keyword
MENU ▼
Read by QxMD icon Read
search

Sequestration

keyword
https://www.readbyqxmd.com/read/28728124/thin-ferrihydrite-sediment-capping-sequestrates-phosphorus-experiencing-redox-conditions-in-a-shallow-temperate-lacustrine-wetland
#1
Yuanchun Zou, Michael R Grace, Keryn L Roberts, Xiaofei Yu
Synthesized ferrihydrite (Fh) with the dosages of 0.3, 0.6 and 0.9 cm thickness (labeled as Fh, 2Fh and 3Fh respectively, equivalent to 248-774 g/m(2)) were deployed to serve as the reactive capping layer covering the Ornamental Lake sediments, the Royal Botanic Garden of Melbourne. The sediments were exposed to an alternating regime of oxic/anoxic conditions using laboratory reactors for 45 days. Dynamics of dissolved oxygen (DO), pH, filterable reactive phosphorus (FRP), filterable ammonium (NH4(+)), nitrate and nitrite (NOx), total dissolved nitrogen (TDN) and dissolved iron (Fe) of overlying water were examined...
July 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28726129/immunological-aspects-of-rabies-a-literature-review
#2
REVIEW
Iana Suly Santos Katz, Fernanda Guedes, Elaine Raniero Fernandes, Sandriana Dos Ramos Silva
Rabies is a lethal disease caused by the neurotropic virus rabies virus (RABV), and it remains an important public health problem globally. It is known that the host immune response is important for control of viral infection and promoting viral clearance. In this context, it is well documented that, in addition to RABV neutralizing antibody, interferons and cell-mediated immunity also have an important role in preventing the establishment of disease. On the other hand, RABV suppresses host immunity through different mechanisms, for example, direct inhibition of host gene expression, sequestration of pathogen-associated molecular patterns, or modification of cytokine signalling pathways, which hinder the protective host immune responses to RABV infection...
July 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28724229/microbial-association-with-the-dynamics-of-particulate-organic-carbon-in-response-to-the-amendment-of-elevated-co2-derived-wheat-residue-into-a-mollisol
#3
Yanhong Wang, Zhenhua Yu, Yansheng Li, Guanghua Wang, Junjie Liu, Judong Liu, Xiaobing Liu, Jian Jin
As the chemical quality of crop residue is likely to be affected by elevated CO2 (eCO2), residue amendments may influence soil organic carbon (SOC) sequestration. However, in Mollisols, the dynamics of the SOC fractions in response to amendment with wheat residue produced under eCO2 and the corresponding microbial community composition remain unknown. Such investigation is essential to residue management, which affects the soil quality and productivity of future farming systems. To narrow this knowledge gap, (13)C-labeled shoot and root residue derived from ambient CO2 (aCO2) or eCO2 were amended into Mollisols and incubated for 200days...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28724102/impact-of-biochar-organic-and-inorganic-carbon-on-soil-co2-and-n2o-emissions
#4
Rivka B Fidel, David A Laird, Timothy B Parkin
Biochar has been shown to influence soil CO and NO emissions following application to soil, but the presence of carbonates in biochars has largely confounded efforts to differentiate among labile and recalcitrant C pools in biochar and establish their timeframe of influence. Understanding the mechanism, magnitude, and duration of biochar C pools' influence on C and N dynamics is imperative to successful implementation of biochar for C sequestration. Here we therefore aim to assess biochar organic and inorganic C pool impacts on CO and NO emissions from soil amended with two untreated biochars, inorganic carbon (as NaCO), acid (HCl) and bicarbonate (NaHCO) extracts of the biochars, and acid and bicarbonate/acid-washed biochars during a 140-d soil incubation...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28722511/grwd1-a-new-player-among-oncogenesis-related-ribosomal-nucleolar-proteins
#5
Takuya Takafuji, Kota Kayama, Nozomi Sugimoto, Masatoshi Fujita
Increasing attention has been paid to certain ribosomal or ribosome biosynthesis-related proteins involved in oncogenesis. Members of one group are classified as "tumor suppressive factors" represented by RPL5 and RPL11; loss of their functions leads to cancer predisposition. RPL5 and RPL11 prevent tumorigenesis by binding to and inhibiting the MDM2 ubiquitin ligase and thereby up-regulating p53. Many other candidate tumor suppressive ribosomal/nucleolar proteins have been suggested. However, it remains to be experimentally clarified whether many of these factors can actually prevent tumorigenesis and if so, how they do so...
