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https://www.readbyqxmd.com/read/29245135/acidogenic-fermentation-of-iron-enhanced-primary-sedimentation-sludge-under-different-ph-conditions-for-production-of-volatile-fatty-acids
#1
Lin Lin, Xiao-Yan Li
Iron-based chemically enhanced primary sedimentation (CEPS) is increasingly adopted for wastewater treatment in mega cities, producing a large amount of sludge (Fe-sludge) with a high content of organics for potential organic resource recovery. In this experimental study, acidogenic fermentation was applied treat FeCl3-based CEPS sludge for production of volatile fatty acids (VFAs) at different pHs. Batch fermentation tests on the Fe-sludge with an organic content of 10 g-COD/L showed that the maximum VFAs production reached 2782...
December 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/29245129/a-novel-approach-of-modeling-continuous-dark-hydrogen-fermentation
#2
Maria Alexandropoulou, Georgia Antonopoulou, Gerasimos Lyberatos
In this study a novel modeling approach for describing fermentative hydrogen production in a continuous stirred tank reactor (CSTR) was developed, using the Aquasim modeling platform. This model accounts for the key metabolic reactions taking place in a fermentative hydrogen producing reactor, using fixed stoichiometry but different reaction rates. Biomass yields are determined based on bioenergetics. The model is capable of describing very well the variation in the distribution of metabolic products for a wide range of hydraulic retention times (HRT)...
December 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29245125/delayed-type-hypersensitivity-to-metals-in-connective-tissue-diseases-and-fibromyalgia
#3
REVIEW
Geir Bjørklund, Maryam Dadar, Jan Aaseth
Rheumatic diseases include a group of autoimmune disorders with environmental and genetic etiology that are characterized as a subgroup of connective tissue diseases (CTD). Rheumatoid arthritis (RA) often involves the small joints of the hands in a symmetrical fashion that can lead to loss of joint function, and RA, as well as Sjögren's syndrome (SS) and other rheumatic diseases, are often accompanied by sensitivity to metals. Numerous investigations on metal sensitivity were evaluated in this review. A detailed metal exposure history was collected by different evaluation of studies...
December 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/29245124/bisphenol-and-phthalate-concentrations-and-its-determinants-among-pregnant-women-in-a-population-based-cohort-in-the-netherlands-2004-5
#4
Elise M Philips, Vincent W V Jaddoe, Alexandros G Asimakopoulos, Kurunthachalam Kannan, Eric A P Steegers, Susana Santos, Leonardo Trasande
BACKGROUND: Exposure to bisphenols and phthalates in pregnancy may lead to adverse health effects in women themselves and their offspring. OBJECTIVE: To describe first trimester bisphenol and phthalate urine concentrations, including bisphenol and phthalate replacements, and determine nutritional, socio-demographic and lifestyle related determinants. METHODS: In a population-based prospective cohort of 1396 mothers, we measured first trimester bisphenol, phthalate and creatinine urine concentrations (samples collected in 2004-2005, median gestational age 12...
December 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/29245122/reduction-of-cancer-cell-viability-by-synergistic-combination-of-photodynamic-treatment-with-the-inhibition-of-the-id-protein-family
#5
Cornelia Roschger, Thomas Verwanger, Barbara Krammer, Chiara Cabrele
The inhibitor of DNA binding and cell differentiation (Id) proteins are dominant negative regulators of the helix-loop-helix transcription factor family and play a key role during development as well as in vascular disorders and cancer. In fact, impairing the Id-protein activity in cancer cells reduces cell growth and even chemoresistance. Recently, we have shown that a synthetic Id-protein ligand (1Y) consisting of a cyclic nonapeptide can reduce the viability of the two breast cancer cell lines MCF-7 and T47D and of the bladder cancer cells T24 to about 50% at concentrations ≥100μM...
December 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29245108/learning-and-transfer-of-working-memory-gating-policies
#6
Apoorva Bhandari, David Badre
knowledge about the tasks we encounter enables us to rapidly and flexibly adapt to novel task contexts. Previous research has focused primarily on abstract rules that leverage shared structure in stimulus-response (S-R) mappings as the basis of such task knowledge. Here we provide evidence that working memory (WM) gating policies - a type of control policy required for internal control of WM during a task - constitute a form of abstract task knowledge that can be transferred across contexts. In two experiments, we report specific evidence for the transfer of selective WM gating policies across changes of task context...
December 12, 2017: Cognition
https://www.readbyqxmd.com/read/29245053/influence-of-diabetes-on-the-foreign-body-response-to-nitric-oxide-releasing-implants
#7
Robert J Soto, Elizabeth P Merricks, Dwight A Bellinger, Timothy C Nichols, Mark H Schoenfisch
The foreign body response (FBR) to nitric oxide (NO)-releasing subcutaneous implants was compared between healthy and streptozotocin-induced diabetic swine by evaluating inflammation, collagen capsule formation, and angiogenesis. Steel wire substrates were first modified with polyurethane membranes capable of diverse NO-release kinetics (NO fluxes and release durations of 0.8-630.0 pmol cm-2 s-1 and 2-13 d, respectively). The NO-releasing materials were implanted in the subcutis for 3, 10, or 25 d for histological and immunohistochemical evaluation of the FBR...
