpose of our paper is to analyze the dataset from Hass Avocado Board (HAB). The data features historical data on avocado prices and sales volume in multiple cities, states, and regions of the United States, ranging from 2015 to 2020. The paper ... ...

    Abstract The purpose of our paper is to analyze the dataset from Hass Avocado Board (HAB). The data features historical data on avocado prices and sales volume in multiple cities, states, and regions of the United States, ranging from 2015 to 2020. The paper consists of a mapped and calculated statistical analysis of the data over an established period. Using the cloud visualization tool SAP Analytics Cloud (SAC) to import and clean the data, we will complete comprehensive investigations and employ class lecture information as needed. Then, we will present insights using visualization, and time-series analysis. Our research intends to reveal insights into consumer buying statistics, such as the most popular type of avocado, preferences of organic to conventional and seasonality trends. The research is relevant as health-conscious trends have become increasingly popular, and avocado purchases indicate this.
    Keywords Computer Science - Distributed ; Parallel ; and Cluster Computing ; Mathematics - Numerical Analysis
    Subject code 306
    Publishing date 2021-04-09
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Assessment of the LuminoTox leachate phase assay as a complement to the LuminoTox solid phase assay: effect of fine particles in natural sediments.

    Burga Pérez, Karen F / Charlatchka, Rayna / Férard, Jean-François

    Chemosphere

    2013  Volume 90, Issue 3, Page(s) 1310–1315

    Abstract: The LuminoTox solid phase assay (Lum-SPA), developed to assess the potential ecotoxicity of natural polluted sediments, employs stabilized thylakoids isolated from spinach plant extracts. When thylakoids are exposed to polluted samples, the action of ... ...

    Abstract The LuminoTox solid phase assay (Lum-SPA), developed to assess the potential ecotoxicity of natural polluted sediments, employs stabilized thylakoids isolated from spinach plant extracts. When thylakoids are exposed to polluted samples, the action of pollutants can interfere with transmission of chlorophyll fluorescence linked to Photosystems I and II, causing a decrease in fluorescence emission. To differentiate between bulk and leachate effects, we developed a complementary assay of the Lum-SPA named the LuminoTox leachate phase assay (Lum-LPA). Twelve natural sediments were selected on the basis of their potential ecotoxicity and different quantities of fines. Results showed that in the Lum-LPA, the IC50s were always lower than those observed in the Lum-SPA. Significant inverse correlations were found between the IC50s obtained with the Lum-SPA and the percentage of fines (silt+clay fraction). In order to identify the cause of the higher ecotoxicity found in the Lum-LPA, we tested the supernatant of the liquid phase recovered after centrifugation (3000 g), and it appeared far less toxic than the Lum-LPA filtrates. To confirm the hypothesis that sensitivity in the Lum-LPA could be due to the presence of very fine particles, Photosynthetic Enzyme Complexes (PECs) were exposed to two kinds of clay materials with and without copper (0.6 mg L(-1)). Similar results were obtained in the Lum-LPA for both cases, revealing the sensitivity of this test to very fine particles.
    MeSH term(s) Chlorophyll/metabolism ; Fluorescence ; Geologic Sediments/analysis ; Inhibitory Concentration 50 ; Particle Size ; Soil Pollutants/toxicity ; Spinacia oleracea/drug effects ; Spinacia oleracea/metabolism ; Thylakoids/drug effects ; Thylakoids/metabolism ; Toxicity Tests/methods ; Water Pollutants, Chemical/toxicity
    Chemical Substances Soil Pollutants ; Water Pollutants, Chemical ; Chlorophyll (1406-65-1)
    Language English
    Publishing date 2013-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2012.09.078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Effect of carbaryl (carbamate insecticide) on acetylcholinesterase activity of two strains of Daphnia magna (Crustacea, Cladocera).

    Toumi, Hela / Bejaoui, Mustapha / Touaylia, Samir / Burga Perez, Karen F / Ferard, Jean François

    Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes

    2016  Volume 51, Issue 11, Page(s) 777–780

    Abstract: The present study was designed to investigate the effect of carbaryl (carbamate insecticide) on the acetylcholinesterase activity in two strains (same clone A) of the crustacean cladoceran Daphnia magna. Four carbaryl concentrations (0.4, 0.9, 1.8 and 3 ... ...

