keyword
MENU ▼
Read by QxMD icon Read
search

Well water

keyword
https://www.readbyqxmd.com/read/29668133/helminth-eggs-as-parasitic-indicators-of-fecal-contamination-in-agricultural-irrigation-water-biosolids-soils-and-pastures
#1
María Claudia Campos, Milena Beltrán, Nancy Fuentes, Gerardo Moreno
INTRODUCTION: A very common practice in agriculture is the disposal of wastewater and biosolids from water treatment systems due to their high nutrient content, which substantially improves crop yields. However, the presence of pathogens of fecal origin creates a sanitary risk to farmers and consumers. OBJECTIVE: To determine the presence and concentration of helminth eggs in irrigation waters, biosolids, agricultural soils, and pastures. MATERIALS AND METHODS: Water, biosolids, soil, and pasture samples were collected and analyzed for helminth egg detection, total eggs and viable eggs counts...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29667677/theoretical-determination-of-adsorption-and-ionisation-energies-of-polycyclic-aromatic-hydrocarbons-on-water-ice
#2
Eric Michoulier, Nadia Ben Amor, Mathias Rapacioli, Jennifer A Noble, Joëlle Mascetti, Céline Toubin, Aude Simon
In dense interstellar environments, Polycyclic Aromatic Hydrocarbons (PAHs) are likely to condense onto or integrate into water ice mantles covering dust grains. Understanding the role of ice in the photo-induced processes involving adsorbed PAHs is therefore a key issue in astrochemistry. This requires (i) the knowledge of PAH-ice interactions, i.e. PAH-ice adsorption energies and local structures at the PAH-ice interface, as well as (ii) the understanding of the fate of electrons in the PAH-ice system upon excitation...
April 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29667515/preparation-and-characterisation-of-activated-carbon-from-waste-tea-by-physical-activation-using-steam
#3
Jiazhen Zhou, Anran Luo, Youcai Zhao
In this study, the feasibility of preparing activated carbon from waste tea by physical activation using steam was investigated. The effects of activation temperature on yield and pore properties of the prepared activated carbon were studied. The yield decreased with increased activation temperature owing to the decomposition of cellulose and hemicellulose. The specific surface area and pore volume of the activated carbon were estimated using the Brunauer-Emmett-Teller method, Langmuir equation, and t-plot method...
April 18, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/29667431/vibrational-spectroscopy-as-a-promising-toolbox-for-analyzing-functionalized-ceramic-membranes
#4
Johannes Kiefer, Julia Bartels, Stephen Kroll, Kurosch Rezwan
Ceramic materials find use in many fields including the life sciences and environmental engineering. For example, ceramic membranes have shown to be promising filters for water treatment and virus retention. The analysis of such materials, however, remains challenging. In the present study, the potential of three vibrational spectroscopic methods for characterizing functionalized ceramic membranes for water treatment is evaluated. For this purpose, Raman scattering, infrared (IR) absorption, and solvent infrared spectroscopy (SIRS) were employed...
January 1, 2018: Applied Spectroscopy
https://www.readbyqxmd.com/read/29667395/benzothiazole-based-aiegen-with-tunable-excited-state-intramolecular-proton-transfer-esipt-and-restricted-intramolecular-rotation-rir-processes-for-highly-sensitive-physiological-ph-sensing
#5
Kai Li, Qi Feng, Guangle Niu, Weijie Zhang, Yuanyuan Li, Miaomiao Kang, Kui Xu, Juan He, Hongwei Hou, Ben Zhong Tang
In this work, a benzothiazole-based aggregation-induced emission luminogen (AIEgen) of 2-(5-(4-carboxyphenyl)-2-hydroxyphenyl)benzothiazole (3) was designed and synthesized, which exhibited multi-fluorescence emissions in different dispersed or aggregated state based on tunable excited-state intramolecular proton transfer (ESIPT) and restricted intramolecular rotation (RIR) processes. 3 was successfully used as a ratiometric fluorescent chemosensor for the detection of pH, which exhibited reversible acid/base-switched yellow/cyan emission transition...
