keyword
MENU ▼
Read by QxMD icon Read
search

Rocks

keyword
https://www.readbyqxmd.com/read/28448911/adsorption-of-polar-organic-molecules-on-sediments-case-study-on-callovian-oxfordian-claystone
#1
S Rasamimanana, G Lefèvre, R V H Dagnelie
The release and transport of anthropogenic organic matter through the geosphere is often an environmental criterion of safety. Sedimentary rocks are widely studied in this context as geological barriers for waste management. It is the case of Callovian-Oxfordian claystone (COx), for which several studies report adsorption of anthropogenic organic molecules. In this study, we evaluated and reviewed adsorption data of polar organic molecules on COx claystone. Experiments were performed on raw claystone, decarbonated and clay fractions...
April 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28448280/letters
#2
Lorrie Kirby, Jennifer Harris, Karen Rock, Clark Elpenord
No abstract text is available yet for this article.
May 2017: Nursing Management
https://www.readbyqxmd.com/read/28447482/quantitative-potassium-measurements-with-laser-induced-breakdown-spectroscopy-using-low-energy-lasers-application-to-in-situ-k-ar-geochronology-for-planetary-exploration
#3
Yuichiro Cho, Misa Horiuchi, Kazuo Shibasaki, Shingo Kameda, Seiji Sugita
In situ radiogenic isotope measurements to obtain the absolute age of geologic events on planets are of great scientific value. In particular, K-Ar isochrons are useful because of their relatively high technical readiness and high accuracy. Because this isochron method involves spot-by-spot K measurements using laser-induced breakdown spectroscopy (LIBS) and simultaneous Ar measurements with mass spectrometry, LIBS measurements are conducted under a high vacuum condition in which emission intensity decreases significantly...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28447316/mining-and-environmental-health-disparities-in-native-american-communities
#4
REVIEW
Johnnye Lewis, Joseph Hoover, Debra MacKenzie
PURPOSE OF REVIEW: More than a century of hard rock mining has left a legacy of >160,000 abandoned mines in the Western USA that are home to the majority of Native American lands. This article describes how abrogation of treaty rights, ineffective policies, lack of infrastructure, and a lack of research in Native communities converge to create chronic exposure, ill-defined risks, and tribal health concerns. RECENT FINDINGS: Recent results show that Native Americans living near abandoned uranium mines have an increased likelihood for kidney disease and hypertension, and an increased likelihood of developing multiple chronic diseases linked to their proximity to the mine waste and activities bringing them in contact with the waste...
April 26, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28447234/remediation-of-soils-contaminated-with-heavy-metals-with-an-emphasis-on-immobilization-technology
#5
REVIEW
Zahra Derakhshan Nejad, Myung Chae Jung, Ki-Hyun Kim
The major frequent contaminants in soil are heavy metals which may be responsible for detrimental health effects. The remediation of heavy metals in contaminated soils is considered as one of the most complicated tasks. Among different technologies, in situ immobilization of metals has received a great deal of attention and turned out to be a promising solution for soil remediation. In this review, remediation methods for removal of heavy metals in soil are explored with an emphasis on the in situ immobilization technique of metal(loid)s...
April 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28446789/imaging-of-underground-cavities-with-cosmic-ray-muons-from-observations-at-mt-echia-naples
#6
G Saracino, L Amato, F Ambrosino, G Antonucci, L Bonechi, L Cimmino, L Consiglio, R D ' Alessandro, E De Luzio, G Minin, P Noli, L Scognamiglio, P Strolin, A Varriale
Muography is an imaging technique based on the measurement of absorption profiles for muons as they pass through rocks and earth. Muons are produced in the interactions of high-energy cosmic rays in the Earth's atmosphere. The technique is conceptually similar to usual X-ray radiography, but with extended capabilities of investigating over much larger thicknesses of matter thanks to the penetrating power of high-energy muons. Over the centuries a complex system of cavities has been excavated in the yellow tuff of Mt...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28446461/developmental-changes-of-contractile-responses-to-cholinergic-stimuli-role-of-calcium-sensitization-and-related-pathways
#7
Young Jae Im, Jung Keun Lee, Sun Hee Lee, Seung-June Oh, Kwanjin Park
This study was carried out to analyze the developmental changes of bladder response to cholinergic stimulation in detail, highlighting calcium sensitization (CS) and its related pathways. Rats were divided into three groups in accordance with reported time of developmental milestones (newborn: day 1-4, youngster: day 5-14 and grown-up: day 15-21). Following cholinergic stimulation (carbachol 5 uM) the contractile response to detrusor were analyzed with respect to three phases (initial phasic, tonic and superimposed phasic contractions)...
