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Angharad E Green, Alejandro Amézquita, Yvan Le-Marc, Matthew J Bull, Thomas R Connor, Eshwar Mahenthiralingam
Pseudomonas aeruginosa (P. aeruginosa) is a common contaminant associated with product recalls in the home and personal care (HPC) industry. Preservation systems are used to prevent spoilage and protect consumers, but greater knowledge is needed of preservative resistance mechanisms used by P. aeruginosa contaminants. We aimed to identify genetic pathways associated with preservative exposure by using an industrial P. aeruginosa strain and implementing RNA-Seq to understand gene expression changes in response to industry relevant conditions...
March 14, 2018: FEMS Microbiology Letters
Dinesh Subedi, Ajay Kumar Vijay, Gurjeet Singh Kohli, Scott A Rice, Mark Willcox
No abstract text is available yet for this article.
March 13, 2018: Journal of Antimicrobial Chemotherapy
Ji-Eun Kang, Hyun-Do Kim, Soo-Young Park, Jae-Gu Pan, Jeong Hyun Kim, Do-Young Yum
Background and Aims: Commercial superoxide dismutase (SOD) is derived from melon extract and has a potential as a dietary supplement due to its beneficial anti-oxidative effects. We aimed to improve the productivity of SOD compared with plant SOD by using a generally-regarded-as-safe (GRAS) microorganism, Bacillus amyloliquefaciens, and assess its anti-oxidative effect using γ-radiation- and dextransulfate sodium (DSS)-induced oxidative models in mice. Methods: We identified the sodA gene encoding manganese-containing SODs (Mn-SOD) in B...
March 14, 2018: Journal of Crohn's & Colitis
Asmaa E Kassab, Ehab M Gedawy
As we are interested in synthetizing biologically active leads with dual anticancer and antibacterial activity, we adopted biology oriented drug synthesis (BIODS) strategy to synthesize a series of novel ciprofloxacin (CP) hybrids. The National Cancer Institute (USA) selected seventeen newly synthesized compounds for anticancer evaluation against 59 different human tumor cell lines. Five compounds 3e, 3f, 3h, 3o and 3p were further studied through determination of IC50 values against the most sensitive cancer cell lines...
March 9, 2018: European Journal of Medicinal Chemistry
Jialiang Liang, Fuyang Liu, Mian Li, Wen Liu, Meiping Tong
Magnetic Fe3 O4 @BiOI@AgI (FBA) spheres were synthesized through a multi-step process. The fabricated photocatalysts were characterized by different techniques. To testify the visible light driven photocatalytic activity of FBA, Rhodamine B and Bisphenol A were chosen as model common and emerging organic contaminants, respectively. While, gram-negative strain Escherichia coli was selected as model waterborne bacteria. The results showed that under visible light irradiation, FBA contained strong photocatalytic degradation capacity towards both RhB and BPA...
March 10, 2018: Water Research
Harsha T Garimella, Reuben H Kraft, Andrzej J Przekwas
Subject-specific computer models (male and female) of the human head were used to investigate the possible axonal deformation resulting from the primary phase blast-induced skull flexures. The corresponding axonal tractography was explicitly incorporated into these finite element models using a recently developed technique based on the embedded finite element method. These models were subjected to extensive verification against experimental studies which examined their pressure and displacement response under a wide range of loading conditions...
2018: PloS One
Mitchell R White, Ruth Kandel, I-Ni Hsieh, Xavier De Luna, Kevan L Hartshorn
Recent studies have shown that the Alzheimer's associated β-amyloid protein (βA) can inhibit growth of bacteria, fungi and viruses. We reported that the 42 amino acid βA protein inhibits replication of seasonal and pandemic strains of H3N2 and H1N1 influenza A virus (IAV) in vitro and modulates activation of neutrophils and monocytes exposed IAV. We here show that fragments composed of the N and C terminal domain of βA42, including βA22-42 and the 8 amino acid βA35-42, retain viral neutralizing and viral aggregating activity, whereas fragments lacking the C-terminal amino acids 41 and 42 (e...
