keyword
MENU ▼
Read by QxMD icon Read
search

Critically

keyword
https://www.readbyqxmd.com/read/29677676/assessing-the-geomorphological-vulnerability-of-arid-beach-dune-systems
#1
Carolina Peña-Alonso, Juan B Gallego-Fernández, Luis Hernández-Calvento, Antonio I Hernández-Cordero, Eduard Ariza
In this study, an arid dune vulnerability index (ADVI) is developed using a system of indicators to evaluate the geomorphological vulnerability of beach-dune systems of arid regions. The indicators are comprised of three analytical dimensions (susceptibility, exposure and resilience) and their corresponding sub-indices and variables and were assessed for eleven sites located in four aeolian sedimentary systems of the Canary archipelago (Spain). The selected sites have varying geomorphological characteristics, vegetation types, marine and wind conditions and human pressure degrees, and have seen different trends in their geomorphological evolution since 1960...
April 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29677675/nitrogen-use-efficiency-and-crop-production-patterns-of-regional-variation-in-the-united-states-1987-2012
#2
Dennis P Swaney, Robert W Howarth, Bongghi Hong
National-level summaries of crop production and nutrient use efficiency, important for international comparisons, only partially elucidate agricultural dynamics within a country. Agricultural production and associated environmental impacts in large countries vary significantly because of regional differences in crops, climate, resource use and production practices. Here, we review patterns of regional crop production, nitrogen use efficiency (NUE), and major inputs of nitrogen to US crops over 1987-2012, based on the Farm Resource Regions developed by the Economic Research Service (USDA-ERS)...
April 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29677649/understanding-the-factors-affecting-the-adsorption-of-lanthanum-using-different-adsorbents-a-critical-review
#3
REVIEW
Sidra Iftekhar, Deepika Lakshmi Ramasamy, Varsha Srivastava, Muhammad Bilal Asif, Mika Sillanpää
Over the past few decades, removal and recovery of Lanthanum (La) have received great attention due to its significance in different industrial processes. In this review, the application of various adsorbents viz. biosorbents, commercial and hybrid materials, nanoparticles, nanocomposites etc. have been summarized in terms of the removal and recovery of La. The influence of various operating parameters including pH, dosage, contact time, temperature, coexisting ions, adsorption kinetics, isotherm and thermodynamics were investigated...
April 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29677586/impact-of-sarcopenic-obesity-on-30-day-mortality-in-critically-ill-patients-with-intra-abdominal-sepsis
#4
Yun Ji, Baoli Cheng, Zhipeng Xu, Hui Ye, Weina Lu, Xiaoqian Luo, Shuiqiao Fu, Xiangming Fang
PURPOSE: This study aimed to investigate the association between sarcopenic obesity and 30-day mortality in critically ill patients with intra-abdominal sepsis. MATERIAL AND METHODS: We analyzed 236 surgical ICU patients with sepsis due to intra-abdominal infection who underwent urgent surgical intervention. Sarcopenia, visceral obesity and sarcopenic obesity were analyzed by computed tomography scans using the third lumbar vertebrae skeletal muscle index and visceral adipose tissue area, using previously reported cutoff values...
March 16, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29677581/in-school-service-predictors-of-employment-for-individuals-with-intellectual-disability
#5
Jiyoon Park, Emily Bouck
BACKGROUNDS/AIMS/METHODS: Although there are many secondary data analyses of the National Longitudinal Transition Study-2 (NLTS-2) to investigate post-school outcome for students with disabilities, there has been a lack of research with in-school service predictors and post-school outcome for students with specific disability categories. METHODS/PROCEDURES: This study was a secondary data analysis of NLTS-2 to investigate the relationship between current employment status and in-school services for individuals with intellectual disability...
April 17, 2018: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/29677547/nanostructured-lipid-carriers-for-site-specific-drug-delivery
#6
REVIEW
Archana Khosa, Satish Reddi, Ranendra N Saha
Nanostructured lipid carriers (NLC), comprises of a blend of solid and liquid lipids which results in a partially crystallized lipid system and imparts many advantages over solid lipid nanoparticles such as enhanced drug loading capacity, drug release modulation flexibility and improved stability. NLC have found numerous applications in both pharmaceutical and cosmetic industry due to ease of preparation, the feasibility of scale-up, biocompatibility, non-toxicity, enhanced targeting efficiency and the possibility of site-specific delivery via various routes of administration...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677539/fibromyalgia-and-nutrition-therapeutic-possibilities
#7
REVIEW
Geir Bjørklund, Maryam Dadar, Salvatore Chirumbolo, Jan Aaseth
Fibromyalgia (FM) is a complex chronic condition of unknown etiology, characterized by deep and widespread pain, sleep problems, cognitive impairment, fatigue, and other well-known functional symptoms. Recently, it has been proposed that an imbalance of nutritive components, including essential metal ions and vitamins, might play a critical role in the development of FM. Muscle pain has been associated with deficiencies in amino acids, magnesium, selenium, vitamins B and D, as well as with the harmful effects of heavy metals, such as mercury, cadmium, and lead...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677517/gpr68-senses-flow-and-is-essential-for-vascular-physiology
#8
Jie Xu, Jayanti Mathur, Emilie Vessières, Scott Hammack, Keiko Nonomura, Julie Favre, Linda Grimaud, Matt Petrus, Allain Francisco, Jingyuan Li, Van Lee, Fu-Li Xiang, James K Mainquist, Stuart M Cahalan, Anthony P Orth, John R Walker, Shang Ma, Viktor Lukacs, Laura Bordone, Michael Bandell, Bryan Laffitte, Yan Xu, Shu Chien, Daniel Henrion, Ardem Patapoutian
Mechanotransduction plays a crucial role in vascular biology. One example of this is the local regulation of vascular resistance via flow-mediated dilation (FMD). Impairment of this process is a hallmark of endothelial dysfunction and a precursor to a wide array of vascular diseases, such as hypertension and atherosclerosis. Yet the molecules responsible for sensing flow (shear stress) within endothelial cells remain largely unknown. We designed a 384-well screening system that applies shear stress on cultured cells...