April 26, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28445805/fak-phosphorylation-plays-a-central-role-in-thrombin-induced-rpe-cell-migration
#8
E D Aguilar-Solis, A M López-Colomé, I Lee-Rivera, A Alvarez-Arce, E López
The migration of retinal pigment epithelial (RPE) cells is an important step in various pathologic conditions including subretinal neovascularization (SRN), proliferative vitreoretinopathy (PVR) and, importantly, as a consequence of retinal surgery. Therefore, the elucidation of the mechanisms underlying RPE trans-differentiation and migration is essential for devising effective treatments aimed to the prevention of these disorders. A common event in these pathologies is the alteration of the blood-retina barrier (BRB), which allows the interaction of RPE cells with thrombin, a pro-inflammatory protease contained in serum...
April 23, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28445232/organised-chaos-in-late-specialisation-team-sports-weekly-training-loads-of-elite-adolescent-rugby-union-players
#9
Padraic J Phibbs, Ben Jones, Gregory Roe, Dale Read, Joshua Darrall-Jones, Jonathon Weakley, Andrew Rock, Kevin Till
The aim of this study was to quantify the mean weekly training load (TL) of elite adolescent rugby union players participating in multiple teams, and examine the differences between playing positions. Twenty elite male adolescent rugby union players (17.4 ± 0.7 years) were recruited from a regional academy and categorised by playing position; forwards (n=10) and backs (n=10). Global positioning system and accelerometer microtechnology was used to quantify external TL, and session-rating of perceived exertion (sRPE) was used to quantify internal TL during all sessions throughout a 10-week in-season period...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28445038/distinguishing-quinacridone-pigments-via-terahertz-spectroscopy-absorption-experiments-and-solid-state-density-functional-theory-simulations
#10
A D Squires, R A Lewis, Adam J Zaczek, Timothy M Korter
Through a combined experimental and theoretical investigation we determine that the fundamental modes of three quinacridones fall in the terahertz spectral range (1-10 THz, ∼30-300 cm(-1)). In each spectrum the terahertz resonances correspond to wagging, rocking, or twisting of the quinacridone rings, with the most intense absorption being an in-plane rocking vibration of the carbonyl oxygens. In spite of these spectral similarities, we demonstrate that terahertz measurements readily differentiate β-quinacridone, γ-quinacridone, and 2,9-dimethylquinacridone...
April 26, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28444435/genetic-sex-determination-in-astatotilapia-calliptera-a-prototype-species-for-the-lake-malawi-cichlid-radiation
#11
Erin N Peterson, Maggie E Cline, Emily C Moore, Natalie B Roberts, Reade B Roberts
East African cichlids display extensive variation in sex determination systems. The species Astatotilapia calliptera is one of the few cichlids that reside both in Lake Malawi and in surrounding waterways. A. calliptera is of interest in evolutionary studies as a putative immediate outgroup species for the Lake Malawi species flock and possibly as a prototype ancestor-like species for the radiation. Here, we use linkage mapping to test association of sex in A. calliptera with loci that have been previously associated with genetic sex determination in East African cichlid species...