2018: PloS One
Mercedes Pérez-Bonilla, Daniel Oves-Costales, Mercedes de la Cruz, Maria Kokkini, Jesús Martín, Francisca Vicente, Olga Genilloud, Fernando Reyes
Phocoenamicins B and C ( 1 and 2 ), together with the known spirotetronate phocoenamicin ( 3 ), were isolated from cultures of Micromonospora sp. The acetone extract from a culture of this strain, isolated from marine sediments collected in the Canary Islands, displayed activity against methicillin-resistant Staphylococcus aureus (MRSA), Mycobacterium tuberculosis H37Ra and Mycobacterium bovis . Bioassay-guided fractionation of this extract using SP207ss column chromatography and preparative reversed-phased HPLC led to the isolation of the new compounds 1 and 2 belonging to the spirotetronate class of polyketides...
March 16, 2018: Marine Drugs
Min Liu, Qing-Xian Ma, Jian-Bin Luo
20Mn5 steel is widely used in the manufacture of heavy hydro-generator shaft forging due to its strength, toughness, and wear resistance. However, the hot deformation and recrystallization behaviors of 20Mn5 steel compressed under a high temperature were not studied. For this article, hot compression experiments under temperatures of 850-1200 °C and strain rates of 0.01 s-1 -1 s-1 were conducted using a Gleeble-1500D thermo-mechanical simulator. Flow stress-strain curves and microstructure after hot compression were obtained...
March 16, 2018: Materials
Kavita Nair, Ahmad Iskandarani, Roda Al-Thani, Ramzi Mohammad, Samir Jaoua
Cyt1A protein is a cytolytic protein encoded by the cyt gene of Bacillus thuringiensis subsp. israelensis (Bti) as part of the parasporal crystal proteins produced during the sporulation. Cyt1A protein is unique compared to the other endotoxins present in these parasporal crystals. Unlike δ-endotoxins, Cyt1A protein does not require receptors to bind to the target cell and activate the toxicity. It has the ability to affect a broad range of cell types and organisms, due to this characteristic. Cyt1A has been recognized to not only target the insect cells directly, but also recruit other endotoxins by acting as receptors...
March 16, 2018: Toxins
Vladimir Anatolievich Chistyakov, Evgeniya Valer'evna Prazdnova, Maria Sergeevna Mazanko, Anzhelica Borisovna Bren
A model system based on the Escherichia coli MG1655 (pRecA-lux) Lux-biosensor was used to evaluate the ability of the fermentates of eight probiotic strains to reduce the SOS response stimulated by ciprofloxacin in bacteria and mutagenesis mediated by it. Preliminary attempts to estimate the chemical nature of active components of the fermentates were conducted.
March 16, 2018: Biosensors
Joshua M Peterson, Carolyn Chlebek, Ashley M Clough, Alexandra K Wells, Eric H Ledet
STUDY DESIGN: In vitro biomechanical testing of human cadaveric cervical and goat cervical motion segments. OBJECTIVE: To measure the effects of plate stiffness on load-sharing, instantaneous axis of rotation (IAR), and posterior element loading after anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA: ACDF is intended to create an environment which facilitates sufficient stability and biomechanical conditions to promote bone formation...
March 15, 2018: Spine
Enrico Gugliandolo, Roberta Fusco, Giovanna Ginestra, Ramona D'amico, Carlo Bisignano, Giuseppina Mandalari, Salvatore Cuzzocrea, Rosanna Di Paola
BACKGROUND: Colonization with Pseudomonas aeruginosa (PA), the most common pathogen isolated mainly in patients with cystic fibrosis, is particularly difficult to eradicate and is associated with acceleration of decline in lung function and with poorer prognosis. PA LPS is recognized by toll like receptors 4 (TLR4) and has been shown to induce lung inflammation in vivo. In addition, regulation of this process is essential for proper pathogen clearance and to prevent excessive inflammatory response resulting in tissue damage...
