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Ana Carolina Biacchi Brust, Julia Brenda Desojo, Cesar Leandro Schultz, Voltaire Dutra Paes-Neto, Átila Augusto Stock Da-Rosa
Aetosauria, which includes 30 species, is a diverse group of armored pseudosuchian archosaurs restricted to Upper Triassic beds. Three species occur in Brazil, and one of these, Aetosauroides scagliai Casamiquela, 1960, also occurs in Argentina. The specimen UFSM 11505, found at Faixa Nova-Cerrito I Outcrop, Santa Maria Formation (Hyperodapedon Assemblage Zone), Santa Maria, Rio Grande do Sul State, Brazil, is here referred to as Aetosauroides scagliai. This specimen preserves most of the skull with both hemimandibles in association with most of the postcranium, thus representing one of the most complete aetosaur skeletons found in Brazil...
2018: PloS One
Michael Salmon, Christina Coppenrath, Benjamin Higgins
In this study, we compare and contrast armoring strategies during early ontogeny among three related species of marine turtles: the hawksbill, a species that diverged about 29 mya from the loggerhead and Kemp's ridley, which diverged from one another about 16 mya. Our purpose was to determine whether there was a correlation between divergence time and the evolution of unique morphological armoring specializations among these species. To find out, we completed a more detailed analysis of shell morphology for all of the species that revealed the following patterns...
August 14, 2018: Journal of Morphology
Penny A Asbell, Rahul T Pandit, Christine M Sanfilippo
INTRODUCTION: The Antibiotic Resistance Monitoring in Ocular micRoorganisms (ARMOR) study is an ongoing nationwide surveillance program that surveys in vitro antibiotic resistance rates and trends among ocular bacterial pathogens. We report resistance rates by geographic region for isolates collected from 2009 through 2016. METHODS: Staphylococcus aureus, coagulase-negative staphylococci (CoNS), Streptococcus pneumoniae, Haemophilus influenzae, and Pseudomonas aeruginosa isolates from ocular infections were collected at clinical centers across the US and categorized by geographic region based on state...
August 9, 2018: Ophthalmology and Therapy
Asfar S Azmi
No abstract text is available yet for this article.
August 6, 2018: Seminars in Cancer Biology
Ningning Song, Yunya Zhang, Zan Gao, Xiaodong Li
Nature's multiscale reinforcing mechanisms in fabricating composite armors such as seashells provide lessons for engineering materials design and manufacturing. However, it is still a challenge to simultaneously add both micro- and nano-reinforcements in a matrix material since nano-fillers tend to agglomerate, decreasing their reinforcing effects. In this study, we report a new type of micro/nano hybrid filler, synthesized by an unconventional cotton aided method, which has B4C microplatelet as the core and radially aligned B4C nanowires as the shell...
August 8, 2018: Nano Letters
Xin Li, Shuaibo Gao, Pengfei Xing, Kaizhao Dong, Bo Gao, Zhongbao Feng
Considerable amounts of high-quality boron carbide (B4 C) are discarded as J240 sapphire-wafer grinding waste (J240-W), which can be mostly recovered and reutilized after purification for environmental protection. This paper has developed a feasibility method that simultaneously removes the alumina (Al2 O3 ) and iron (Fe) impurities from J240-W with microwave-assisted acid leaching strategy. The influence factors on the Al2 O3 leaching ratio, such as leaching temperature, sulfuric acid concentration, liquid-solid ratio and time, have been investigated and optimized...
October 15, 2018: Journal of Environmental Management
Huile Jin, Yongfeng Bu, Jun Li, Jianping Liu, Xing Fen, Liming Dai, Jichang Wang, Jun Lu, Shun Wang
The rational design and construction of 3D graphene assemblies is a crucial step to extend the graphene properties for practical applications. Here, a novel interfacially reactive self-assembling process is reported to prepare well-organized 3D honeycomb-like graphene assemblies with unique polygonal nanopores interconnected by silicon-oxygen chemical bonds. The newly developed silicate-bridged graphene assembly (SGA) exhibits an exceptionally high hardness of 13.09 GPa, outperforming all existing 3D graphene materials, while maintains high Young's modulus (162...
July 19, 2018: Advanced Materials
Soomin Han, Kyoungho Han, Jaehwan Hong, Do-Young Yoon, Chulhwan Park, Younghun Kim
Plasmonic-mediated photothermal heating under near-infrared (NIR) irradiation is an emerging key technology in the field of photothermal therapy and chemical reactions. However, there are few reports of photothermal film (dry-type patch), and thus, in this work, we developed the plasmonic-induced photothermal cellulose-patch operating in the NIR region. Hollow and spikelike gold nanostructures, gold-spikes, as plasmonic nanoparticles were prepared and decorated on silica microrods, which were prepared based on a unicellular organism, Escherichia coli , as a framework...
May 31, 2018: ACS Omega
Kaushik Bera, Samarpan Maiti, Mritunjoy Maity, Chitra Mandal, Nakul C Maiti
With an aim to overcome multidrug resistance (MDR), nontargeted delivery, and drug toxicity, we developed a new nanochemotherapeutic system with tetrasodium salt of meso -tetrakis(4-sulfonatophenyl)porphyrin (TPPS) armored on gold nanoparticles (TPPS-AuNPs). The nanocarrier is able to be selectively internalized within tumor cells than in normal cells followed by endocytosis and therefore delivers the antitumor drug doxorubicin (DOX) particularly to the nucleus of diseased cells. The embedment of TPPS on the gold nanosurface provides excellent stability and biocompatibility to the nanoparticles...