June 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28442357/dl-3-n-butylphthalide-promotes-neuroplasticity-and-motor-recovery-in-stroke-rats
#12
Yefei Sun, Xi Cheng, Huibin Wang, Xiaopeng Mu, Yifan Liang, YuJia Luo, Huiling Qu, Chuansheng Zhao
BACKGROUNDS AND AIMS: Racemic l-3-n-butylphthalide (dl-NBP), is able to achieve a functional recovery in animal models of cerebral ischemia, vascular dementia, and Alzheimer's disease. In this study, we investigated the effect of dl-NBP on axonal growth, neurogenesis and behavioral performances in rats with cerebral ischemia. METHODS: Focal cerebral ischemia in rats was produced by intracerebral injection of endothelin-1. Starting from postoperative day 7, the experimental rats were administered 70mg/kg dl-NBP by oral gavage for two weeks...
April 22, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28441624/various-soil-amendments-and-environmental-wastes-affect-the-im-mobilization-and-phytoavailability-of-potentially-toxic-elements-in-a-sewage-effluent-irrigated-sandy-soil
#13
Sabry M Shaheen, Mohamed S Shams, Mohamed R Khalifa, Mohamed A El-Dali, Jörg Rinklebe
Contamination of long-term sewage effluent irrigated soils by potentially toxic elements (PTEs) is a serious concern due to its high environmental and health risk. Our scientific hypothesis is that soil amendments can cause contradictory effects on the element mobilization and phytoavailability depending on the type of element and amendment. Therefore, we aimed to assess the impact of the application (1%) of several low cost amendments and environmental wastes on the (im)mobilization, availability, and uptake of Al, Cd, Cr, Cu, Fe, Mn, Ni, and Zn by sorghum (Sorghum bicolor) in a long term sewage effluent irrigated sandy soils collected from Egypt...
April 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28441602/fluoride-and-iodine-enrichment-in-groundwater-of-north-china-plain-evidences-from-speciation-analysis-and-geochemical-modeling
#14
Junxia Li, Hailing Zhou, Kun Qian, Xianjun Xie, Xiaobin Xue, Yijun Yang, Yanxin Wang
To better understand the enrichment of fluoride and iodine in groundwater at North China Plain (NCP), speciation analysis and geochemical modeling were conducted to identify the key hydrochemical processes controlling their mobilization in groundwater system. Groundwater fluoride and iodine concentrations ranged from 0.18 to 5.59mg/L and from 1.51 to 1106μg/L, respectively, and approximately 63% and 32.3% of groundwater fluoride and iodine were higher than the guidelines for drinking water (1.5mg/L and 150μg/L)...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28438902/crucial-role-of-rock2-mediated-phosphorylation-and-upregulation-of-fhod3-in-the-pathogenesis-of-angiotensin-ii-induced-cardiac-hypertrophy
#15
Qing Zhou, Si-Si Wei, Hong Wang, Qian Wang, Wei Li, Gang Li, Jian-Wen Hou, Xiao-Meng Chen, Jie Chen, Wei-Ping Xu, Yi-Gang Li, Yue-Peng Wang
Cardiac hypertrophy is characterized by increased myofibrillogenesis. Angiotensin II (Ang-II) is an essential mediator of the pressure overload-induced cardiac hypertrophy in part through RhoA/ROCK (small GTPase/Rho-associated coiled-coil containing protein kinase) pathway. FHOD3 (formin homology 2 domain containing 3), a cardiac-restricted member of diaphanous-related formins, is crucial in regulating myofibrillogenesis in cardiomyocytes. FHOD3 maintains inactive through autoinhibition by an intramolecular interaction between its C- and N-terminal domains...
April 24, 2017: Hypertension
https://www.readbyqxmd.com/read/28438269/stone-eating-fungi-mechanisms-in-bioweathering-and-the-potential-role-of-laccases-in-black-slate-degradation-with-the-basidiomycete-schizophyllum-commune
#16
Julia Kirtzel, Daniela Siegel, Katrin Krause, Erika Kothe
Many enzymes, such as laccases, are involved in the saprotrophic lifestyle of fungi and the effects of those may be linked to enhanced bioweathering on stone surfaces. To test this hypothesis, we studied the decomposition of kerogen-enriched lithologies, especially with black slate containing up to 20% of Corg. Indeed, a formation of ditches with attached hyphal material could be observed. To address enzymes involved, proteomics was performed and one group of enzymes, the multicopper oxidase family members of laccases, was specifically investigated...