March 15, 2018: Shock
Elodie Alessandri-Gradt, Fabienne De Oliveira, Marie Leoz, Véronique Lemee, David L Robertson, Felix Feyertag, Paul-Alain Ngoupo, Philippe Mauclere, François Simon, Jean-Christophe Plantier
OBJECTIVES: HIV/1 group P (HIV-1/P) is the last HIV/1 group discovered and to date, comprises only two strains. To obtain new insights into this divergent group, we screened for new infections by developing specific tools, and analysed phenotypic and genotypic properties of the prototypic strain RBF168. In addition, the follow-up of the unique patient monitored so far, has raised the knowledge of the natural history of this infection and its therapeutic management. DESIGN/METHODS: We developed an HIV-1/P specific sero-molecular strategy and screened over 29,498 specimen samples...
March 15, 2018: AIDS
Nadia Lombardi, Stefania Vitale, David Turrà, Massimo Reverberi, Corrado Fanelli, Francesco Vinale, Roberta Marra, Michelina Ruocco, Alberto Pascale, Giada d'Errico, Sheridan Lois Woo, Matteo Lorito
Plant roots release complex mixtures of bioactive molecules including compounds that affect the activity and modify the composition of the rhizosphere microbiome. In this work, we investigated the initial phase of the interaction between tomato and an effective biocontrol strain of Trichoderma harzianum (T22). We found that root exudates (RE), obtained from plants grown in a split root system and exposed to a choice of biotic and abiotic stress factors (wounding, salt, pathogen attack), stimulate the growth and act as chemoattractants of the biocontrol fungus...
March 16, 2018: Molecular Plant-microbe Interactions: MPMI
Guirong Tang, Qiong Li, Shenghui Xing, Ningning Li, Zheng Tang, Liangliang Yu, Junhui Yan, Xuan Li, Li Luo
Agrobacterium tumefaciens infects and causes crown galls in dicot plants by transferring T-DNA from the Ti plasmid to the host plant via a type IV secretion system (T4SS). This process requires appropriate environmental conditions, certain plant secretions and bacterial regulators. In our previous work, a member of the LysR family of transcriptional regulators (LsrB) in Sinorhizobium meliloti was found to modulate its symbiotic interactions with the host plant alfalfa. However, the function of its homologue in A...
March 16, 2018: Molecular Plant-microbe Interactions: MPMI
B P Abbott, R Abbott, T D Abbott, F Acernese, K Ackley, C Adams, T Adams, P Addesso, R X Adhikari, V B Adya, C Affeldt, M Afrough, B Agarwal, M Agathos, K Agatsuma, N Aggarwal, O D Aguiar, L Aiello, A Ain, P Ajith, B Allen, G Allen, A Allocca, P A Altin, A Amato, A Ananyeva, S B Anderson, W G Anderson, S V Angelova, S Antier, S Appert, K Arai, M C Araya, J S Areeda, N Arnaud, K G Arun, S Ascenzi, G Ashton, M Ast, S M Aston, P Astone, D V Atallah, P Aufmuth, C Aulbert, K AultONeal, C Austin, A Avila-Alvarez, S Babak, P Bacon, M K M Bader, S Bae, P T Baker, F Baldaccini, G