April 19, 2018: Cell
https://www.readbyqxmd.com/read/29677516/structural-basis-for-teneurin-function-in-circuit-wiring-a-toxin-motif-at-the-synapse
#9
Jingxian Li, Moran Shalev-Benami, Richard Sando, Xian Jiang, Amanuel Kibrom, Jie Wang, Katherine Leon, Christopher Katanski, Olha Nazarko, Yue C Lu, Thomas C Südhof, Georgios Skiniotis, Demet Araç
Teneurins (TENs) are cell-surface adhesion proteins with critical roles in tissue development and axon guidance. Here, we report the 3.1-Å cryoelectron microscopy structure of the human TEN2 extracellular region (ECR), revealing a striking similarity to bacterial Tc-toxins. The ECR includes a large β barrel that partially encapsulates a C-terminal domain, which emerges to the solvent through an opening in the mid-barrel region. An immunoglobulin (Ig)-like domain seals the bottom of the barrel while a β propeller is attached in a perpendicular orientation...
April 19, 2018: Cell
https://www.readbyqxmd.com/read/29677484/degree-of-time-dependency-of-kinetic-coefficient-as-a-function-of-adsorbate-concentration-new-insights-from-adsorption-of-tetracycline-onto-monodispersed-starch-stabilized-magnetic-nanocomposite
#10
Chukwunonso P Okoli, Augustine E Ofomaja
The realization that the observed kinetic coefficient (kobs ) varies with time in most real-time adsorption system, as against the constant value conceived in the most widely-applied adsorption kinetic models, have attracted much attention in recent time. Understanding the factors that control the extent/degree of time dependency (otherwise known as fractal-like kinetics), is therefore central in taking manipulative advantage of this phenomenon in critical adsorption applications. This study therefore deployed non-fractal-like and fractal-like kinetic approach to study the adsorption of tetracycline on monodispersed starch-stabilized magnetite nanocomposite (MSM)...
April 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29677479/rig-i-and-other-rna-sensors-in-antiviral-immunity
#11
Kwan T Chow, Michael Gale, Yueh-Ming Loo
Pattern recognition receptors (PRRs) survey intra- and extracellular spaces for pathogen-associated molecular patterns (PAMPs) within microbial products of infection. Recognition and binding to cognate PAMP ligand by specific PRRs initiates signaling cascades that culminate in a coordinated intracellular innate immune response designed to control infection. In particular, our immune system has evolved specialized PRRs to discriminate viral nucleic acid from host. These are critical sensors of viral RNA to trigger innate immunity in the vertebrate host...
April 26, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29677470/complement-and-the-regulation-of-t-cell-responses
#12
Erin E West, Martin Kolev, Claudia Kemper
The complement system is an evolutionarily ancient key component of innate immunity required for the detection and removal of invading pathogens. It was discovered more than 100 years ago and was originally defined as a liver-derived, blood-circulating sentinel system that classically mediates the opsonization and lytic killing of dangerous microbes and the initiation of the general inflammatory reaction. More recently, complement has also emerged as a critical player in adaptive immunity via its ability to instruct both B and T cell responses...
April 26, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29677464/improving-the-quality-of-preclinical-research-echocardiography-observations-training-and-guidelines-for-measurement
#13
Daniel G Donner, Helen Kiriazis, Xiao-Jun Du, Thomas H Marwick, Julie R McMullen
Informal training in preclinical research may be a contributor to the poor reproducibility of preclinical cardiology research and low rates of translation into clinical research and practice. Mouse echocardiography is a widely used technique to assess cardiac structure and function in drug intervention studies using disease models. The inter-observer variability (IOV) of clinical echocardiographic measurements has been shown to improve with formalized training, but preclinical echocardiography lacks similarly critical standardization of training...
