Health & Environmental Research Online (HERO)


Inorganic Mercury Salts (2)


14,538 References Were Found:

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Unique phenotypes in the sperm of the earthworm Eudrilus eugeniae for assessing radiation hazards

Authors: Yesudhason, BV; Jegathambigai, J; Thangasamy, PA; Lakshmanan, DD; Selvan Christyraj, JR; Sathya Balasingh Thangapandi, EJ; Krishnan, M; Sivasubramaniam, S (In Press) Environmental Monitoring and Assessment. HERO ID: 1337640

[Less] The earthworm, Eudrilus eugeniae is a segmented worm. It has two pairs of testes whose cells are highly . . . [More] The earthworm, Eudrilus eugeniae is a segmented worm. It has two pairs of testes whose cells are highly proliferative. It was found that the earthworm, which is irradiated with X-ray, shows the following phenotypic changes in its sperm: fragmented acrosome in the head, break in the tail, and the appearance of zigzag sperm tail. Sperm morphology can be used as a tool to study radiation hazards in local areas. These three phenotypes were not observed in the sperm of worms exposed to different concentration of toxic chemicals such as sodium arsenate, lead acetate, and mercuric chloride. In contrast, exposure of worms to ethidium bromide caused fragmented acrosome in the head of their sperm cells.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Anxiety Symptoms Differ in Youth With and Without Tic Disorders

Authors: Vermilion, J; Pedraza, C; Augustine, EF; Adams, HR; Vierhile, A; Lewin, AB; Collins, AT; Mcdermott, MP; O'Connor, T; Kurlan, R; van Wijngaarden, E; Murphy, TK; Mink, JW; , (2020) HERO ID: 6575094

[Less] We compared anxiety symptoms in youth with and without tic disorders by comparing scores on the Multidimensional . . . [More] We compared anxiety symptoms in youth with and without tic disorders by comparing scores on the Multidimensional Anxiety Scale for Children (MASC) in youth with tic disorders to those in a concurrent community control group and in a group of treatment-seeking anxious youth from the Child/Adolescent Anxiety Multimodal Study (CAMS). Data from 176 youth with tic disorders, 93 control subjects, and 488 CAMS participants were included. Compared to youth with tic disorders, controls had lower total MASC scores (p < 0.0001) and CAMS participants had similar total MASC scores (p = 0.13). Separation Anxiety (p = 0.0003) and Physical Symptom (p < 0.0001) subscale scores were higher in youth with tic disorders than in CAMS participants. We conclude that the anxiety symptom profile differs in youth with and without tic disorders, which may have important implications for targeting treatment of anxiety in youth with tic disorders.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Impact of oral hygiene instructions on plaque index in adolescents

Authors: Soldo, M; Matijević, J; Malčić Ivanišević, A; Čuković-Bagić, I; Marks, L; Nikolov Borić, D; Jukić Krmek, S; , (2020) HERO ID: 6575096

[Less] The objective of the study, which consisted of a motivational lecture and hands-on training, was to . . . [More] The objective of the study, which consisted of a motivational lecture and hands-on training, was to evaluate the role of oral hygiene education for adolescents.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Falling Down the Rabbit Hole: Child and Family Experiences of Pediatric Hematopoietic Stem Cell Transplant

Authors: West, CH; Dusome, DL; Winsor, J; Rallison, LB; , (2020) HERO ID: 6575099

[Less] Pediatric hematopoietic stem cell transplant (HSCT) is an intensive treatment that can be life-threatening. . . . [More] Pediatric hematopoietic stem cell transplant (HSCT) is an intensive treatment that can be life-threatening. All family members experience distress. We conducted a grounded theory study using a family systems-expressive arts framework to develop a theoretical understanding of the family experience of HSCT. Six families (15 family members) participated in two interviews, drew an image, and were guided through a "dialoguing with images" process. Participants did not always perceive HSCT as an experience they had lived as a family and were surprised to hear other family members' experiences. While one mother drew, she suddenly understood it was not only her ill child, but the entire family who had "fallen down the rabbit hole." The family experience of HSCT is described across (a) the pre-HSCT trajectory, (b) family fragmentation (hospitalization), and (c) family reintegration. We identified a critical need for targeted family intervention during the transition into HSCT, throughout and following hospitalization.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