July 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28722194/effects-of-cholesterol-transport-inhibitor-u18666a-on-app-metabolism-in-rat-primary-astrocytes
#6
Hongyan Yang, Yanlin Wang, Satyabrata Kar
Amyloid β (Aβ) peptides generated from the amyloid precursor protein (APP) play an important role in the degeneration of neurons and development of Alzheimer's disease (AD). Current evidence indicates that high levels of cholesterol-which increase the risk of developing AD-can influence Aβ production in neurons. However, it remains unclear how altered level/subcellular distribution of cholesterol in astrocytes can influence APP metabolism. In this study, we evaluated the effects of cholesterol transport inhibitor U18666A-a class II amphiphile that triggers redistribution of cholesterol within the endosomal-lysosomal (EL) system-on APP levels and metabolism in rat primary cultured astrocytes...
July 19, 2017: Glia
https://www.readbyqxmd.com/read/28720527/usefulness-of-percutaneous-endoscopic-lumbar-foraminoplasty-for-lumbar-disc-herniation
#7
Kyung-Chul Choi, Hyeong-Ki Shim, Chan Jin Park, Dong Chan Lee, Choon-Keun Park
OBJECTIVE: Endoscopic foraminoplasty facilitates the engagement of the working cannula via the intervertebral foramen, allowing cannula access near the herniated disc (HD) for the successful application of percutaneous endoscopic lumbar discectomy (PELD). The purpose of this study was to evaluate the efficacy of foraminoplasty for HD and propose applicable situations for foraminoplasty in PELD. METHODS: A retrospective review of consecutive patients who underwent PELD was performed...
July 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28715973/the-molecular-basis-for-human-immunodeficiency-virus-latency
#8
Uri Mbonye, Jonathan Karn
Although potent combination antiretroviral therapy can effectively block viral replication in the host, human immunodeficiency virus (HIV) persists due to the existence of latent but replication-competent proviruses residing primarily in a very small population of resting memory CD4(+) T cells. Viral latency is established when the expression of the autoregulatory viral trans-activating factor Tat is reduced to subthreshold levels. The absence of Tat reduces HIV transcription and protein production to levels that make the host cell invisible to the immune system and refractory to antiretroviral treatment...
July 17, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28713631/percutaneous-cervical-laser-diskectomy-thermoannuloplasty-and-thermonucleoplasty-comparable-results-without-surgery
#9
EDITORIAL
Nancy E Epstein
BACKGROUND: Utilizing the literature, the results of three different minimally invasive surgery (MIS) anterior cervical percutaneous operations for neck/mild radicular pain and magnetic resonance (MR)-documented "contained" (not extruded/sequestrated) discs were evaluated. Results were compared with patients treated nonsurgically for comparable/greater neurological compromise, and even more severe cervical disc disease. METHODS: There were three MIS percutaneous anterior cervical discectomy procedures...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28711000/ecosystem-services-response-to-urbanization-in-metropolitan-areas-thresholds-identification
#10
Jian Peng, Lu Tian, Yanxu Liu, Mingyue Zhao, Yi'na Hu, Jiansheng Wu
Ecosystem service is the key comprehensive indicator for measuring the ecological effects of urbanization. Although various studies have found a causal relationship between urbanization and ecosystem services degradation, the linear or non-linear characteristics are still unclear, especially identifying the impact thresholds in this relationship. This study quantified four ecosystem services (i.e. soil conservation, carbon sequestration and oxygen production, water yield, and food production) and total ecosystem services (TES), and then identified multiple advantageous area of ecosystem services in the peri-urban area of Beijing City...