Ballardin, S W Ballmer, S Banagiri, J C Barayoga, S E Barclay, B C Barish, D Barker, K Barkett, F Barone, B Barr, L Barsotti, M Barsuglia, D Barta, J Bartlett, I Bartos, R Bassiri, A Basti, J C Batch, M Bawaj, J C Bayley, M Bazzan, B Bécsy, C Beer, M Bejger, I Belahcene, A S Bell, B K Berger, G Bergmann, J J Bero, C P L Berry, D Bersanetti, A Bertolini, J Betzwieser, S Bhagwat, R Bhandare, I A Bilenko, G Billingsley, C R Billman, J Birch, R Birney, O Birnholtz, S Biscans, S Biscoveanu, A Bisht, M Bitossi, C Biwer, M A Bizouard, J K Blackburn, J Blackman, C D Blair, D G Blair, R M Blair, S Bloemen, O Bock, N Bode, M Boer, G Bogaert, A Bohe, F Bondu, E Bonilla, R Bonnand, B A Boom, R Bork, V Boschi, S Bose, K Bossie, Y Bouffanais, A Bozzi, C Bradaschia, P R Brady, M Branchesi, J E Brau, T Briant, A Brillet, M Brinkmann, V Brisson, P Brockill, J E Broida, A F Brooks, D A Brown, D D Brown, S Brunett, C C Buchanan, A Buikema, T Bulik, H J Bulten, A Buonanno, D Buskulic, C Buy, R L Byer, M Cabero, L Cadonati, G Cagnoli, C Cahillane, J Calderón Bustillo, T A Callister, E Calloni, J B Camp, M Canepa, P Canizares, K C Cannon, H Cao, J Cao, C D Capano, E Capocasa, F Carbognani, S Caride, M F Carney, J Casanueva Diaz, C Casentini, S Caudill, M Cavaglià, F Cavalier, R Cavalieri, G Cella, C B Cepeda, P Cerdá-Durán, G Cerretani, E Cesarini, S J Chamberlin, M Chan, S Chao, P Charlton, E Chase, E Chassande-Mottin, D Chatterjee, B D Cheeseboro, H Y Chen, X Chen, Y Chen, H-P Cheng, H Chia, A Chincarini, A Chiummo, T Chmiel, H S Cho, M Cho, J H Chow, N Christensen, Q Chu, A J K Chua, S Chua, A K W Chung, S Chung, G Ciani, R Ciolfi, C E Cirelli, A Cirone, F Clara, J A Clark, P Clearwater, F Cleva, C Cocchieri, E Coccia, P-F Cohadon, D Cohen, A Colla, C G Collette, L R Cominsky, M Constancio, L Conti, S J Cooper, P Corban, T R Corbitt, I Cordero-Carrión, K R Corley, N Cornish, A Corsi, S Cortese, C A Costa, M W Coughlin, S B Coughlin, J-P Coulon, S T Countryman, P Couvares, P B Covas, E E Cowan, D M Coward, M J Cowart, D C Coyne, R Coyne, J D E Creighton, T D Creighton, J Cripe, S G Crowder, T J Cullen, A Cumming, L Cunningham, E Cuoco, T Dal Canton, G Dálya, S L Danilishin, S D'Antonio, K Danzmann, A Dasgupta, C F Da Silva Costa, V Dattilo, I Dave, M Davier, D Davis, E J Daw, B Day, S De, D DeBra, J Degallaix, M De Laurentis, S Deléglise, W Del Pozzo, N Demos, T Denker, T Dent, R De Pietri, V Dergachev, R De Rosa, R T DeRosa, C De Rossi, R DeSalvo, O de Varona, J Devenson, S Dhurandhar, M C Díaz, L Di Fiore, M Di Giovanni, T Di Girolamo, A Di Lieto, S Di Pace, I Di Palma, F Di Renzo, Z Doctor, V Dolique, F Donovan, K L Dooley, S Doravari, I Dorrington, R Douglas, M Dovale Álvarez, T P Downes, M Drago, C Dreissigacker, J C Driggers, Z Du, M Ducrot, P Dupej, S E Dwyer, T B Edo, M C Edwards, A Effler, H-B Eggenstein, P Ehrens, J Eichholz, S S Eikenberry, R A Eisenstein, R