    Abstract The present study was designed to investigate the effect of carbaryl (carbamate insecticide) on the acetylcholinesterase activity in two strains (same clone A) of the crustacean cladoceran Daphnia magna. Four carbaryl concentrations (0.4, 0.9, 1.8 and 3.7 µg L(-1)) were compared against control AChE activity. Our results showed that after 48 h of carbaryl exposure, all treatments induced a significant decrease of AChE activities whatever the two considered strains. However, different responses were registered in terms of lowest observed effect concentrations (LOEC: 0.4 µg L(-1) for strain 1 and 0.9 µg L(-1) for strains 2) revealing differences in sensitivity among the two tested strains of D. magna. These results suggest that after carbaryl exposure, the AChE activity responses can be also used as a biomarker of susceptibility. Moreover, our results show that strain1 is less sensitive than strain 2 in terms of IC50-48 h of AChE activity. Comparing the EC50-48 h of standard ecotoxicity test and IC50-48 h of AChE inhibition, there is the same order of sensitivity with both strains.
    MeSH term(s) Acetylcholinesterase/drug effects ; Acetylcholinesterase/genetics ; Animals ; Carbaryl/toxicity ; Daphnia/drug effects ; Daphnia/enzymology ; Daphnia/genetics ; Genetic Variation ; Insecticides/toxicity
    Chemical Substances Insecticides ; Acetylcholinesterase (EC 3.1.1.7) ; Carbaryl (R890C8J3N1)
    Language English
    Publishing date 2016-11
    Publishing country England
    Document type Comparative Study ; Journal Article
    ZDB-ID 197072-0
    ISSN 1532-4109 ; 0360-1234
    ISSN (online) 1532-4109
    ISSN 0360-1234
    DOI 10.1080/03601234.2016.1198645
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: An increase of microRNA-16-1 is associated with the high proliferation of squamous intraepithelial lesions in the presence of the integrated state of HR-HPV in liquid cytology samples.

    Zubillaga-Guerrero, Ma Isabel / Illades-Aguiar, Berenice / Flores-Alfaro, Eugenia / Castro-Coronel, Yaneth / Jiménez-Wences, Hilda / Patiño, Esther Ivonne López-Bayghen / Pérez, Karen Itzel García / Del Carmen Alarcón-Romero, Luz

    Oncology letters

    2020  Volume 20, Issue 4, Page(s) 104

    Abstract: Studies of cervical cancer (CC) have reported that microRNA-16-1 (miR-16-1), which is an oncomiR, is increased in the tissues and cell lines of CC. The aim of the present study was to investigate the association of miRNA-16-1 expression level with ... ...

    Abstract Studies of cervical cancer (CC) have reported that microRNA-16-1 (miR-16-1), which is an oncomiR, is increased in the tissues and cell lines of CC. The aim of the present study was to investigate the association of miRNA-16-1 expression level with squamous cell carcinoma (SCC), the presence of squamous intraepithelial lesions (SIL) and the integration of high-risk human papillomavirus (HR-HPV) DNA. The current study analyzed 80 samples obtained from women by liquid-based cytology, which revealed that 20 were negative for SIL (NSIL) and without HPV, 20 were low-grade SIL (LSIL), 20 were high-grade SIL (HSIL), and 20 were diagnosed as SCC with HR-HPV. The genotyping of the viral DNA was conducted via an INNO-LiPA-HPV array, the expression of miR-16-1 was determined by reverse transcription-quantitative PCR, and the physical state of the HR-HPV was ascertained by
    Language English
    Publishing date 2020-08-10
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 2573196-8
    ISSN 1792-1082 ; 1792-1074
    ISSN (online) 1792-1082
    ISSN 1792-1074
    DOI 10.3892/ol.2020.11965
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Microscale Ecotoxicity Testing of Moselle River Watershed (Lorraine Province, France) Sediments.

    Férard, Jean François / Pérez, Karen F Burga / Blaise, Christian / Péry, Alexandre / Sutthivaiyakit, Pakawadee / Gagné, François

    Journal of xenobiotics

    2015  Volume 5, Issue 1, Page(s) 5125

    Abstract: The ecotoxic potential of seven Moselle river watershed sediments was assessed with a battery of bioassays comprised of rapid phototrophic [LuminoTox solid phase (L-SPA) and elutriate (L-ELU) assays] and bacterial [Microtox solid phase assay (M-SPA)] ... ...

    Abstract The ecotoxic potential of seven Moselle river watershed sediments was assessed with a battery of bioassays comprised of rapid phototrophic [LuminoTox solid phase (L-SPA) and elutriate (L-ELU) assays] and bacterial [Microtox solid phase assay (M-SPA)] exposure tests, as well as with two micro-invertebrate solid phase tests conducted with
    Language English
    Publishing date 2015-06-09
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2039-4705
    ISSN 2039-4705
    DOI 10.4081/xeno.2015.5125
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: New methodological improvements in the Microtox® solid phase assay.