April 18, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29667306/carbon-and-nitrogen-based-nanosheets-as-fluorescent-probes-with-tunable-emission
#6
Jingwen Sun, Ravit Malishev, Adi Azoulay, Jonathan Tzadikov, Michael Volokh, Raz Jelinek, Menny Shalom
2D carbon and nitrogen based semiconductors (CN) have attracted widespread attention for their possible use as low-cost and environmentally friendly materials for various applications. However, their limited solution-dispersibility and the difficulty in preparing exfoliated sheets with tunable photophysical properties restrain their exploitation in imaging-related applications. Here, the synthesis of carbon and nitrogen organic scaffolds with highly tunable optical properties, excellent dispersion in water and DMSO, and good bioimaging properties is reported...
April 18, 2018: Small
https://www.readbyqxmd.com/read/29667008/eco-friendly-synthesis-in-vitro-anti-proliferative-evaluation-and-3d-qsar-analysis-of-a-novel-series-of-monocationic-2-aryl-heteroaryl-substituted-6-2-imidazolinyl-benzothiazole-mesylates
#7
Livio Racané, Lucija Ptiček, Mirela Sedić, Petra Grbčić, Sandra Kraljević Pavelić, Branimir Bertoša, Irena Sović, Grace Karminski-Zamola
Herein, we describe the synthesis of twenty-one novel water-soluble monocationic 2-aryl/heteroaryl-substituted 6-(2-imidazolinyl)benzothiazole mesylates 3a-3u and present the results of their anti-proliferative assays. Efficient syntheses were achieved by three complementary simple two-step synthetic protocols based on the condensation reaction of aryl/heteroaryl carbaldehydes or carboxylic acid. We developed an eco-friendly synthetic protocol using glycerol as green solvent, particularly appropriate for the condensation of thermally and acid-sensitive heterocycles such as furan, benzofuran, pyrrole, and indole...
April 17, 2018: Molecular Diversity
https://www.readbyqxmd.com/read/29666374/hatric-based-identification-of-receptors-for-orphan-ligands
#8
Nadine Sobotzki, Michael A Schafroth, Alina Rudnicka, Anika Koetemann, Florian Marty, Sandra Goetze, Yohei Yamauchi, Erick M Carreira, Bernd Wollscheid
Cellular responses depend on the interactions of extracellular ligands, such as nutrients, growth factors, or drugs, with specific cell-surface receptors. The sensitivity of these interactions to non-physiological conditions, however, makes them challenging to study using in vitro assays. Here we present HATRIC-based ligand receptor capture (HATRIC-LRC), a chemoproteomic technology that successfully identifies target receptors for orphan ligands on living cells ranging from small molecules to intact viruses...
April 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29666338/identification-of-ssr-and-retrotransposon-based-molecular-markers-linked-to-morphological-characters-in-oily-sunfl-ower-helianthus-annuus-l-under-natural-and-water-limited-states
#9
Soleimani Gezeljeh Ali, Reza Darvishzadeh, Asa Ebrahimi, Mohammad Reza Bihamta
Sunflower is an important source of edible oil. Drought is known as an important factor limiting the growth and productivity of field crops in most parts of the world. Agricultural biotechnology mainly aims at developing crops with higher tolerance to the challenging environmental conditions, such as drought. This study examined a number of morphological characters, along with relative water content (RWC) in 100 inbred sunflower lines. A 10 × 10 simple lattice design with two replications was employed to measure the mentioned parameters under natural and water-limited states during two successive years...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29666223/reply-to-xi-et-al-water-table-fluctuation-is-well-recognized-and-discussed-in-our-study
#10
Ying Fan, Gonzalo Miguez-Macho, Esteban G Jobbágy, Robert B Jackson, Carlos Otero-Casal
No abstract text is available yet for this article.
April 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29665622/existing-regulatory-approaches-to-reducing-exposures-to-chemical-and-product-based-risk-and-their-applicability-to-diet-related-chronic-disease
#11
Deborah A Cohen, Debra S Knopman
We aimed to identify and categorize the types of policies that have been adopted to protect Americans from harmful exposures that could also be relevant for addressing diet-related chronic diseases. This article examines and categorizes the rationales behind government regulation. Our interest in the historical analysis is to inform judgments about how best to address newly emergent risks involving diet-related chronic disease within existing regulatory and information-based frameworks. We assessed exemplars of regulation with respect to harmful exposures from air, water, and food, as well as regulations that are intended to modify voluntary behaviors...
