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Organ harvest

Yue-Ying Li, Jian-Gan Wang, Huanhuan Sun, Bingqing Wei
Organic dyes used in the conventional dye-sensitized solar cells (DSSCs) suffer from poor light stability and high cost. In this work, we demonstrate a new inorganic sensitized solar cell based on ordered one-dimensional (1D) semiconductor nanorod arrays of TiO2/NiTiO3 heterostructures prepared via a facile two-step hydrothermal approach. The semiconductor heterostructure arrays are highly desirable and promising for DSSCs due to their direct charge transport capability and slow charge recombination rate. The low-cost NiTiO3 inorganic semiconductor possesses an appropriate band gap that matches well with TiO2, which behaviors like a "dye" to enable efficient light-harvesting and fast electron-hole separation...
March 20, 2018: ACS Applied Materials & Interfaces
Kai Huang, Chuan Fang, Kaikai Yi, Xing Liu, Hongzhao Qi, Yanli Tan, Junhu Zhou, Ying Li, Mingyang Liu, Yuqing Zhang, Jingxuan Yang, Jianning Zhang, Min Li, Chunsheng Kang
Exosomes play critical roles in intercellular communication in both nearby and distant cells in individuals and organs. Polymerase I and transcript release factor (PTRF), also known as Cavin1, has previously been described as a critical factor in caveola formation, and aberrant PTRF expression has been reported in various malignancies. However, the function of PTRF in tumor progression remains controversial, and its role in glioma is poorly understood. In this study, we report that PTRF is associated with malignancy grade and poor prognosis in glioma patients...
2018: Theranostics
Kotaro Kosuge, Ryutaro Tokutsu, Eunchul Kim, Seiji Akimoto, Makio Yokono, Yoshifumi Ueno, Jun Minagawa
Photosynthetic organisms are frequently exposed to light intensities that surpass the photosynthetic electron transport capacity. Under these conditions, the excess absorbed energy can be transferred from excited chlorophyll in the triplet state (3Chl*) to molecular O2 , which leads to the production of harmful reactive oxygen species. To avoid this photooxidative stress, photosynthetic organisms must respond to excess light. In the green alga Chlamydomonas reinhardtii , the fastest response to high light is nonphotochemical quenching, a process that allows safe dissipation of the excess energy as heat...
March 19, 2018: Proceedings of the National Academy of Sciences of the United States of America
Shaojun Wang, Jihang Li, Zhe Zhang, Run Cao, Minkun Chen, Shaohui Li
The aboveground ant nests are admitted as hot spots for CO2 emissions which increase heterogeneity of soil carbon (C) flux in forest ecosystems. However, little is known about effects of underground-nesting ant species on C emissions in tropical forests, where the ants have high diversity and abundance. In this study, we chose three underground-nesting ant species with different feeding-behaviors (Pheidole capellini - predominantly honeydew harvester, Odontoponera transversa - predominantly predator, and Pheidologeton affinis - scavenger) to explore their impacts on soil CO2 emission in Xishuangbanna tropical forest, China...
March 1, 2018: Science of the Total Environment
Kavi Devraj, Sylvaine Guérit, Jakranka Macas, Yvonne Reiss
Blood-brain barrier (BBB) is a specialized barrier that protects the brain microenvironment from toxins and pathogens in the circulation and maintains brain homeostasis. The principal sites of the barrier are endothelial cells of the brain capillaries whose barrier function results from tight intercellular junctions and efflux transporters expressed on the plasma membrane. This function is regulated by pericytes and astrocytes that together form the neurovascular unit (NVU). Several neurological diseases such as stroke, Alzheimer's disease (AD), brain tumors are associated with an impaired BBB function...
February 26, 2018: Journal of Visualized Experiments: JoVE
Sylvain Dépigny, Frédéric Tchotang, Médard Talla, Désirée Fofack, David Essomé, Jean-Pierre Ebongué, Bernard Kengni, Thierry Lescot
The 'Plantain-Optim' dataset (came from the 'Plantain-Optim' experiment conducted from 2009 to 2011 at CARBAP experimental station in Cameroon. The main objective was to describe agronomic potential of nine plantain varieties, including five natural plantains commonly cropped in Cameroon, and four plantain-like hybrids. A completely randomized bloc permitted to compare growth, development and yield of 45 plants per variety split between five replicates. Cropping practices guarantied non-limiting and homogenous conditions...
April 2018: Data in Brief
Autumn Oczkowski, Bryan Taplin, Richard Pruell, Adam Pimenta, Roxanne Johnson, Jason Grear
Coastal ecosystems are inherently complex and potentially adaptive as they respond to changes in nutrient loads and climate. We documented the role that carbon stable isotope (δ13 C) measurements could play in understanding that adaptation with a series of three Ecostat (i.e., continuous culture) experiments. We quantified linkages among δ13 C, nutrients, carbonate chemistry, primary, and secondary production in temperate estuarine waters. Experimental culture vessels (9.1 L) containing 33% whole and 67% filtered (0...
