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https://www.readbyqxmd.com/read/28431378/development-of-novel-alternative-biodiesel-fuels-for-reducing-pm-emissions-and-pm-related-genotoxicity
#1
Po-Ming Yang, Chia-Chi Wang, Ying-Chi Lin, Syu-Ruei Jhang, Li-Jung Lin, Yuan-Chung Lin
This paper intend to investigate the effects of biodiesel fuel blends comprising of waste-cooking oil and butanol-diesel (B10W10-B10W40) under steady-state conditions. Both particulate organic carbon (OC) and PM including PM2.5 and PM10 significantly decreased with the increasing percentage of biodiesel fuel blends. The fuel blend of B10W40 also demonstrated the most effective function in reducing the emissions of PM10 and PM2.5 in the volume by 59.4% and 57.7%, respectively. Moreover, the emissions of nitrogen oxides decreased with the blending of B10W10-B10W40 (13...
April 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28431372/down-flow-fixed-structured-bed-reactor-an-innovative-reactor-configuration-applied-to-acid-mine-drainage-treatment-and-metal-recovery
#2
Leandro Augusto Gouvêa de Godoi, Eugenio Foresti, Márcia Helena Rissato Zamariolli Damianovic
A down-flow fixed-structured bed reactor (DFSBR) was operated for 277 days treating a mixture of synthetic substrates simulating an iron-rich acid mine drainage (AMD) and the soluble fraction of a sugarcane vinasse. The synthetic sugarcane vinasse was used as electron donor for biological sulfate-reduction, resulting in influent chemical oxygen demand (COD) close to 4000 mg L(-1) and volumetric organic loading rate of 4.8 g L(-1)d(-1). The influent sulfate concentration was kept close to 2000 mg L(-1) (volumetric sulfate loading rate of 2...
April 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28431241/akt-pkb-signaling-navigating-the-network
#3
REVIEW
Brendan D Manning, Alex Toker
The Ser and Thr kinase AKT, also known as protein kinase B (PKB), was discovered 25 years ago and has been the focus of tens of thousands of studies in diverse fields of biology and medicine. There have been many advances in our knowledge of the upstream regulatory inputs into AKT, key multifunctional downstream signaling nodes (GSK3, FoxO, mTORC1), which greatly expand the functional repertoire of AKT, and the complex circuitry of this dynamically branching and looping signaling network that is ubiquitous to nearly every cell in our body...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28431194/closed-form-equation-to-estimate-the-dielectric-properties-of-biological-tissues-as-a-function-of-age
#4
Beadaa Mohammed, Konstanty Bialkowski, Amin Abbosh, Paul C Mills, Andrew P Bradley
Developing microwave systems for biomedical applications requires accurate dielectric properties of biological tissues for reliable modeling before prototyping and subject testing. Dielectric properties of tissues decrease with age due to the change in their water content, but there are no detailed age-dependent data, especially for young tissue-like newborns, in the literature. In this article, an age-dependent formula to predict the dielectric properties of biological tissues was derived. In the proposed method, the variation of water concentration in each type of tissue as a function of age was used to calculate its relative permittivity and conductivity...
April 21, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28431131/dnaprodb-an-interactive-tool-for-structural-analysis-of-dna-protein-complexes
#5
Jared M Sagendorf, Helen M Berman, Remo Rohs
Many biological processes are mediated by complex interactions between DNA and proteins. Transcription factors, various polymerases, nucleases and histones recognize and bind DNA with different levels of binding specificity. To understand the physical mechanisms that allow proteins to recognize DNA and achieve their biological functions, it is important to analyze structures of DNA-protein complexes in detail. DNAproDB is a web-based interactive tool designed to help researchers study these complexes. DNAproDB provides an automated structure-processing pipeline that extracts structural features from DNA-protein complexes...