C Essick, D Estevez, Z B Etienne, T Etzel, M Evans, T M Evans, M Factourovich, V Fafone, H Fair, S Fairhurst, X Fan, S Farinon, B Farr, W M Farr, E J Fauchon-Jones, M Favata, M Fays, C Fee, H Fehrmann, J Feicht, M M Fejer, A Fernandez-Galiana, I Ferrante, E C Ferreira, F Ferrini, F Fidecaro, D Finstad, I Fiori, D Fiorucci, M Fishbach, R P Fisher, M Fitz-Axen, R Flaminio, M Fletcher, H Fong, J A Font, P W F Forsyth, S S Forsyth, J-D Fournier, S Frasca, F Frasconi, Z Frei, A Freise, R Frey, V Frey, E M Fries, P Fritschel, V V Frolov, P Fulda, M Fyffe, H Gabbard, B U Gadre, S M Gaebel, J R Gair, L Gammaitoni, M R Ganija, S G Gaonkar, C Garcia-Quiros, F Garufi, B Gateley, S Gaudio, G Gaur, V Gayathri, N Gehrels, G Gemme, E Genin, A Gennai, D George, J George, L Gergely, V Germain, S Ghonge, Abhirup Ghosh, Archisman Ghosh, S Ghosh, J A Giaime, K D Giardina, A Giazotto, K Gill, L Glover, E Goetz, R Goetz, S Gomes, B Goncharov, G González, J M Gonzalez Castro, A Gopakumar, M L Gorodetsky, S E Gossan, M Gosselin, R Gouaty, A Grado, C Graef, M Granata, A Grant, S Gras, C Gray, G Greco, A C Green, E M Gretarsson, P Groot, H Grote, S Grunewald, P Gruning, G M Guidi, X Guo, A Gupta, M K Gupta, K E Gushwa, E K Gustafson, R Gustafson, O Halim, B R Hall, E D Hall, E Z Hamilton, G Hammond, M Haney, M M Hanke, J Hanks, C Hanna, M D Hannam, O A Hannuksela, J Hanson, T Hardwick, J Harms, G M Harry, I W Harry, M J Hart, C-J Haster, K Haughian, J Healy, A Heidmann, M C Heintze, H Heitmann, P Hello, G Hemming, M Hendry, I S Heng, J Hennig, A W Heptonstall, M Heurs, S Hild, T Hinderer, D Hoak, D Hofman, K Holt, D E Holz, P Hopkins, C Horst, J Hough, E A Houston, E J Howell, A Hreibi, Y M Hu, E A Huerta, D Huet, B Hughey, S Husa, S H Huttner, T Huynh-Dinh, N Indik, R Inta, G Intini, H N Isa, J-M Isac, M Isi, B R Iyer, K Izumi, T Jacqmin, K Jani, P Jaranowski, S Jawahar, F Jiménez-Forteza, W W Johnson, D I Jones, R Jones, R J G Jonker, L Ju, J Junker, C V Kalaghatgi, V Kalogera, B Kamai, S Kandhasamy, G Kang, J B Kanner, S J Kapadia, S Karki, K S Karvinen, M Kasprzack, M Katolik, E Katsavounidis, W Katzman, S Kaufer, K Kawabe, F Kéfélian, D Keitel, A J Kemball, R Kennedy, C Kent, J S Key, F Y Khalili, I Khan, S Khan, Z Khan, E A Khazanov, N Kijbunchoo, Chunglee Kim, J C Kim, K Kim, W Kim, W S Kim, Y-M Kim, S J Kimbrell, E J King, P J King, M Kinley-Hanlon, R Kirchhoff, J S Kissel, L Kleybolte, S Klimenko, T D Knowles, P Koch, S M Koehlenbeck, S Koley, V Kondrashov, A Kontos, M Korobko, W Z Korth, I Kowalska, D B Kozak, C Krämer, V Kringel, B Krishnan, A Królak, G Kuehn, P Kumar, R Kumar, S Kumar, L Kuo, A Kutynia, S Kwang, B D Lackey, K H Lai, M Landry, R N Lang, J Lange, B Lantz, R K Lanza, A Lartaux-Vollard, P D Lasky, M Laxen, A Lazzarini, C Lazzaro, P Leaci, S Leavey, C H Lee, H K Lee, H M Lee, H W Lee, K Lee, J Lehmann, A Lenon, M Leonardi, N Leroy, N Letendre, Y Levin, T G F