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https://www.readbyqxmd.com/read/28813023/accuracy-of-flight-altitude-measured-with-low-cost-gnss-radar-and-barometer-sensors-implications-for-airborne-radiometric-surveys
#1
Matteo Albéri, Marica Baldoncini, Carlo Bottardi, Enrico Chiarelli, Giovanni Fiorentini, Kassandra Giulia Cristina Raptis, Eugenio Realini, Mirko Reguzzoni, Lorenzo Rossi, Daniele Sampietro, Virginia Strati, Fabio Mantovani
Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m from the ground. We equipped an aircraft with seven altimetric sensors (three low-cost GNSS receivers, one inertial measurement unit, one radar altimeter and two barometers) and analyzed ~3 h of data collected over the sea in the (35-2194) m altitude range. At low altitudes (H < 70 m) radar and barometric altimeters provide the best performances, while GNSS data are used only for barometer calibration as they are affected by a large noise due to the multipath from the sea...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812991/the-retinoblastoma-rb-tumor-suppressor-pushing-back-against-genome-instability-on-multiple-fronts
#2
REVIEW
Renier Vélez-Cruz, David G Johnson
The retinoblastoma (RB) tumor suppressor is known as a master regulator of the cell cycle. RB is mutated or functionally inactivated in the majority of human cancers. This transcriptional regulator exerts its function in cell cycle control through its interaction with the E2F family of transcription factors and with chromatin remodelers and modifiers that contribute to the repression of genes important for cell cycle progression. Over the years, studies have shown that RB participates in multiple processes in addition to cell cycle control...
August 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28812511/i-can-t-believe-the-nmc
#3
John Hill
I was disgusted to read, at a time when nurses are fighting for a pay award of above 1%, that the Nursing and Midwifery Council sees fit to increase the remuneration package of their chief executive by £36,000 (news, 26 July).
August 16, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28811975/chemotherapeutic-agent-mediated-elimination-of-myeloid-derived-suppressor-cells
#4
REVIEW
Zibing Wang, Brian Till, Quanli Gao
Immunotherapy has shown great promise in the fight against cancer, as evidenced by the clinical efficacy of chimeric antigen receptor T cells in hematologic malignancies and checkpoint blockade in certain solid tumors. However, a considerable number of patients fail to respond to these therapies. Induction of myeloid-derived suppressor cells (MDSCs) by growing tumors has been shown to be one important factor limiting the efficacy of cancer immunotherapy. Recently, several chemotherapeutic agents used in conventional cancer chemotherapy have been found to reduce MDSC numbers in tumor tissues as well as in the peripheral lymphoid organs, and combining these agents with immunotherapy improved survival of tumor-bearing hosts...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811888/performance-test-and-verification-of-an-off-the-shelf-automated-avian-radar-tracking-system
#5
Roel May, Yngve Steinheim, Pål Kvaløy, Roald Vang, Frank Hanssen
Microwave radar is an important tool for observation of birds in flight and represents a tremendous increase in observation capability in terms of amount of surveillance space that can be covered at relatively low cost. Based on off-the-shelf radar hardware, automated radar tracking systems have been developed for monitoring avian movements. However, radar used as an observation instrument in biological research has its limitations that are important to be aware of when analyzing recorded radar data. This article describes a method for exploring the detection capabilities of a dedicated short-range avian radar system used inside the operational Smøla wind-power plant...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28811533/plasma-metabolomics-profiling-of-maintenance-hemodialysis-based-on-capillary-electrophoresis-time-of-flight-mass-spectrometry
#6
Shuxin Liu, Lichao Wang, Chunxiu Hu, Xin Huang, Hong Liu, Qiuhui Xuan, Xiaohui Lin, Xiaojun Peng, Xin Lu, Ming Chang, Guowang Xu
Uremia has been a rapidly increasing health problem in China. Hemodialysis (HD) is the main renal replacement therapy for uremia. The results of large-scale clinical trials have shown that the HD pattern is crucial for long-term prognosis of maintenance hemodialysis (MHD) in uremic patients. Plasma metabolism is very important for revealing the biological insights linked to the therapeutic effects of the HD pattern on uremia. Alteration of plasma metabolites in uremic patients in response to HD therapy has been reported...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811532/protein-expression-changes-caused-by-spaceflight-as-measured-for-18-russian-cosmonauts
#7
Irina M Larina, Andrew J Percy, Juncong Yang, Christoph H Borchers, Andrei M Nosovsky, Anatoli I Grigoriev, Evgeny N Nikolaev
The effects of spaceflight on human physiology is an increasingly studied field, yet the molecular mechanisms driving physiological changes remain unknown. With that in mind, this study was performed to obtain a deeper understanding of changes to the human proteome during space travel, by quantitating a panel of 125 proteins in the blood plasma of 18 Russian cosmonauts who had conducted long-duration missions to the International Space Station. The panel of labeled prototypic tryptic peptides from these proteins covered a concentration range of more than 5 orders of magnitude in human plasma...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811040/implant-specific-follow-up-imaging-of-treated-intracranial-aneurysms-tof-mra-vs-metal-artifact-reduced-intravenous-flat-panel-computed-tomography-angiography-fpcta
#8
N H Hänsel, G A Schubert, B Scholz, O Nikoubashman, A E Othman, M Wiesmann, R Pjontek, M A Brockmann
AIM: To compare the diagnostic quality of time-of-flight magnetic resonance angiography (TOF-MRA) and metal-artefact-reduction (MAR) flat-panel-detector computed tomography angiography (FPCTA) and to determine the imaging technique best suited for evaluation endovascular and surgically treated aneurysms. METHODS: The image quality of TOF-MRA and MAR-FPCTA of 44 intracranial implants (coiling: n=20; clipping: n=15; coiling + stenting: n=9) in a patient cohort of 25 was evaluated by two independent readers...