April 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28431105/extinction-vs-rapid-radiation-the-juxtaposed-evolutionary-histories-of-coelotine-spiders-support-the-eocene-oligocene-orogenesis-of-the-tibetan-plateau
#6
Zhe Zhao, Shuqiang Li
Evolutionary biology has long been concerned with how changing environments affect and drive the spatiotemporal development of organisms. Coelotine spiders (Agelenidae: Coelotinae) are common species in the temperate and subtropical areas of the Northern Hemisphere. Their long evolutionary history and the extremely imbalanced distribution of species richness suggest that Eurasian environments, especially since the Cenozoic, are the drivers of their diversification. We use phylogenetics, molecular dating, ancestral area reconstructions, diversity, and ecological niche analyses to investigate the spatiotemporal evolution of 286 coelotine species from throughout the region...
April 20, 2017: Systematic Biology
https://www.readbyqxmd.com/read/28431090/current-status-of-the-blue-butterfly-in-fukushima-research
#7
Joji M Otaki, Wataru Taira
Adverse biological impacts of the Fukushima nuclear accident have been revealed using the pale grass blue butterfly, Zizeeria maha, since 2012, which were often considered incompatible with the conventional understanding of radiation biology. This discrepancy likely originates from different system conditions and methodologies. In this article, we first respond to comments from the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) regarding our study; "technical errors" in unit usage and mathematical models noted by UNSCEAR are not errors but reflect our research philosophy not to introduce theoretical assumptions associated with unit conversion and mathematical fit...
April 18, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28430973/biological-functions-of-fucose-in-mammals
#8
Michael Schneider, Esam Al-Shareffi, Robert S Haltiwanger
Fucose is a 6-deoxy hexose in the L-configuration found in a large variety of different organisms. In mammals, fucose is incorporated into N-glycans, O-glycans and glycolipids by thirteen fucosyltransferases, all of which utilize the nucleotide charged form, GDP-fucose, to modify targets. Three of the fucosyltransferases, FUT8, FUT12/POFUT1, and FUT13/POFUT2, are essential for proper development in mice. Fucose modifications have also been implicated in many other biological functions including immunity and cancer...
April 18, 2017: Glycobiology
https://www.readbyqxmd.com/read/28430873/bioinformatics-in-germany-toward-a-national-level-infrastructure
#9
Andreas Tauch, Arwa Al-Dilaimi
The German Network for Bioinformatics Infrastructure (de.NBI) is a national initiative funded by the German Federal Ministry of Education and Research (BMBF). The mission of de.NBI is (i) to provide high-quality bioinformatics services to users in basic and applied life sciences research from academia, industry and biomedicine; (ii) to offer bioinformatics training to users in Germany and Europe through a wide range of workshops and courses; and (iii) to foster the cooperation of the German bioinformatics community with international network structures such as the European life-sciences Infrastructure for biological Information (ELIXIR)...
April 18, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28430547/enhancing-insights-into-pulmonary-vascular-disease-pvd-through-a-precision-medicine-approach-a-joint-nhlbi-cmref-workshop-report
#10
John H Newman, Stuart Rich, Steven H Abman, John H Alexander, John Barnard, Gerald J Beck, Raymond L Benza, Todd M Bull, Stephen Y Chan, Hyung J Chun, Declan Doogan, Jocelyn Dupuis, Serpil C Erzurum, Robert P Frantz, Mark Geraci, Hunter Gillies, Mark Gladwin, Michael P Gray, Anna R Hemnes, Roy S Herbst, Adrian F Hernandez, Nicholas S Hill, Evelyn M Horn, Kendall Hunter, Zhi-Cheng Jing, Roger Johns, Sanjay Kaul, Steven M Kawut, Tim Lahm, Jane A Leopold, Greg D Lewis, Stephen C Mathai, Vallerie V McLaughlin, Evangelos D Michelakis, Steven D Nathan, William Nichols, Grier Page, Marlene Rabinovitch, Jonathan Rich, Franz Rischard, Sharon Rounds, Sanjiv J Shah, Victor F Tapson, Naomi Lowy, Norman Stockbridge, Gail Weinmann, Lei Xiao
The Division of Lung Diseases of the National Heart, Lung and Blood Institute, (NHLBI) and the Cardiovascular Medical Education and Research Fund (CMREF), held a workshop to discuss to leverage of the anticipated scientific output from the recently launched "Redefining Pulmonary Hypertension (PH) through Pulmonary Vascular Disease Phenomics" (PVDOMICS) program. PVDOMICS is a protocol driven network to analyze PH patient populations to define novel pulmonary vascular disease (PVD) phenotypes. Basic, translational and clinical investigators, patient advocacy organizations, regulatory agencies, and pharmaceutical industry experts discussed the application of precision medicine to PVD clinical trials...