July 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28710387/protein-tyrosine-phosphatase-inhibition-prevents-experimental-cerebral-malaria-by-precluding-cxcr3-expression-on-t-cells
#11
Kristin M Van Den Ham, Logan K Smith, Martin J Richer, Martin Olivier
Cerebral malaria induced by Plasmodium berghei ANKA infection is dependent on the sequestration of cytotoxic T cells within the brain and augmentation of the inflammatory response. Herein, we demonstrate that inhibition of protein tyrosine phosphatase (PTP) activity significantly attenuates T cell sequestration within the brain and prevents the development of neuropathology. Mechanistically, the initial upregulation of CXCR3 on splenic T cells upon T cell receptor stimulation was critically decreased through the reduction of T cell-intrinsic PTP activity...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28710328/de-novo-telomere-addition-at-chromosome-breaks-dangerous-liaisons
#12
Dmitri Churikov, Vincent Géli
Telomerase counteracts the loss of terminal DNA sequences from chromosome ends; however, it may erroneously add telomeric repeats to DNA double-strand breaks. In this issue, Ouenzar et al. (2017. J. Cell Biol. https://doi.org/10.1083/jcb.201610071) uncover cell cycle-dependent sequestration of the telomerase RNA in nucleoli, a process that excludes telomerase from DNA repair sites.
July 14, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28709828/augmenting-the-efficacy-of-anti-cocaine-catalytic-antibodies-through-chimeric-hapten-design-and-combinatorial-vaccination
#13
Cody J Wenthur, Xiaoqing Cai, Beverly A Ellis, Kim D Janda
Given the need for further improvements in anti-cocaine vaccination strategies, a chimeric hapten (GNET) was developed that combines chemically-stable structural features from steady-state haptens with the hydrolytic functionality present in transition-state mimetic haptens. Additionally, as a further investigation into the generation of an improved bifunctional antibody pool, sequential vaccination with steady-state and transition-state mimetic haptens was undertaken. While GNET induced the formation of catalytically-active antibodies, it did not improve overall behavioral efficacy...
July 5, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28709053/transport-and-retention-of-biochar-nanoparticles-in-a-paddy-soil-under-environmentally-relevant-solution-chemistry-conditions
#14
Ming Chen, Dengjun Wang, Fan Yang, Xiaoyun Xu, Nan Xu, Xinde Cao
Land application of biochar has been increasingly recommended as a powerful strategy for carbon sequestration and soil remediation. However, the biochar particles, especially those in the nanoscale range, may migrate or carry the inherent contaminants along the soil profile, posing a potential risk to the groundwater. This study investigated the transport and retention of wood chip-derived biochar nanoparticles (NPs) in water-saturated columns packed with a paddy soil. The environmentally-relevant soil solution chemistry including ionic strength (0...
July 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28708078/spatial-variation-of-soil-organic-carbon-and-total-nitrogen-in-the-coastal-area-of-mid-eastern-china
#15
Yan Xu, Lijie Pu, Qilin Liao, Ming Zhu, Xue Yu, Tianying Mao, Chenxing Xu
Soils play an important role in sequestrating atmospheric CO₂. Coastal tidal flats have been intensively reclaimed for food security and living spaces worldwide. We aimed to identify the changes of soil organic carbon (SOC) and total nitrogen (TN) following coastal reclamation and their spatial variation in the coastal area of mid-Eastern China to provide information for coastal cropland management. We measured SOC and TN of 463 soil samples in the coastal plain of mid-Eastern China. The results showed that SOC and TN increased highly from the uncultivated coastal tidal flat (2...