August 12, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28811030/targeted-analyte-deconvolution-and-identification-by-four-way-parallel-factor-analysis-using-three-dimensional-gas-chromatography-with-mass-spectrometry-data
#9
Nathanial E Watson, Sarah E Prebihalo, Robert E Synovec
Comprehensive three-dimensional gas chromatography with time-of-flight mass spectrometry (GC(3)-TOFMS) creates an opportunity to explore a new paradigm in chemometric analysis. Using this newly described instrument and the well understood Parallel Factor Analysis (PARAFAC) model we present one option for utilization of the novel GC(3)-TOFMS data structure. We present a method which builds upon previous work in both GC(3) and targeted analysis using PARAFAC to simplify some of the implementation challenges previously discovered...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810963/treating-decompression-sickness-military-flight-simulation-site-community-hospital-partnership
#10
Whitney C Rhodes, George Hertner, Robert Price, Lani Finck, Claudia Temmer, Tracy Cushing, Kathleen Flarity
BACKGROUND: High-altitude flight simulation familiarizes military trainees with the symptoms of hypoxia to prepare them for emergency situations. Decompression sickness (DCS) can occur as a result of these simulations. In cases when ground-level supplemental oxygen does not resolve symptoms, hyperbaric oxygen (HBO) therapy is indicated. Many military hyperbaric chambers have been closed because of cost reductions, necessitating partnerships with community hospitals to ensure access to treatment...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810801/may-dietary-supplementation-augment-respiratory-burst-in-wound-site-inflammatory-cells
#11
Amitava Das, Ryan Dickerson, Piya Das Ghatak, Gayle Gordillo, Scott Chaffee, Abhijoy Saha, Savita Khanna, Sashwati Roy
Persistent infection contributes to wound chronicity. At the wound-site, NADPH oxidase activity in immune cells fights infection to enable the healing process. Fermented Papaya Preparation (FPP) is a carbohydrate-rich nutritional supplement that has demonstrated ability to bolster respiratory burst in experimental rodent systems. In FPP, glucose co-exists with fructose and maltose in addition to multiple other sugar alcohols such as inositol. We have previously reported that FPP supplementation augments wound healing in diabetic mice via improvement of respiratory-burst activity of wound innate immune cells...
August 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28810763/the-collision-free-photochemistry-of-methyl-azide-at-157-nm-mechanism-and-energy-release
#12
Alfredo Quinto-Hernandez, Shih-Huang Lee, Alec M Wodtke
Synchrotron radiation VUV-photoionization based photofragment translational spectroscopy was used to identify the primary and secondary photodissociation reactions of methyl azide (CH3N3) at 157 nm under collision-free conditions. Two primary dissociation channels are identified, leading to CH3 + N3 (the radical channel) and CH3N + N2 (the molecular elimination channel). The last channel is the major dissociation pathway, but unlike work at longer photolysis wavelengths, here, the radical channel exclusively produces the higher energy isomer cyclic-N3...
August 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28809958/a-cre1-regulated-cluster-is-responsible-for-light-dependent-production-of-dihydrotrichotetronin-in-trichoderma-reesei
#13
Alberto Alonso Monroy, Eva Stappler, Andre Schuster, Michael Sulyok, Monika Schmoll
Changing light conditions, caused by the rotation of earth resulting in day and night or growth on the surface or within a substrate, result in considerably altered physiological processes in fungi. For the biotechnological workhorse Trichoderma reesei, regulation of glycoside hydrolase gene expression, especially cellulase expression was shown to be a target of light dependent gene regulation. Analysis of regulatory targets of the carbon catabolite repressor CRE1 under cellulase inducing conditions revealed a secondary metabolite cluster to be differentially regulated in light and darkness and by photoreceptors...
2017: PloS One
https://www.readbyqxmd.com/read/28809925/salivary-peptidome-profiling-analysis-for-occurrence-of-new-carious-lesions-in-patients-with-severe-early-childhood-caries
#14
Chang Tian, Xiangyu Sun, Xiaochen Liu, Xin Huang, Feng Chen, Shuguo Zheng
This study aimed to identify differences of peptide profiles in stimulated whole saliva among children with and without occurrence of new carious lesions, and to provide a simple way for early diagnosis and prevention of the relapse of severe early childhood caries (s-ECC). Overall, 26 children aged 3-4 years were selected out from all the children in the kindergarten to be involved in the present study, among them 13 were diagnosed as s-ECC and underwent dental treatment, whilst the other 13 were matched by age and sex as control...