April 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28430301/towards-a-bioengineered-kidney-recellularization-strategies-for-decellularized-native-kidney-scaffolds
#11
Michele Fedecostante, Oana G Onciu, Koen G C Westphal, Rosalinde Masereeuw
Patients with end-stage renal disease often undergo dialysis as a partial substitute for kidney function while waiting for their only treatment option: a kidney transplant. Several research directions emerged for alternatives in support of the ever-growing numbers of patients. Recent years brought big steps forward in the field, with researchers questioning and improving the current dialysis devices as well as moving towards the design of a bioengineered kidney. Whole-organ engineering is also being explored as a possibility, making use of animal or human kidney scaffolds for engineering a transplantable organ...
April 20, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28430238/microsensors-based-on-a-whispering-gallery-mode-in-algan-microdisks-undercut-by-hydrogen-environment-thermal-etching
#12
Tetsuya Kouno, Masaru Sakai, Hoshi Takeshima, Sho Suzuki, Akihiko Kikuchi, Katsumi Kishino, Kazuhiko Hara
AlGaN microdisks were fabricated via a top-down process using electron-beam lithography, inductively coupled plasma reactive-ion etching, and hydrogen-environment thermal etching from commercial epitaxial wafers with a 100-300 nm thick AlGaN layer grown on a c-plane GaN layer by metal-organic chemical vapor deposition. The hydrogen-environment thermal etching performed well in undercutting the AlGaN microdisks owing to the selective etching for the GaN layer. The AlGaN microdisks acted as the whispering gallery mode (WGM) optical microresonators, exhibiting sharp resonant peaks in room temperature photoluminescence spectra...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430205/controlled-membrane-translocation-provides-a-mechanism-for-signal-transduction-and-amplification
#13
Matthew J Langton, Flore Keymeulen, Maria Ciaccia, Nicholas H Williams, Christopher A Hunter
Transmission and amplification of chemical signals across lipid bilayer membranes is of profound significance in many biological processes, from the development of multicellular organisms to information processing in the nervous system. In biology, membrane-spanning proteins are responsible for the transmission of chemical signals across membranes, and signal transduction is often associated with an amplified signalling cascade. The ability to reproduce such processes in artificial systems has potential applications in sensing, controlled drug delivery and communication between compartments in tissue-like constructs of synthetic vesicles...
May 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28430190/tuning-underwater-adhesion-with-cation-%C3%AF-interactions
#14
Matthew A Gebbie, Wei Wei, Alex M Schrader, Thomas R Cristiani, Howard A Dobbs, Matthew Idso, Bradley F Chmelka, J Herbert Waite, Jacob N Israelachvili
Cation-π interactions drive the self-assembly and cohesion of many biological molecules, including the adhesion proteins of several marine organisms. Although the origin of cation-π bonds in isolated pairs has been extensively studied, the energetics of cation-π-driven self-assembly in molecular films remains uncharted. Here we use nanoscale force measurements in combination with solid-state NMR spectroscopy to show that the cohesive properties of simple aromatic- and lysine-rich peptides rival those of the strong reversible intermolecular cohesion exhibited by adhesion proteins of marine mussel...
May 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28430138/nanomaterials-as-assisted-matrix-of-laser-desorption-ionization-time-of-flight-mass-spectrometry-for-the-analysis-of-small-molecules
#15
REVIEW
Minghua Lu, Xueqing Yang, Yixin Yang, Peige Qin, Xiuru Wu, Zongwei Cai
Matrix-assisted laser desorption/ionization (MALDI), a soft ionization method, coupling with time-of-flight mass spectrometry (TOF MS) has become an indispensible tool for analyzing macromolecules, such as peptides, proteins, nucleic acids and polymers. However, the application of MALDI for the analysis of small molecules (<700 Da) has become the great challenge because of the interference from the conventional matrix in low mass region. To overcome this drawback, more attention has been paid to explore interference-free methods in the past decade...