The CLN3 Disease Staging System: A new tool for clinical research in Batten disease

Authors: Masten, MC; Williams, JD; Vermilion, J; Adams, HR; Vierhile, A; Collins, A; Marshall, FJ; Augustine, EF; Mink, JW; , (2020) HERO ID: 6575100

[Less] To develop a disease-specific staging system for CLN3 disease and to test the hypothesis that salient . . . [More] To develop a disease-specific staging system for CLN3 disease and to test the hypothesis that salient and discrete clinical features of CLN3 disease may be used to define disease stages by analyzed data from an 18-year-long natural history study.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Curing temperature dependency of the release of arsenic from cemented paste backfill made with Portland cement

Authors: Bull, AJ; Fall, M; , (2020) HERO ID: 6575106

[Less] In this research, the effect of curing temperature on the metalloid (As) leachability of cemented paste . . . [More] In this research, the effect of curing temperature on the metalloid (As) leachability of cemented paste backfill (CPB; a mix of tailings, cement and water) is studied. ASTM C 1308 leaching protocol is used to determine the leachability of CPB samples subjected to different curing temperatures (2, 20 and 35 °C). In addition, the effect of curing temperature on the microstructure of CPB is assessed to determine if the temperature dependence of the leaching characteristics of CPB is related to variations in the microstructure of the cement matrix. The microstructural techniques used include, powder x-ray diffraction, mercury intrusion porosimetry, and scanning electron microscopy techniques. The results obtained indicate that the curing temperature has a significant effect on the leachability of CPB. It is found that as curing temperature increased from 2 °C to 35 °C the performance of the CPB for arsenic immobilization decreased. The magnitude of this temperature-induced change in As-leachability of CPB depends on the curing temperature range (low (≤20 °C) or elevated (35 °C) temperatures). This curing temperature dependency of the leachability of CPB is attributable to the temperature-induced changes in the pore structure of CPB, formation/development of hydration products and pH in the CPBs during the curing process. The results also indicate that diffusion dominates as the leaching mechanism through the studied temperature range and is independent of curing temperature. However, curing temperature does control the availability for arsenic to leach. The new findings presented in this paper will contribute to design more environmental-friendly cemented paste backfill materials and structures, which is vital for sustainable mining.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Stereophotogrammetry to reveal age-related changes of labial morphology among Chinese women aging from 20 to 60

Authors: Chong, Y; Dong, R; Liu, X; Wang, X; Yu, N; Long, X; , (2020) HERO ID: 6575109

[Less] The lip is of important aesthetic value and highly subjected to aging. Collecting anthropometric baseline . . . [More] The lip is of important aesthetic value and highly subjected to aging. Collecting anthropometric baseline data and understanding age-related changes of labial morphology can help with diagnosis of deformity, assessment of aging, and planning of cosmetic procedures. Many studies have focused on Caucasians, while there is a lack of anthropometric data on Chinese women.

Journal Article
Journal Article

Removal of elemental mercury from flue gas using the magnetic Fe-containing carbon prepared from the sludge flocculated with ferrous sulfate

Authors: Wang, Y; Li, H; He, Z; Zhang, M; Guan, J; Qian, K; Xu, J; Hu, J; , (2020) HERO ID: 6575112

[Less] The sewage sludge flocculated with ferrous sulfate (SFS) was prepared by one-step pyrolysis to obtain . . . [More] The sewage sludge flocculated with ferrous sulfate (SFS) was prepared by one-step pyrolysis to obtain magnetic Fe-containing carbon. Results showed that only a small amount of FexOy as well as extremely weak magnetism were observed at pyrolysis temperatures of less than 500 °C. SFS tended to exhibit intensive agglomeration, leading to the drastic increase of the crystalline-phase particle size at high pyrolysis temperature. The optimal pyrolysis temperature is 700 °C, corresponding to the production of some sulfides, an optimal content of FexOy, and a suitable BET surface. Hg0 removal efficiency of SFS700 (SFS pyrolyzed at 700 °C) reached 80.7% at the reaction temperature of 125 °C. The presence of O2 and low concentration of SO2 enhanced the Hg0 removal, while the H2O vapor and high SO2 concentration inhibited it. Meanwhile, good resistance for the adsorbent to moderate concentrations of SO2 and H2O was observed. Moreover, the good magnetism performance is conducive to the recovery and utilization of the SFS700 in flue gas. Therefore, SFS can be used for Hg0 removal without any chemical modification after undergoing one-step pyrolysis and this study has guiding significance for the resource utilization and engineering practices.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Green and novel adsorbent from rice straw extracted cellulose for efficient adsorption of Hg (II) ions in an aqueous medium