Li, S D Linker, T B Littenberg, J Liu, R K L Lo, N A Lockerbie, L T London, J E Lord, M Lorenzini, V Loriette, M Lormand, G Losurdo, J D Lough, C O Lousto, G Lovelace, H Lück, D Lumaca, A P Lundgren, R Lynch, Y Ma, R Macas, S Macfoy, B Machenschalk, M MacInnis, D M Macleod, I Magaña Hernandez, F Magaña-Sandoval, L Magaña Zertuche, R M Magee, E Majorana, I Maksimovic, N Man, V Mandic, V Mangano, G L Mansell, M Manske, M Mantovani, F Marchesoni, F Marion, S Márka, Z Márka, C Markakis, A S Markosyan, A Markowitz, E Maros, A Marquina, F Martelli, L Martellini, I W Martin, R M Martin, D V Martynov, K Mason, E Massera, A Masserot, T J Massinger, M Masso-Reid, S Mastrogiovanni, A Matas, F Matichard, L Matone, N Mavalvala, N Mazumder, R McCarthy, D E McClelland, S McCormick, L McCuller, S C McGuire, G McIntyre, J McIver, D J McManus, L McNeill, T McRae, S T McWilliams, D Meacher, G D Meadors, M Mehmet, J Meidam, E Mejuto-Villa, A Melatos, G Mendell, R A Mercer, E L Merilh, M Merzougui, S Meshkov, C Messenger, C Messick, R Metzdorff, P M Meyers, H Miao, C Michel, H Middleton, E E Mikhailov, L Milano, A L Miller, B B Miller, J Miller, M Millhouse, M C Milovich-Goff, O Minazzoli, Y Minenkov, J Ming, C Mishra, S Mitra, V P Mitrofanov, G Mitselmakher, R Mittleman, D Moffa, A Moggi, K Mogushi, M Mohan, S R P Mohapatra, M Montani, C J Moore, D Moraru, G Moreno, S R Morriss, B Mours, C M Mow-Lowry, G Mueller, A W Muir, Arunava Mukherjee, D Mukherjee, S Mukherjee, N Mukund, A Mullavey, J Munch, E A Muñiz, M Muratore, P G Murray, K Napier, I Nardecchia, L Naticchioni, R K Nayak, J Neilson, G Nelemans, T J N Nelson, M Nery, A Neunzert, L Nevin, J M Newport, G Newton, K K Y Ng, T T Nguyen, D Nichols, A B Nielsen, S Nissanke, A Nitz, A Noack, F Nocera, D Nolting, C North, L K Nuttall, J Oberling, G D O'Dea, G H Ogin, J J Oh, S H Oh, F Ohme, M A Okada, M Oliver, P Oppermann, Richard J Oram, B O'Reilly, R Ormiston, L F Ortega, R O'Shaughnessy, S Ossokine, D J Ottaway, H Overmier, B J Owen, A E Pace, J Page, M A Page, A Pai, S A Pai, J R Palamos, O Palashov, C Palomba, A Pal-Singh, Howard Pan, Huang-Wei Pan, B Pang, P T H Pang, C Pankow, F Pannarale, B C Pant, F Paoletti, A Paoli, M A Papa, A Parida, W Parker, D Pascucci, A Pasqualetti, R Passaquieti, D Passuello, M Patil, B Patricelli, B L Pearlstone, M Pedraza, R Pedurand, L Pekowsky, A Pele, S Penn, C J Perez, A Perreca, L M Perri, H P Pfeiffer, M Phelps, O J Piccinni, M Pichot, F Piergiovanni, V Pierro, G Pillant, L Pinard, I M Pinto, M Pirello, M Pitkin, M Poe, R Poggiani, P Popolizio, E K Porter, A Post, J Powell, J Prasad, J W W Pratt, G Pratten, V Predoi, T Prestegard, M Prijatelj, M Principe, S Privitera, G A Prodi, L G Prokhorov, O Puncken, M Punturo, P Puppo, M Pürrer, H Qi, V Quetschke, E A Quintero, R Quitzow-James, F J Raab, D S Rabeling, H Radkins, P Raffai, S Raja, C Rajan, B Rajbhandari, M Rakhmanov, K E Ramirez, A