2017: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/28437687/use-of-tourmaline-as-a-potential-petrogenetic-indicator-in-the-determination-of-host-magma-crs-xrd-and-ped-xrf-methods
#17
Bahattin Gullu, Yusuf Kagan Kadioglu
Tourmaline defines a group of complex borosilicate forms as accessory mineral in igneous and metamorphic rocks and they act an important role in the interpretation of the chemical composition changes of the composition of the host fluid of the magma. The variety of tourmaline can be identified by using optical microscopy, X-Ray Diffraction (XRD) and by determining its chemical composition through Polarized Energy Dispersive X-Ray Fluorescence (PED-XRF) methods. However, microscopic investigations and XRD analyses are not quite adequate for detailed determination of tourmaline sub-groups...
April 19, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28437280/inhibition-of-rho-kinase-attenuates-left-ventricular-remodeling-caused-by-chronic-intermittent-hypoxia-in-rats-via-suppressing-myocardial-inflammation-and-apoptosis
#18
Zhi-Hua Wang, Die Zhu, Sheng Xie, Yan Deng, Yueying Pan, Jie Ren, Hui-Guo Liu
Chronic intermittent hypoxia (CIH), the hallmark of obstructive sleep apnea syndrome (OSAS), has been reported to play a key role in the development of OSAS-associated cardiovascular diseases including cardiac remodeling. RhoA/Rho-kinase (ROCK) pathway has also been implicated in myocardial remodeling, but the exact mechanisms are not fully elucidated. The current study's purpose is to investigate the influence of fasudil, a selective ROCK inhibitor, on CIH-induced left ventricular remodeling in rats and its possible mechanisms...
April 18, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28435089/cobalt-chloride-induces-rhoa-rock-activation-and-remodeling-effect-in-h9c2-cardiomyoblasts-involvement-of-pi3k-akt-and-mapk-pathways
#19
Cheng-I Cheng, Yueh-Hong Lee, Po-Han Chen, Yu-Chun Lin, Ming-Huei Chou, Ying-Hsien Kao
Chronic heart failure is a serious complication of myocardial infarction, one of the major causes of death worldwide that often leads to adverse cardiac hypertrophy and poor prognosis. Hypoxia-induced cardiac tissue remodeling is considered an important underlying etiology. This study aimed to delineate the signaling profiles of RhoA/ROCK, PI3K/Akt, and MAPK and their involvement in regulation of remodeling events in cultured H9c2 cardiomyoblast cells. In addition to its growth-suppressive effect, the hypoxia-mimetic chemical, cobalt chloride (CoCl2) significantly induced RhoA kinase activation as revealed by increased MBS phosphorylation and ROCK1/2 expression in H9c2 cells...
April 21, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28434880/ultrasound-assisted-extraction-of-rare-earth-elements-from-carbonatite-rocks
#20
Lisarb O Diehl, Thais L Gatiboni, Paola A Mello, Edson I Muller, Fabio A Duarte, Erico M M Flores
In view of the increasing demand for rare-earth elements (REE) in many areas of high technology, alternative methods for the extraction of these elements have been developed. In this work, a process based on the use of ultrasound for the extraction of REE from carbonatite (an igneous rock) is proposed to avoid the use of concentrated reagents, high temperature and excessive extraction time. In this pioneer work for REE extraction from carbonatite rocks in a preliminary investigation, ultrasonic baths, cup horn systems or ultrasound probes operating at different frequencies and power were evaluated...
April 12, 2017: Ultrasonics Sonochemistry
keyword
keyword
105864
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"