Authors: Bisla, V; Rattan, G; Singhal, S; Kaushik, A; , (2020) HERO ID: 6575113

[Less] Cellulose nanofibrils (CNF) were extracted from rice straw, a waste lignocellulosic biomass, using soda . . . [More] Cellulose nanofibrils (CNF) were extracted from rice straw, a waste lignocellulosic biomass, using soda cooking, which resulted in a reduction of the recalcitrance of biomass, leading to hydrolysis of hemicellulose into sugars, which was subsequently washed, leaving a residue of cellulose. FTIR confirmed the removal of lignin and hemicellulose to yield pure CNF while XRD, DTG and TGA results showed increased crystallinity and thus higher thermal stability. CNFs were functionalized using l-methionine, a natural amino acid, to graft sulfides and amino functional groups onto the surface of fibers. Structural and morphological changes induced by grafting were confirmed by FTIR, XRD, TEM, Mapping and Elemental analysis. Modified fibers exhibited a high adsorption capacity of 131.86 mg/g for Hg (II) ions even at low concentration i.e. 300 ppm owing to sulfides. Optimization of pH on adsorption behavior was established through extensive pH studies and adsorption kinetics. Adsorption follows pseudo second order kinetic model indicating chemisorption for removal of Hg (II) ions from simulated wastewater.

Journal Article
Journal Article

Mercury and its form in a dammed reservoir ecosystem during the charging phase

Authors: Mir, Y; Wu, S; Ma, M; Mangwandi, C; Mirza, ZA; , (2020) HERO ID: 6575114

[Less] Throughout continents, reservoirs tend to have elevated methylmercury (MeHg) concentration transformed . . . [More] Throughout continents, reservoirs tend to have elevated methylmercury (MeHg) concentration transformed from mercury (Hg/total Hg). This impact may be pronounced in the reservoir with less velocity of water during the charging period resulted in the deposition of sediments. In sediments on favorable conditions, methylation may be enhanced by the decomposition of flood organic material, which can release Hg and enhance microbial activity. However, much less is known about the transfer ratio of Hg and its form MeHg from sediment to biota in the hydrological reservoir during the dam charging phase. The objective of our study was to understand the interrelationship between total Hg and MeHg in two key components sediment and fish in the reservoir ecosystem. This study was performed at the Three Gorges Reservoir (TGR) located on upstream of the Yangtze River in China. At the TGR charging phase, during winter time, the water level was high due to blockade of water by Three Gorges Dam (TGD). Sediment and fish samples were collected in winter season for total Hg, MeHg, and several ancillary parameters. The results showed that total Hg in sediment samples of the winter season were ranged from 6.2 ± 0.001 to 193.3 ± 0.001 × 10-3 mg/kg, with an average value of 53.76 ± 51.80 × 10-3 mg/kg, and for MeHg was ranged from 12.1 ± 0.04 to 348.7 ± 0.16 × 10-2 ng/g, with an average value of 98.96 ± 93.07 × 10-2 ng/g. Total Hg and MeHg in fish samples of the winter season were from 42.48 ± 6.71 to 166 ± 52.56 ng/g, with an average value of 76.22 ± 31.23 ng/g, and from 21.09 ± 2.31 to 61.60 ± 13.30 ng/g, with an average value of 37.89 ± 11.96 ng/g. The relationship of total Hg and MeHg concentrations in fish to those of sediments from corresponding sites showed a negative relationship. This might include a strong association of total Hg with an inorganic component of sediment (e.g., bound to sulfides or coprecipitated with other metal oxides such as manganese and iron). The average concentration of fish MeHg found in this study, at rates greater than 1.72 g/day, was estimated hazardous to human health. This study concludes sediment was acting as sequestrate for total Hg and MeHg in TGR. The bioaccumulation of total Hg and MeHg in fish was not controlled by sediment further investigation about pathological routes and dietary habits of fish needed to be identified for total Hg and MeHg study in TGR.