Ramos-Buades, P Rapagnani, V Raymond, M Razzano, J Read, T Regimbau, L Rei, S Reid, D H Reitze, W Ren, S D Reyes, F Ricci, P M Ricker, S Rieger, K Riles, M Rizzo, N A Robertson, R Robie, F Robinet, A Rocchi, L Rolland, J G Rollins, V J Roma, J D Romano, R Romano, C L Romel, J H Romie, D Rosińska, M P Ross, S Rowan, A Rüdiger, P Ruggi, G Rutins, K Ryan, S Sachdev, T Sadecki, L Sadeghian, M Sakellariadou, L Salconi, M Saleem, F Salemi, A Samajdar, L Sammut, L M Sampson, E J Sanchez, L E Sanchez, N Sanchis-Gual, V Sandberg, J R Sanders, B Sassolas, B S Sathyaprakash, P R Saulson, O Sauter, R L Savage, A Sawadsky, P Schale, M Scheel, J Scheuer, J Schmidt, P Schmidt, R Schnabel, R M S Schofield, A Schönbeck, E Schreiber, D Schuette, B W Schulte, B F Schutz, S G Schwalbe, J Scott, S M Scott, E Seidel, D Sellers, A S Sengupta, D Sentenac, V Sequino, A Sergeev, D A Shaddock, T J Shaffer, A A Shah, M S Shahriar, M B Shaner, L Shao, B Shapiro, P Shawhan, A Sheperd, D H Shoemaker, D M Shoemaker, K Siellez, X Siemens, M Sieniawska, D Sigg, A D Silva, L P Singer, A Singh, A Singhal, A M Sintes, B J J Slagmolen, B Smith, J R Smith, R J E Smith, S Somala, E J Son, J A Sonnenberg, B Sorazu, F Sorrentino, T Souradeep, A P Spencer, A K Srivastava, K Staats, A Staley, M Steinke, J Steinlechner, S Steinlechner, D Steinmeyer, S P Stevenson, R Stone, D J Stops, K A Strain, G Stratta, S E Strigin, A Strunk, R Sturani, A L Stuver, T Z Summerscales, L Sun, S Sunil, J Suresh, P J Sutton, B L Swinkels, M J Szczepańczyk, M Tacca, S C Tait, C Talbot, D Talukder, D B Tanner, M Tápai, A Taracchini, J D Tasson, J A Taylor, R Taylor, S V Tewari, T Theeg, F Thies, E G Thomas, M Thomas, P Thomas, K A Thorne, E Thrane, S Tiwari, V Tiwari, K V Tokmakov, K Toland, M Tonelli, Z Tornasi, A Torres-Forné, C I Torrie, D Töyrä, F Travasso, G Traylor, J Trinastic, M C Tringali, L Trozzo, K W Tsang, M Tse, R Tso, L Tsukada, D Tsuna, D Tuyenbayev, K Ueno, D Ugolini, C S Unnikrishnan, A L Urban, S A Usman, H Vahlbruch, G Vajente, G Valdes, N van Bakel, M van Beuzekom, J F J van den Brand, C Van Den Broeck, D C Vander-Hyde, L van der Schaaf, J V van Heijningen, A A van Veggel, M Vardaro, V Varma, S Vass, M Vasúth, A Vecchio, G Vedovato, J Veitch, P J Veitch, K Venkateswara, G Venugopalan, D Verkindt, F Vetrano, A Viceré, A D Viets, S Vinciguerra, D J Vine, J-Y Vinet, S Vitale, T Vo, H Vocca, C Vorvick, S P Vyatchanin, A R Wade, L E Wade, M Wade, R Walet, M Walker, L Wallace, S Walsh, G Wang, H Wang, J Z Wang, W H Wang, Y F Wang, R L Ward, J Warner, M Was, J Watchi, B Weaver, L-W Wei, M Weinert, A J Weinstein, R Weiss, L Wen, E K Wessel, P Weßels, J Westerweck, T Westphal, K Wette, J T Whelan, B F Whiting, C Whittle, D Wilken, D Williams, R D Williams, A R Williamson, J L Willis, B Willke, M H Wimmer, W Winkler, C C Wipf, H Wittel, G Woan, J Woehler, J Wofford, K W K Wong, J Worden, J L Wright, D S Wu, D M Wysocki, S Xiao, H Yamamoto, C C Yancey, L Yang, M J Yap, M Yazback, Hang Yu, Haocun Yu, M Yvert, A Zadrożny, M Zanolin, T Zelenova, J-P Zendri, M Zevin, L Zhang, M Zhang, T Zhang, Y-H Zhang, C Zhao, M Zhou, Z Zhou, S J Zhu, X J Zhu, M E Zucker, J Zweizig