    Burga Pérez, Karen F / Charlatchka, Rayna / Sahli, Leila / Férard, Jean-François

    Chemosphere

    2012  Volume 86, Issue 1, Page(s) 105–110

    Abstract: The classic Microtox® solid phase assay (MSPA) based on the inhibition of light production of the marine bacteria recently renamed Aliivibrio fischeri suffers from various bias and interferences, mainly due to physico-chemical characteristics of the ... ...

    Abstract The classic Microtox® solid phase assay (MSPA) based on the inhibition of light production of the marine bacteria recently renamed Aliivibrio fischeri suffers from various bias and interferences, mainly due to physico-chemical characteristics of the tested solid phase. To precisely assess ecotoxicity of sediments, we have developed an alternative method, named Microtox® leachate phase assay (MLPA), in order to measure the action of dissolved pollutants in the aqueous phase. Two hypotheses were formulated to explain the observed difference between MSPA and MLPA results: a real ecotoxicity of the solid phase or the fixation of bacteria to fine particles and/or organic matter. To estimate the latter, flow cytometry analyses were performed with two fluorochromes (known for their ability to stain bacterial DNA), allowing correction of MSPA measurements and generation of new (corrected) IC50. Comparison of results of MLPA with the new IC50 MSPA allows differentiating real ecotoxic and fixation effect in classic MSPA especially for samples with high amount of fines and/or organic matter.
    MeSH term(s) Aliivibrio fischeri/drug effects ; Flow Cytometry ; Fluorescent Dyes/analysis ; Fluorescent Dyes/chemistry ; Geologic Sediments/analysis ; Inhibitory Concentration 50 ; Toxicity Tests/methods ; Water Pollutants, Chemical/analysis ; Water Pollutants, Chemical/toxicity
    Chemical Substances Fluorescent Dyes ; Water Pollutants, Chemical
    Language English
    Publishing date 2012-01
    Publishing country England
    Document type Evaluation Studies ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2011.08.042
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Microscale Ecotoxicity Testing of Moselle River Watershed (Lorraine Province, France) Sediments

    Férard, Jean-François / Pérez, Karen F. Burga / Blaise, Christian / Péry, Alexandre / Sutthivaiyakit, Pakawadee / Gagné, François

    Journal of xenobiotics. 2015 June 09, v. 5, no. 1

    2015  

    Abstract: The ecotoxic potential of seven Moselle river watershed sediments was assessed with a battery of bioassays comprised of rapid phototrophic [LuminoTox solid phase (L-SPA) and elutriate (L-ELU) assays] and bacterial [Microtox solid phase assay (M-SPA)] ... ...

    Abstract The ecotoxic potential of seven Moselle river watershed sediments was assessed with a battery of bioassays comprised of rapid phototrophic [LuminoTox solid phase (L-SPA) and elutriate (L-ELU) assays] and bacterial [Microtox solid phase assay (M-SPA)] exposure tests, as well as with two micro-invertebrate solid phase tests conducted with Hydra attenuata (lethal and sublethal effects solid phase assay, HL-SPA and HSL-SPA) and Chironomus riparius. Measured effects of sediments and their elutriates were varied and reflected responses that were ecotoxicity test-, endpoint- and site-dependent, suggesting some degree of risk toward benthic and water column organisms, respectively, at specific sites. Correlation analysis demonstrated that L-SPA and M-SPA ecotoxicity responses were significantly linked with the Hydra HSL-SPA assay, indicating their ability to predict ecotoxicity towards an invertebrate taxonomic group representing secondary consumers. While the L-SPA and M-SPA assays hold promise as rapid screens for sediment ecotoxicity, correlation analysis with grain size (L-SPA: r=–0.795, P=0.033; M-SPA: r=–0.73, P=0.07) points out that their responses can be influenced by the presence of fines (i.e., sediment particles ≤0.063 mm in size) and that this information is essential to properly interpret ecotoxicity data generated with these assays. Finally, notable differences observed in trophic level sensitivities once again recall the importance of employing a test battery to adequately appraise the ecotoxicity of sediments.
    Keywords Chironomus riparius ; Hydra ; bioassays ; ecotoxicology ; invertebrates ; risk ; rivers ; sediments ; sublethal effects ; trophic relationships ; watersheds ; xenobiotics ; France ; Moselle river ; freshwater sediments ; ecotoxicity ; small-scale toxicity tests
    Language English
    Dates of publication 2015-0609
    Publishing place PAGEPress Publications, Pavia, Italy
    Document type Article ; Online
    Note Funding: the third and last authors acknowledge funding obtained under the Saint-Lawrence River Action Plan, Environment Canada, to advance knowledge on sediment toxicity testing assessment. ; Resource is Open Access ; This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
    ZDB-ID 2649720-7
    ISSN 2039-4713
    ISSN 2039-4713
    DOI 10.4081/xeno.2015.5125
    Database NAL-Catalogue (AGRICOLA)

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