April 17, 2018: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29665547/lead-and-cadmium-levels-in-raw-bovine-milk-and-dietary-risk-assessment-in-areas-near-petroleum-extraction-industries
#12
Reza Norouzirad, Jose-Ramiro González-Montaña, Felipe Martínez-Pastor, Hedayat Hosseini, Ali Shahrouzian, Mehdi Khabazkhoob, Fardin Ali Malayeri, Haniyeh Moallem Bandani, Mohsen Paknejad, Behrouz Foroughi-Nia, Atefeh Fooladi Moghaddam
Oil fields are a source of heavy metal pollution, but few studies have evaluated its impact on the intake of these contaminants through milk, an important food especially for children. From February 2015 to 2016, 118 samples of raw cow's milk, 14 of fodder and 8 of water in Southwest Iran were collected from farms close to oil fields or related industries. Lead (Pb) and cadmium (Cd) levels were evaluated by graphite furnace atomic absorption spectrometry. Mean±SE in milk and fodder were 47.0±3.9 and 54.0±6...
April 14, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29665503/zebrafish-extracellular-matrix-improves-neuronal-viability-and-network-formation-in-a-3-dimensional-culture
#13
Sung-Min Kim, Daniel Ward Long, Michael Wai Kok Tsang, Yadong Wang
Mammalian central nervous system (CNS) has limited capacity for regeneration. CNS injuries cause life-long debilitation and lead to $50 billion in healthcare costs in U.S. alone each year. Despite numerous efforts in the last few decades, CNS-related injuries remain as detrimental as they were 50 years ago. Some functional recovery can occur, but most regeneration are limited by an extracellular matrix (ECM) that actively inhibits axonal repair and promotes glial scarring. In most tissues, the ECM is an architectural foundation that plays an active role in supporting cellular development and regenerative response after injury...
April 6, 2018: Biomaterials
https://www.readbyqxmd.com/read/29665472/off-line-solid-phase-extraction-and-liquid-chromatography-tandem-mass-spectrometry-method-for-the-quantitation-of-brivaracetam-acid-metabolites-method-validation-and-application-to-in-vitro-metabolism-assays
#14
Emmanuel Bourgogne, Benoit Culot, Sylvie Dell'Aiera, Hugues Chanteux, Armel Stockis, Jean-Marie Nicolas
Brivaracetam (BRV) is a new high affinity synaptic vesicle protein 2A ligand recently approved for adults with partial-onset seizures. As a support to in vitro metabolism assays, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method coupled to off-line solid phase extraction (SPE) was developed to quantify BRV acid metabolites, that is, BRV-AC (carboxylic derivative derived from BRV hydrolysis) and BRV-OHAC (corresponding to hydroxylated BRV-AC). The method was validated for various incubates (liver and kidney tissue homogenates and blood, all from humans) and applied to in vitro metabolism assays...
April 10, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29665418/a-continuous-genome-assembly-of-the-corkwing-wrasse-symphodus-melops
#15
Morten Mattingsdal, Sissel Jentoft, Ole K Tørresen, Halvor Knutsen, Michael M Hansen, Joana I Robalo, Zuzanna Zagrodzka, Carl André, Enrique Blanco Gonzalez
The wrasses (Labridae) are one of the most successful and species-rich families of the Perciformes order of teleost fish. Its members display great morphological diversity, and occupy distinct trophic levels in coastal waters and coral reefs. The cleaning behaviour displayed by some wrasses, such as corkwing wrasse (Symphodus melops), is of particular interest for the salmon aquaculture industry to combat and control sea lice infestation as an alternative to chemicals and pharmaceuticals. There are still few genome assemblies available within this fish family for comparative and functional studies, despite the rapid increase in genome resources generated during the past years...