April 21, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28430017/two-nramp6-isoforms-function-as-iron-and-manganese-transporters-and-contribute-to-disease-resistance-in-rice
#16
Cristina Peris-Peris, Albert Serra-Cardona, Ferrán Sánchez-Sanuy, Sonia Campo, Joaquin Ariño, Blanca San Segundo
Metal ions are essential elements for all living organisms. However, metals can be toxic when present in excess. In plants, metal homeostasis is partly achieved through the function of metal transporters, including the diverse natural resistance-associated macrophage proteins (NRAMP). Among them, the OsNramp6 gene encodes a previously uncharacterized member of the rice NRAMP family that undergoes alternative splicing to produce different NRAMP6 proteins. In this work, we determined the metal transport activity and biological role of the full-length and the shortest NRAMP6 proteins (l-NRAMP6 and s-NRAMP6, respectively)...
April 21, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28429887/effects-of-aluminium-on-long-term-memory-in-rats-and-on-sirt1-mediating-the-transcription-of-creb-dependent-gene-in-hippocampus
#17
Dongying Yan, Cuihong Jin, Yang Cao, Lulu Wang, Xiaobo Lu, Jinghua Yang, Shengwen Wu, Yuan Cai
Epidemiological investigations have shown that aluminium (Al) is an important neurotoxicant which can be absorbed by organisms via various routes. Previous studies have confirmed that exposure to Al could cause neurodegenerative diseases, decline CREB phosphorylation and then down-regulate the transcription and protein expression of its target genes including BDNF. However, recent studies revealed that CREB activation alone was far from enough to activate the expression of long-term memory (LTM) related genes; there might be other regulatory factors involved in this process...
April 21, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28429833/the-microbially-mediated-soil-organic-carbon-loss-under-degenerative-succession-in-an-alpine-meadow
#18
Yuguang Zhang, Xiao Liu, Jing Cong, Hui Lu, Yuyu Sheng, Xiulei Wang, Diqiang Li, Xueduan Liu, Huaqun Yin, Jizhong Zhou, Ye Deng
Land-cover change has long been recognized as having marked effect on the amount of soil organic carbon (SOC). However, the microbially-mediated processes and mechanisms on SOC are still unclear. In this study, the soil samples in a degenerative succession from alpine meadow to alpine steppe meadow in the Qinghai-Tibetan Plateau were analyzed using high-throughput technologies, including Illumina sequencing and GeoChip functional gene arrays. The soil microbial community structure and diversity were significantly (P < 0...
April 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28429721/a-mouse-tissue-transcription-factor-atlas
#19
Quan Zhou, Mingwei Liu, Xia Xia, Tongqing Gong, Jinwen Feng, Wanlin Liu, Yang Liu, Bei Zhen, Yi Wang, Chen Ding, Jun Qin
Transcription factors (TFs) drive various biological processes ranging from embryonic development to carcinogenesis. Here, we employ a recently developed concatenated tandem array of consensus TF response elements (catTFRE) approach to profile the activated TFs in 24 adult and 8 fetal mouse tissues on proteome scale. A total of 941 TFs are quantitatively identified, representing over 60% of the TFs in the mouse genome. Using an integrated omics approach, we present a TF network in the major organs of the mouse, allowing data mining and generating knowledge to elucidate the roles of TFs in various biological processes, including tissue type maintenance and determining the general features of a physiological system...
April 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28429717/exploratory-adaptation-in-large-random-networks
#20
Hallel I Schreier, Yoav Soen, Naama Brenner
The capacity of cells and organisms to respond to challenging conditions in a repeatable manner is limited by a finite repertoire of pre-evolved adaptive responses. Beyond this capacity, cells can use exploratory dynamics to cope with a much broader array of conditions. However, the process of adaptation by exploratory dynamics within the lifetime of a cell is not well understood. Here we demonstrate the feasibility of exploratory adaptation in a high-dimensional network model of gene regulation. Exploration is initiated by failure to comply with a constraint and is implemented by random sampling of network configurations...
April 21, 2017: Nature Communications
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