November 30, 2017: Biomaterials
https://www.readbyqxmd.com/read/29245040/characterising-the-online-weapons-trafficking-on-cryptomarkets
#8
Damien Rhumorbarbe, Denis Werner, Quentin Gilliéron, Ludovic Staehli, Julian Broséus, Quentin Rossy
Weapons related webpages from nine cryptomarkets were manually duplicated in February 2016. Information about the listings (i.e. sales proposals) and vendors' profiles were extracted to draw an overview of the actual online trafficking of weapons. Relationships between vendors were also inferred through the analysis of online digital traces and content similarities. Weapons trafficking is mainly concentrated on two major cryptomarkets. Besides, it accounts for a very small proportion of the illicit trafficking on cryptomarkets compared to the illicit drugs trafficking...
December 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29245015/snapshot-abscisic-acid-signaling
#9
Felix Hauser, Zixing Li, Rainer Waadt, Julian I Schroeder
Abscisic acid is a key phytohormone produced in response to abiotic stress conditions and is an activator of abiotic stress resistance mechanisms and a regulator during diverse developmental stages in plants. This SnapShot explores how ABA signaling operates and coordinates resistance during stress responses and modulates plant development.
December 14, 2017: Cell
https://www.readbyqxmd.com/read/29245000/does-traumatic-brain-injury-hold-the-key-to-the-alzheimer-s-puzzle
#10
Robert E Becker, Dimitrios Kapogiannis, Nigel H Greig
INTRODUCTION: Neurodegenerative disorders have been a graveyard for hundreds of well-intentioned efforts at drug discovery and development. Concussion and other traumatic brain injuries (TBIs) and Alzheimer's disease (AD) share many overlapping pathologies and possible clinical links. METHODS: We searched the literature since 1995 using MEDLINE and Google Scholar for the terms concussion, AD, and shared neuropathologies. We also studied a TBI animal model as a supplement to transgenic (Tg) mouse AD models for evaluating AD drug efficacy by preventing neuronal losses...
December 12, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29244969/treatment-of-open-upper-limb-injuries-with-infection-prevention-and-negative-pressure-wound-therapy-a-systematic-review
#11
E Ali, M Raghuvanshi
OBJECTIVE: Open upper limb injuries requiring soft reconstruction can pose a dilemma for trauma surgeons when considering the treatment options. The British Orthopaedic Association and British Association of Plastic, Reconstructive and Aesthetic Surgeons Standard for Trauma (BOAST) have addressed the management of severe open lower limb fractures with the creation of the BOAST 4 guidelines. However, no such gold standard exists for the treatment of open injuries of the upper limb. Furthermore, treatment of these injuries is often more difficult and requires complicated strategies...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244968/the-house-of-lords-debates-wound-care-strategy
#12
Paul Browning
On Tuesday 22 November, the House of Lords (London, UK) held a short debate 'Improving the standard of wound care in the NHS.' It consisted of nine questions from the floor and a response from Lord O'Shaughnessy, The Parliamentary Under-Secretary of State for Health (Conservative). Here, Paul Browning, (Doctoral Research Student, University of Worcester, employed by 3M UK plc) summarises the key points from the evening and explains why it is so important we keep wound care on the Government's agenda.
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244898/climate-driven-diversity-change-in-annual-grasslands-drought-plus-deluge-does-not-equal-normal
#13
Susan P Harrison, Marina L LaForgia, Andrew M Latimer
Climate forecasts agree that increased variability and extremes will tend to reduce the availability of water in many terrestrial ecosystems. Increasingly severe droughts may be exacerbated both by warmer temperatures and by the relative unavailability of water that arrives in more sporadic and intense rainfall events. Using long-term data and an experimental water manipulation, we examined the resilience of a heterogeneous annual grassland community to a prolonged series of dry winters that led to a decline in plant species richness (2000-2014), followed by a near-record wet winter (2016-2017), a climatic sequence that broadly resembles the predicted future in its high variability...
December 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29244896/total-synthesis-of-sarpagine-related-bioactive-indole-alkaloids
#14
Md Toufiqur Rahman, Jeffrey R Deschamps, Gregory H Imler, James M Cook
Extension of the asymmetric Pictet-Spengler reaction to bulkier Nb-alkylated tryptophan derivatives resulted in an improved stereospecific access to the key bicyclo[3.3.1]nonane core of bioactive C-19 methyl substituted sarpagine/macroline/ajmaline indole alkaloids with excellent diastereoselectivity via internal asymmetric induction. Complete stereocontrol of the C-19 methyl function in either the α- or β-configuration was achieved which enables the total synthesis of any member from this group of thirty alkaloids...