April 14, 2018: Genomics
https://www.readbyqxmd.com/read/29665337/when-is-ligand-pk-a-a-good-descriptor-for-catalyst-energetics-in-search-of-optimal-co-2-hydration-catalysts
#16
Jeong Yun Kim, Heather J Kulik
We present a detailed study of nearly 70 Zn molecular catalysts for CO2 hydration from four diverse ligand classes ranging from well-studied carbonic anhydrase mimics (e.g., cyclen) to new structures we obtain by leveraging diverse hits from large organic libraries. Using kinetic analysis and establishing linear free energy relationships, we confirm turnover to be sensitive to relative thermodynamic stability of reactive hydroxyl and bound bicarbonate moieties. We observe a wide range of thermodynamic stabilities for these intermediates, showing up to 6 kcal/mol improvement over well-studied cyclen catalysts...
April 17, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29665249/joint-structural-and-physiological-control-on-the-inter-annual-variation-in-productivity-in-a-temperate-grassland-a-data-model-comparison
#17
Zhongmin Hu, Hao Shi, Kaili Cheng, Ying-Ping Wang, Shilong Piao, Yue Li, Li Zhang, Jianyang Xia, Lei Zhou, Wenping Yuan, Steve Running, Longhui Li, Yanbin Hao, Nianpeng He, Qiang Yu, Guirui Yu
Given the important contributions of semi-arid region to global land carbon cycle, accurate modeling of the inter-annual variability (IAV) of terrestrial gross primary productivity (GPP) is important but remains challenging. By decomposing GPP into leaf area index (LAI) and photosynthesis per leaf area (i.e., GPP_leaf), we investigated the IAV of GPP and the mechanisms responsible in a temperate grassland of northwestern China. We further assessed six ecosystem models for their capabilities in reproducing the observed IAV of GPP in a temperate grassland from 2004 to 2011 in China...
April 17, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29664686/enhanced-microbial-survivability-in-subzero-brines
#18
Jacob Heinz, Janosch Schirmack, Alessandro Airo, Samuel P Kounaves, Dirk Schulze-Makuch
It is well known that dissolved salts can significantly lower the freezing point of water and thus extend habitability to subzero conditions. However, most investigations thus far have focused on sodium chloride as a solute. In this study, we report on the survivability of the bacterial strain Planococcus halocryophilus in sodium, magnesium, and calcium chloride or perchlorate solutions at temperatures ranging from +25°C to -30°C. In addition, we determined the survival rates of P. halocryophilus when subjected to multiple freeze/thaw cycles...
April 17, 2018: Astrobiology
https://www.readbyqxmd.com/read/29664653/description-of-adsorption-in-liquid-chromatography-under-non-ideal-conditions
#19
Franziska Ortner, Chantal Ruppli, Marco Mazzotti
A thermodynamically consistent description of binary adsorption in reversed phase chromatography is presented, accounting for thermodynamic nonidealities in the liquid and the adsorbed phase. The investigated system involves the adsorbent Zorbax 300SB-C18, as well as phenetole (PNT) and 4-tert-butylphenol (TBP) as solutes and methanol and water as inert components forming the eluent. The description is based on adsorption isotherms which are a function of the liquid phase activities, in order to account for non-idealities in the liquid phase...
April 17, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29664651/nanocomposite-membrane-with-polyethylenimine-grafted-graphene-oxide-as-a-novel-additive-to-enhance-pollutant-filtration-performance
#20
Lina Zhang, Baoliang Chen, Abdul Ghaffar, Xiaoying Zhu
Synthetic membranes often suffer ubiquitous fouling as well as a trade-off between permeability and selectivity. However, emerging materials which are able to mitigate membrane fouling and break the permeability and selectivity trade-off are urgently needed. A novel additive, GO-PEI, bearing a positive charge and hydrophilic nature was prepared by the covalent grafting of polyethylenimine (PEI) molecules with graphene oxide (GO) nanosheets, which later was blended with bulk polyethersulfone (PES) to fabricate the graphene containing nanocomposite membranes (NCMs)...
April 17, 2018: Environmental Science & Technology
keyword
keyword
102474
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"