February 14, 2018: Frontiers in Marine Science
Hector Urbina, Martin F Breed, Weizhou Zhao, Kanaka Lakshmi Gurrala, Siv G E Andersson, Jon Ågren, Sandra Baldauf, Anna Rosling
Biotic and abiotic conditions in soil pose major constraints on growth and reproductive success of plants. Fungi are important agents in plant soil interactions but the belowground mycobiota associated with plants remains poorly understood. We grew one genotype each from Sweden and Italy of the widely-studied plant model Arabidopsis thaliana. Plants were grown under controlled conditions in organic topsoil local to the Swedish genotype, and harvested after ten weeks. Total DNA was extracted from three belowground compartments: endosphere (sonicated roots), rhizosphere and bulk soil, and fungal communities were characterized from each by amplification and sequencing of the fungal barcode region ITS2...
April 2018: Fungal Biology
Qiang Cai, Baoye He, Karl-Heinz Kogel, Hailing Jin
In plants, small RNA (sRNA)-mediated RNA interference (RNAi) is critical for regulating host immunity against bacteria, fungi, oomycetes, viruses, and pests. Similarly, sRNAs from pathogens and pests also play an important role in modulating their virulence. Strikingly, recent evidence supports that some sRNAs can travel between interacting organisms and induce gene silencing in the counter party, a mechanism termed cross-kingdom RNAi. Exploiting this new knowledge, host-induced gene silencing (HIGS) by transgenic expression of pathogen gene-targeting double-stranded (ds)RNA has the potential to become an important disease-control method...
March 14, 2018: Current Opinion in Microbiology
Ekaterina A Dolgopolova, Allison M Rice, Corey R Martin, Natalia B Shustova
In this review, we highlight how recent advances achieved in the fields of photochemistry and photophysics of metal-organic frameworks (MOFs) could be applied towards the engineering of next generation MOF-based sensing devices. In addition to high surface area and structural tunability, which are crucial for efficient sensor development, progress in the field of MOF-based sensors could rely on the combination of MOF light-harvesting ability, understanding energy transfer processes within a framework, and application of MOF-based photocatalysis towards sensing enhancement...
March 16, 2018: Chemical Society Reviews
Dafei Yin, Xiaonan Yin, Xingyu Wang, Zhao Lei, Maofei Wang, Yuming Guo, Samuel E Aggrey, Wei Nie, Jianmin Yuan
Background: The effect of amylases combined with exogenous carbohydrase and protease in a newly harvested corn diet on starch digestibility, intestine health and cecal microbiota was investigated in broiler chickens. Methods: Two hunderd and eighty-eight 5-day-old female chickens were randomly divided into six treatments: a newly harvested corn-soybean meal diet (control); control supplemented with 1,500 U/g α-amylase (Enzyme A); Enzyme A + 300 U/g amylopectase + 20,000 U/g glucoamylase (Enzyme B); Enzyme B + protease 10,000 U/g (Enzyme C); Enzyme C + xylanase 15,000 U/g (Enzyme D); and Enzyme D + cellulase 200 U/g + pectinase 1,000 U/g (Enzyme E)...
2018: Journal of Animal Science and Biotechnology
Beata Bajorowicz, Marek P Kobylański, Anna Gołąbiewska, Joanna Nadolna, Adriana Zaleska-Medynska, Anna Malankowska
Quantum dot (QD)-decorated semiconductor micro- and nanoparticles are a new class of functional nanomaterials that have attracted considerable interest for their unique structural, optical and electronic properties that result from the large surface-to-volume ratio and the quantum confinement effect. In addition, because of QDs' excellent light-harvesting capacity, unique photoinduced electron transfer, and up-conversion behaviour, semiconductor nanoparticles decorated with quantum dots have been used widely in photocatalytic applications for the degradation of organic pollutants in both the gas and aqueous phases...
February 20, 2018: Advances in Colloid and Interface Science
Irena Branyikova, Monika Filipenska, Katerina Urbanova, Marek C Ruzicka, Martin Pivokonsky, Tomas Branyik
Alkaline flocculation has been studied due to its potential as a low-cost harvesting method for microalgae. However, surface properties (zeta potential, contact angles) as inputs into physicochemical interaction models have not yet been applied systematically. In this work, forced alkaline flocculation of the freshwater microalgae Chlorella vulgaris induced by calcium phosphate precipitates was studied as a model system. Response surface methodology was used to quantify the effect of independent variables (concentration of Ca2+ (0...