July 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28707960/biofunctionalized-hybrid-magnetic-gold-nanoparticles-as-catalysts-for-photothermal-ablation-of-colorectal-liver-metastases
#16
Sarah B White, Dong-Hyun Kim, Yang Guo, Weiguo Li, Yihe Yang, Jeane Chen, Venkateswara R Gogineni, Andrew C Larson
Purpose To demonstrate that anti-MG1 conjugated hybrid magnetic gold nanoparticles (HNPs) act as a catalyst during photothermal ablation (PTA) of colorectal liver metastases, and thus increase ablation zones. Materials and Methods All experiments were performed with approval of the institutional animal care and use committee. Therapeutic and diagnostic multifunctional HNPs conjugated with anti-MG1 monoclonal antibodies were synthesized, and the coupling efficiency was determined. Livers of 19 Wistar rats were implanted with 5 × 10(6) rat colorectal liver metastasis cell line cells...
July 13, 2017: Radiology
https://www.readbyqxmd.com/read/28707260/historical-effects-of-dissolved-organic-carbon-export-and-land-management-decisions-on-the-watershed-scale-forest-carbon-budget-of-a-coastal-british-columbia-douglas-fir-dominated-landscape
#17
B P Smiley, J A Trofymow
BACKGROUND: To address how natural disturbance, forest harvest, and deforestation from reservoir creation affect landscape-level carbon (C) budgets, a retrospective C budget for the 8500 ha Sooke Lake Watershed (SLW) from 1911 to 2012 was developed using historical spatial inventory and disturbance data. To simulate forest C dynamics, data was input into a spatially-explicit version of the Carbon Budget Model-Canadian Forest Sector (CBM-CFS3). Transfers of terrestrial C to inland aquatic environments need to be considered to better capture the watershed scale C balance...
December 2017: Carbon Balance and Management
https://www.readbyqxmd.com/read/28705393/the-gondwanan-connection-southern-temperate-amanita-lineages-and-the-description-of-the-first-sequestrate-species-from-the-americas
#18
Camille Truong, Santiago Sánchez-Ramírez, Francisco Kuhar, Zachary Kaplan, Matthew E Smith
Amanita is a diverse and cosmopolitan genus of ectomycorrhizal fungi. We describe Amanita nouhrae sp. nov., a new hypogeous ('truffle-like') species associated with Nothofagus antarctica in northern Patagonia. This constitutes the first report of a sequestrate Amanita from the Americas. Thick-walled basidiospores ornamented on the interior spore wall ('crassospores') were observed consistently in A. nouhrae and its sister epigeous taxon Amanita morenoi, a rarely collected but apparently common species from northern Patagonia that has sometimes been misidentified as the Australian taxon Amanita umbrinella...
August 2017: Fungal Biology
https://www.readbyqxmd.com/read/28704663/effect-of-sulfide-on-as-iii-and-as-v-sequestration-by-ferrihydrite
#19
Zhixi Zhao, Shaofeng Wang, Yongfeng Jia
The sulfide-induced change in arsenic speciation is often coupled to iron geochemical processes, including redox reaction, adsorption/desorption and precipitation/dissolution. Knowledge about how sulfide influenced the coupled geochemistry of iron and arsenic was not explored well up to now. In this work, retention and mobilization of As(III) and As(V) on ferrihydrite in sulfide-rich environment was studied. The initial oxidation states of arsenic and the contact order of sulfide notably influenced arsenic sequestration on ferrihydrite...
June 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/28704565/contribution-of-seagrass-plants-to-co2-capture-in-a-tropical-seagrass-meadow-under-experimental-disturbance
#20
Diana Deyanova, Martin Gullström, Liberatus D Lyimo, Martin Dahl, Mariam I Hamisi, Matern S P Mtolera, Mats Björk
Coastal vegetative habitats are known to be highly productive environments with a high ability to capture and store carbon. During disturbance this important function could be compromised as plant photosynthetic capacity, biomass, and/or growth are reduced. To evaluate effects of disturbance on CO2 capture in plants we performed a five-month manipulative experiment in a tropical seagrass (Thalassia hemprichii) meadow exposed to two intensity levels of shading and simulated grazing. We assessed CO2 capture potential (as net CO2 fixation) using areal productivity calculated from continuous measurements of diel photosynthetic rates, and estimates of plant morphology, biomass and productivity/respiration (P/R) ratios (from the literature)...
2017: PloS One
keyword
keyword
107976
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"