2017: PloS One
https://www.readbyqxmd.com/read/28809146/mycobacterium-talmoniae-sp-nov-a-slowly-growing-mycobacterium-isolated-from-human-respiratory-samples
#15
Rebecca M Davidson, Mary Ann DeGroote, Jamie L Marola, Sarah Buss, Victoria Jones, Michael R McNeil, Alison G Freifeld, L Elaine Epperson, Nabeeh A Hasan, Mary Jackson, Peter C Iwen, Max Salfinger, Michael Strong
A novel slowly growing, non-chromogenic species of the class Actinobacteria was isolated from a human respiratory sample in Nebraska, USA, in 2012. Analysis of the internal transcribed spacer sequence supported placement into the genus Mycobacterium with high sequence similarity to a previously undescribed strain isolated from a patient respiratory sample from Oregon, USA, held in a collection in Colorado, USA, in 2000. The two isolates were subjected to phenotypic testing and whole genome sequencing and found to be indistinguishable...
August 15, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28808998/microfluidics-mass-spectrometry-of-protein-carbohydrate-interactions-applications-to-the-development-of-therapeutics-and-biomarker-discovery
#16
Alina D Zamfir
The functional interactions of carbohydrates and their protein receptors are the basis of biological events critical to the evolution of pathological states. Hence, for the past years, such interactions have become the focus of research for the development of therapeutics and discovery of novel glycan biomarkers based on their binding affinity. Due to the high sensitivity, throughput, reproducibility, and capability to ionize minor species in heterogeneous mixtures, microfluidics-mass spectrometry (MS) has recently emerged as a method of choice in protein-glycan interactomics...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28808947/the-sydney-heart-bank-improving-translational-research-while-eliminating-or-reducing-the-use-of-animal-models-of-human-heart-disease
#17
REVIEW
C G Dos Remedios, S P Lal, A Li, J McNamara, A Keogh, P S Macdonald, R Cooke, E Ehler, R Knöll, S B Marston, J Stelzer, H Granzier, C Bezzina, S van Dijk, F De Man, G J M Stienen, J Odeberg, F Pontén, W Linke, J van der Velden
The Sydney Heart Bank (SHB) is one of the largest human heart tissue banks in existence. Its mission is to provide high-quality human heart tissue for research into the molecular basis of human heart failure by working collaboratively with experts in this field. We argue that, by comparing tissues from failing human hearts with age-matched non-failing healthy donor hearts, the results will be more relevant than research using animal models, particularly if their physiology is very different from humans. Tissue from heart surgery must generally be used soon after collection or it significantly deteriorates...
August 14, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28808404/in-vitro-antioxidant-and-antiproliferative-activities-of-various-solvent-fractions-from-clerodendrum-viscosum-leaves
#18
Anil Khushalrao Shendge, Tapasree Basu, Dipankar Chaudhuri, Sourav Panja, Nripendranath Mandal
BACKGROUND: Free radicals such as reactive oxygen and nitrogen species, generated in the body, play an important role in the fulfillment of various physiological functions but their imbalance in the body lead to cellular injury and various clinical disorders such as cancer, neurodegenaration, and inflammation. OBJECTIVE: The objective of this study is to fight this problem, natural antioxidant from plants can be considered as possible protective agents against various diseases such as cancer which might also modify the redox microenvironment to reduce the genetic instability...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808045/fighting-tubulin-targeting-anticancer-drug-toxicity-and-resistance
#19
REVIEW
Roberta Visconti, Domenico Grieco
Tubulin-targeting drugs, like taxanes and vinca alkaloids, are among the most effective anticancer therapeutics used in the clinic today. Specifically, anti-microtubule cancer drugs (AMCDs) have proven to be effective in the treatment of castration-resistant prostate cancer and triple-negative breast cancer. AMCDs, however, have limiting toxicities that include neutropenia and neurotoxicity, and, in addition, tumor cells can become resistant to the drugs after long-term use. Co-targeting mitotic progression/slippage with inhibition of the protein kinases WEE1 and MYT1 that regulate CDK1 kinase activity may improve AMCD efficacy, reducing the acquisition of resistance by the tumor and side effects from the drug and/or its vehicle...
September 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28807542/rapid-and-simple-analysis-of-disease-associated-biomarkers-of-taiwanese-patients-with-schizophrenia-using-matrix-assisted-laser-desorption-ionization-mass-spectrometry
#20
Tiao-Lai Huang, Li-Hua Lo, Jentaie Shiea, Hung Su
BACKGROUND: Matrix-assisted laser desorption ionization/time-of-flight mass spectrometry (MALDI-TOF MS) is an extremely sensitive analytical tool for characterizing biological compounds in bio samples. In this study, we applied MALDI-TOF MS to assess potential protein biomarkers in the peripheral blood mononuclear cells (PBMCs) of patients with schizophrenia in the acute phase, recovery phase and healthy controls in Taiwan. METHODS: We recruited 40 participants, including 20 pairs of patients diagnosed with schizophrenia in the acute phase, after four-week treatment with drug in the recovery phase, and 20 healthy controls...
August 11, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
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