March 6, 2018: Colloids and Surfaces. B, Biointerfaces
Jaime L Bernstein, Benjamin P Cohen, Alexandra Lin, Alice Harper, Lawrence J Bonassar, Jason A Spector
PURPOSE: The significant shortcomings associated with current autologous reconstructive options for auricular deformities have inspired great interest in a tissue engineering solution. A major obstacle in the engineering of human auricular cartilage is the availability of sufficient autologous human chondrocytes. A clinically obtainable amount of auricular cartilage tissue (ie, 1 g) only yields approximately 10 million cells, where 25 times this amount is needed for the fabrication of a full-scale pediatric ear...
March 13, 2018: Annals of Plastic Surgery
Zhen Li, Fei Huang, Xin Feng, Aihua Yan, Haiming Dong, Miao Hu, Qi Li
Two-phase-coexistence technique offers intriguing variables to manoeuvre novel and enhanced functionality in a sigle-component material. Most importantly, new band alignment and perfect interfaces between two phases can strongly affect the local photoelectronic properties. However, previous efforts for achieving the two-phase coexistence are mainly restricted to specific systems and methods. Here we demonstrate a phase-transition route to acquire two-phase-coexistence niobium oxyfluoride (Nb3O7F) nanocrystals for the first time...
March 14, 2018: Nanotechnology
Katharine M Hinchcliff, Jessica Crockett, Steven W Thorpe, Christopher O Bayne
Long ischemia times adversely affect free flap survival, and large muscle flaps are particularly vulnerable. Hypothermic machine perfusion (HMP) is a well-established method of organ preservation, and recent literature has detailed the use of HMP to extend free flap ischemia times, predominantly in the laboratory setting. One limitation in the study and adoption of free flap HMP has been the availability of standardized perfusion machinery, as thus far institutions have built their own devices. We present a case of a 75-year-old woman with dedifferentiated chondrosarcoma of her right proximal femur...
March 14, 2018: Microsurgery
Gary Hin-Fai Yam, Ericia Pei-Wen Teo, Melina Setiawan, Matthew J Lovatt, Nur Zahirah Binte M Yusoff, Matthias Fuest, Bee-Tin Goh, Jodhbir S Mehta
Corneal opacities are a leading cause of global blindness. They are conventionally treated by the transplantation of donor corneal tissue, which is, restricted by a worldwide donor material shortage and allograft rejection. Autologous adult stem cells with a potential to differentiate into corneal stromal keratocytes (CSKs) could offer a suitable choice of cells for regenerative cell therapy. Postnatal periodontal ligament (PDL) contains a population of adult stem cells, which has a similar embryological origin as CSK, that is cranial neural crest...
March 13, 2018: Journal of Cellular and Molecular Medicine
Pilar Mañas, Jorge de Las Heras
BACKGROUND: The objective of the study was to: firstly evaluate the response of nutrient uptake after applying 15 t ha-1 of sewage sludge, compost and a commercial fertiliser to soil in grain and straw of winter wheat (Triticum turgidum L. cv. Vitron); secondly investigate the composition of the same parameters in the original soil and compare them with soil after applying fertiliser treatments. A field-scale experiment established the agronomic performance of air-dried sewage sludge and composted sludge for winter wheat...
March 14, 2018: Journal of the Science of Food and Agriculture
Xiaoyu Wang, Yuan Zhao, Xiaoxue Jiang, Lijun Liu, Xue Li, Huixian Li, Wenyan Liang
Plant polyphenol (PP), a natural polymer from the Larix gmelinii, was selected as the surfactant to synthesize Fe3 O4 . The Fe3 O4 -PP composite was prepared by in-situ self-assembly in solvothermal synthesis, and characterized using FE-SEM, TEM, XRD, FTIR, XPS, TGA, and VSM. The harvesting efficiency of Chlorella vulgaris was investigated under different parameters, including algal organic matter, dosage, and pH. The results showed that the core-shell sphere of Fe3 O4 -PP (∼150 nm) was coated by ∼50 nm PP with a saturated magnetization of 40...
March 10, 2018: Journal of Environmental Management
Wenqiang Zhang, Xin Jin, Xin Meng, Wenzhong Tang, Baoqing Shan
We studied the processes and mechanisms that drove phosphorus (P) release and transformations at the sediment-water interface (SWI) because of the decomposition of plant debris. The results showed that, as the simulation time increased, the pH, dissolved oxygen (DO), and oxidation reduction potential (ORP) in Duckweed+Sediment+Water (DWS) and Duckweed+Water (DW) initially decreased and then increased before stabilizing. Changes in the physicochemical characteristics affect the microhabitat and the release and transformations of P at the SWI...
March 3, 2018: Chemosphere
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