April 20, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29677404/hybrid-scaffolds-of-mg-alloy-mesh-reinforced-polymer-extracellular-matrix-composite-for-critical-sized-calvarial-defect-reconstruction
#14
Yingqi Chen, Sang-Ho Ye, Hideyoshi Sato, Yang Zhu, Vesselin Shanov, Tarannum Tiasha, Antonio D'Amore, Samuel Luketich, Guojiang Wan, William R Wagner
The challenge of developing scaffolds to reconstruct critical-sized calvarial defects without the addition of high levels of exogenous growth factor remains relevant. Both osteogenic regenerative efficacy as well as suitable mechanical properties for the temporary scaffold system are of importance. In this study, a Mg alloy mesh reinforced polymer/demineralized bone matrix (DBM) hybrid scaffold was designed where the hybrid scaffold was fabricated by a concurrent electrospinning/electrospraying of poly(lactic-co-glycolic) (PLGA) polymer and DBM suspended in hyaluronic acid (HA)...
April 20, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29677319/focusing-and-orienting-spatial-attention-differently-modulate-crowding-in-central-and-peripheral-vision
#15
Andrea Albonico, Marialuisa Martelli, Emanuela Bricolo, Eleonora Frasson, Roberta Daini
The allocation of attentional resources to a particular location or object in space involves two distinct processes: an orienting process and a focusing process. Indeed, it has been demonstrated that performance of different visual tasks can be improved when a cue, such as a dot, anticipates the position of the target (orienting), or when its dimensions (as in the case of a small square) inform about the size of the attentional window (focusing). Here, we examine the role of these two components of visuo-spatial attention (orienting and focusing) in modulating crowding in peripheral (Experiment 1 and Experiment 3a) and foveal (Experiment 2 and Experiment 3b) vision...
March 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29677201/an-incremental-clustering-method-based-on-the-boundary-profile
#16
Junpeng Bao, Wenqing Wang, Tianshe Yang, Guan Wu
Many important applications continuously generate data, such as financial transaction administration, satellite monitoring, network flow monitoring, and web information processing. The data mining results are always evolving with the newly generated data. Obviously, for the clustering task, it is better to incrementally update the new clustering results based on the old data rather than to recluster all of the data from scratch. The incremental clustering approach is an essential way to solve the problem of clustering with growing Big Data...
2018: PloS One
https://www.readbyqxmd.com/read/29677181/exploiting-glycan-topography-for-computational-design-of-env-glycoprotein-antigenicity
#17
Wen-Han Yu, Peng Zhao, Monia Draghi, Claudia Arevalo, Christina B Karsten, Todd J Suscovich, Bronwyn Gunn, Hendrik Streeck, Abraham L Brass, Michael Tiemeyer, Michael Seaman, John R Mascola, Lance Wells, Douglas A Lauffenburger, Galit Alter
Mounting evidence suggests that glycans, rather than merely serving as a "shield", contribute critically to antigenicity of the HIV envelope (Env) glycoprotein, representing critical antigenic determinants for many broadly neutralizing antibodies (bNAbs). While many studies have focused on defining the role of individual glycans or groups of proximal glycans in bNAb binding, little is known about the effects of changes in the overall glycan landscape in modulating antibody access and Env antigenicity...
April 20, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29677152/optimization-of-the-critical-parameters-of-the-spherical-agglomeration-crystallization-method-by-the-application-of-the-quality-by-design-approach
#18
Orsolya Gyulai, Anita Kovács, Tamás Sovány, Ildikó Csóka, Zoltán Aigner
This research work presents the use of the Quality by Design (QbD) concept for optimization of the spherical agglomeration crystallization method in the case of the active agent, ambroxol hydrochloride (AMB HCl). AMB HCl spherical crystals were formulated by the spherical agglomeration method, which was applied as an antisolvent technique. Spherical crystals have good flowing properties, which makes the direct compression tableting method applicable. This means that the amount of additives used can be reduced and smaller tablets can be formed...
April 20, 2018: Materials
https://www.readbyqxmd.com/read/29677113/growing-neural-pc-12-cell-on-crosslinked-silica-aerogels-increases-neurite-extension-in-the-presence-of-an-electric-field
#19
Kyle J Lynch, Omar Skalli, Firouzeh Sabri
Externally applied electrical stimulation (ES) has been shown to enhance the nerve regeneration process and to influence the directionality of neurite outgrowth. In addition, the physical and chemical properties of the substrate used for nerve-cell regeneration is critical in fostering regeneration. Previously, we have shown that polyurea-crosslinked silica aerogels (PCSA) exert a positive influence on the extension of neurites by PC-12 cells, a cell-line model widely used to study neurite extension and electrical excitability...
April 20, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29677107/imprinted-oxide-and-mip-oxide-hybrid-nanomaterials-for-chemical-sensors-%C3%A2
#20
REVIEW
Adeel Afzal, Franz L Dickert
The oxides of transition, post-transition and rare-earth metals have a long history of robust and fast responsive recognition elements for electronic, optical, and gravimetric devices. A wide range of applications successfully utilized pristine or doped metal oxides and polymer-oxide hybrids as nanostructured recognition elements for the detection of biologically relevant molecules, harmful organic substances, and drugs as well as for the investigative process control applications. An overview of the selected recognition applications of molecularly imprinted sol-gel phases, metal oxides and hybrid nanomaterials composed of molecularly imprinted polymers (MIP) and metal oxides is presented herein...
April 20, 2018: Nanomaterials
keyword
keyword
12578
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"