December 15, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29244870/human-hepatic-lipase-overexpression-in-mice-induces-hepatic-steatosis-and-obesity-through-promoting-hepatic-lipogenesis-and-white-adipose-tissue-lipolysis-and-fatty-acid-uptake
#15
Lídia Cedó, David Santos, Núria Roglans, Josep Julve, Victor Pallarès, Andrea Rivas-Urbina, Vicenta Llorente-Cortes, Joan Carles Laguna, Francisco Blanco-Vaca, Joan Carles Escolà-Gil
Human hepatic lipase (hHL) is mainly localized on the hepatocyte cell surface where it hydrolyzes lipids from remnant lipoproteins and high density lipoproteins and promotes their hepatic selective uptake. Furthermore, hepatic lipase (HL) is closely associated with obesity in multiple studies. Therefore, HL may play a key role on lipid homeostasis in liver and white adipose tissue (WAT). In the present study, we aimed to evaluate the effects of hHL expression on hepatic and white adipose triglyceride metabolism in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/29244867/dietary-sources-and-intakes-of-folates-and-vitamin-b12-in-the-spanish-population-findings-from-the-anibes-study
#16
Teresa Partearroyo, María de Lourdes Samaniego-Vaesken, Emma Ruiz, Josune Olza, Javier Aranceta-Bartrina, Ángel Gil, Marcela González-Gross, Rosa M Ortega, Lluis Serra-Majem, Gregorio Varela-Moreiras
BACKGROUND: Folates and vitamin B12 are key nutrients in one-carbon metabolism and related diseases. Updated and plausible information on population intakes and their major dietary sources is scarce and urgently needed in Spain in order to increase the knowledge that can lead as previous step to prevention by fortification and supplementation policies. AIMS: The present study aims to evaluate main dietary folate and vitamin B12 sources and intakes in the Spanish population...
2017: PloS One
https://www.readbyqxmd.com/read/29244866/molecular-dynamics-simulations-of-the-glucocorticoid-receptor-dna-binding-domain-suggest-a-role-of-the-lever-arm-mobility-in-transcriptional-output
#17
Lautaro Damián Álvarez, Diego Martín Presman, Adalí Pecci
One of the first and essential steps in gene expression regulation involves the recruitment of transcription factors (TFs) to specific response elements located at enhancers and/or promoters of targeted genes. These DNA elements have a certain variability in both sequence and length, which may affect the final transcriptional output. The molecular mechanisms in which TFs integrate the subtle differences within specific recognition sequences to offer different transcriptional responses is still largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/29244854/morphological-switch-to-a-resistant-subpopulation-in-response-to-viral-infection-in-the-bloom-forming-coccolithophore-emiliania-huxleyi
#18
Miguel José Frada, Shilo Rosenwasser, Shifra Ben-Dor, Adva Shemi, Helena Sabanay, Assaf Vardi
Recognizing the life cycle of an organism is key to understanding its biology and ecological impact. Emiliania huxleyi is a cosmopolitan marine microalga, which displays a poorly understood biphasic sexual life cycle comprised of a calcified diploid phase and a morphologically distinct biflagellate haploid phase. Diploid cells (2N) form large-scale blooms in the oceans, which are routinely terminated by specific lytic viruses (EhV). In contrast, haploid cells (1N) are resistant to EhV. Further evidence indicates that 1N cells may be produced during viral infection...
December 15, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29244852/proteometabolomic-response-of-deinococcus-radiodurans-exposed-to-uvc-and-vacuum-conditions-initial-studies-prior-to-the-tanpopo-space-mission
#19
Emanuel Ott, Yuko Kawaguchi, Denise Kölbl, Palak Chaturvedi, Kazumichi Nakagawa, Akihiko Yamagishi, Wolfram Weckwerth, Tetyana Milojevic
The multiple extremes resistant bacterium Deinococcus radiodurans is able to withstand harsh conditions of simulated outer space environment. The Tanpopo orbital mission performs a long-term space exposure of D. radiodurans aiming to investigate the possibility of interplanetary transfer of life. The revealing of molecular machinery responsible for survivability of D. radiodurans in the outer space environment can improve our understanding of underlying stress response mechanisms. In this paper, we have evaluated the molecular response of D...
2017: PloS One
https://www.readbyqxmd.com/read/29244849/nutrients-resorption-and-stoichiometry-characteristics-of-different-aged-plantations-of-larix-kaempferi-in-the-qinling-mountains-central-china
#20
Yajun Chang, Naiwei Li, Wei Wang, Xiaojing Liu, Fengfeng Du, Dongrui Yao
Elucidating the stoichiometry and resorption patterns of multiple nutrients is of essential importance to holistically understanding plant nutrition and biogeochemical cycling. Although many studies on ecological stoichiometry have been carried out, surprisingly few of them were simultaneously done on the investigation of both nutrient resorption efficiency and stoichiometry for different-aged plantations of a perennial tree. Here, both green and senesced leaf samples were collected from four Larix kaempfer plantations aged of 8, 15, 22, and 32 years in the Qinling Mountains to examine nutrients resorption efficiency and stoichiometry characteristics...
2017: PloS One
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