The LIGO Scientific and Virgo Collaborations have announced the event GW170817, the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron stars estimated from this event suggests that distant, unresolvable binary neutron stars create a significant astrophysical stochastic gravitational-wave background. The binary neutron star component will add to the contribution from binary black holes, increasing the amplitude of the total astrophysical background relative to previous expectations...
March 2, 2018: Physical Review Letters
Ran Chen, Ying Lu, Zhiyong Jiang, Yongfeng Men
The poly(4-methyl-1-pentene) sample was used to investigate the cavitation induced stress-whitening phenomenon during stretching at different temperatures via the ultra-small-angle X-ray scattering technique. Two modes of cavitation were found that mode I cavitation activated around yield point followed by mode II cavitation generated in highly oriented state. The critical strain for initiating the mode II cavitation increases with the increase of stretching temperature whereas the critical stress grew steadily in the lower temperature regime (30~60oC) and reached a plateau at 70oC...
March 16, 2018: Journal of Physical Chemistry. B
Yulong Bai, Ning Jiang, Shifeng Zhao
Nanocluster-assembled FeGa micron-scale discs prepared by low-energy cluster beam deposition were embedded into Bi5Ti3FeO15 matrices to form pseudo 1-3 heterostructure films. The microstructures and multiferroic properties were investigated. Good ferroelectric, piezoelectric, and ferromagnetic properties and giant magnetoelectric effects are achieved for the heterostructure films, which is ascribed to the depression of the clamped effect from the hard substrate for such pseudo 1-3 structures and the multi-interface coupling between the large magnetostrictive coefficient of FeGa micron-scale discs and the high piezoelectric coefficient of the circle surrounding the Bi5Ti3FeO15 matrices...
March 16, 2018: Nanoscale
Viacheslav Sorkin, Yong-Wei Zhang
Using density functional tight-binding method, we studied the mechanical properties, deformation and failure of armchair (AC) and zigzag (ZZ) phosphorene nanotubes (PNTs) with monovacancies and divacancies subjected to uniaxial tensile strain. We found that divacancies in AC PNTs and monovacancies in ZZ PNTs possess the lowest vacancy formation energy, which increases with the tube diameter in AC PNTs and decreases in ZZ PNTs. The Young's modulus is reduced, while the radial and thickness Poisson's ratios are increased by hosted vacancies...
March 16, 2018: Nanotechnology
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