April 30, 2018: ACS Omega
Jonida Toska, Brian T Ho, John J Mekalanos
The type 6 secretion system (T6SS) is a nanomachine used by many Gram-negative bacteria, including Vibrio cholerae , to deliver toxic effector proteins into adjacent eukaryotic and bacterial cells. Because the activity of the T6SS is dependent on direct contact between cells, its activity is limited to bacteria growing on solid surfaces or in biofilms. V. cholerae can produce an exopolysaccharide (EPS) matrix that plays a role in adhesion and biofilm formation. In this work, we investigated the effect of EPS production on T6SS activity between cells...
July 31, 2018: Proceedings of the National Academy of Sciences of the United States of America
Chao Gao, Benjamin P J Hasseldine, Ling Li, James C Weaver, Yaning Li
Protective armors are widespread in nature and often consist of periodic arrays of tile-like building blocks that articulate with each other through undulating interfaces. To investigate the mechanical consequences of these wavy tessellations, especially in instances where the amplitude of the undulations is near the scale of the constituent tiles as is found in the seedcoats of many plant species, an approach that integrates parametric modeling and finite element simulations with direct mechanical testing on their 3D-printed multi-material structural analogues is presented...
July 17, 2018: Advanced Materials
Roger O Kollock, Davis Hale, Rachele Vogelpohl, Logan Kremer, Josh Horner, Christian Cox, Matt Allen
Body armor is essential to the protection of military personnel; however, body armor may impede the users balance and movement quality. A better understanding of the influence of body armor on balance and movement quality may help in the development of new guidelines for training standards and procedures to mitigate the risk of injury associated with wearing of body armor in warfighters. The purpose of this study was to identify the effects of body armor (combat boots, tactical vest and combat helmet) on balance and movement quality in male military cadets and personnel...
2018: International Journal of Exercise Science
Agata Plesnar-Bielak, Anna Maria Skwierzyńska, Kasper Hlebowicz, Jacek Radwan
BACKGROUND: The maintenance of considerable genetic variation in sexually selected traits (SSTs) is puzzling given directional selection expected to act on these traits. A possible explanation is the existence of a genotype-by-environment (GxE) interaction for fitness, by which elaborate SSTs are favored in some environments but selected against in others. In the current study, we look for such interactions for fitness-related traits in the bulb mite, a male-dimorphic species with discontinuous expression of a heritable SST in the form of enlarged legs that are used as weapons...
July 11, 2018: BMC Evolutionary Biology
Yu Fu, Rui Zhang, Qisheng Wu, Jiawei Zhang, Lihua Bao, Jinming Li
BACKGROUND: Standards play an important role in detection of the BCR-ABL1 fusion gene (FG) transcript. However, the standards widely used in laboratories are mainly based on plasmids or cDNA, which cannot accurately reflect the process of RNA extraction and cDNA synthesis. Therefore, we aimed to develop armored RNA-based standards for p210 and p190 BCR-ABL1FG transcripts' quantification. METHODS: Using overlapping polymerase chain reaction (PCR) technology, we first linked a segment of the p210 or p190 BCR-ABL1FG transcript with four control genes (CGs; ABL1, BCR, GUSB, and B2M) to form p210FG-CG and p190FG-CG...
June 29, 2018: Journal of Clinical Laboratory Analysis
Geovane A DE Souza, Victor O Moresca, Gustavo M Teixeira, Fernando C Jerep, Aline Aguiar
Schyzocotyle acheilognathi is a tapeworm cestode commonly found in native freshwater fishes from Asia. This cestode has low host specificity and for that reason it has been registered parasitizing more than 200 cultured and wild fish species, besides amphibians, reptiles and birds from different regions of the world. With a high pathogenic potential, S. acheilognathi may cause mortalities in highly infected fish. In South America, Schyzocotyle was reported in Cyprinus carpio from a Brazilian fish farm at the municipality of Cornélio Procópio, northern Paraná State and from the natural environment in C...
June 25, 2018: Anais da Academia Brasileira de Ciências
Jian Jiang, Han Zhang, Jianhui Zhu, Linpo Li, Yani Liu, Ting Meng, Lai Ma, Maowen Xu, Jinping Liu, Chang Ming Li
Practical utilization of silicon (Si) for Li-ion batteries (LIBs) still remains sluggish because of its formidable kinetic problems of huge volume expansions over 300%, instable solid electrolyte interphase (SEI), and unsatisfactory electrical conductivity. Though using a yolk-shell (Y-S) Si@C nanodesign indeed helps to mitigate active changes, optimize SEI properties, and lower intrinsic charge-transfer impedances, the total anodic behaviors in reversibility, rate capabilities, and long-lasting cyclability are still far from perfect...
July 18, 2018: ACS Applied Materials & Interfaces
Mohammad Gholami, Kazem Baesi, Mehrdad Ravanshad, Siamak M Samiee, Negin H Rouzbahani, Minoo Mohraz
BACKGROUND: Human immunodeficiency virus-1 (HIV-1) is a viral infectious agent that gradually extinguishes the immune system, resulting in the acquired immune deficiency syndrome (AIDS). The aim of this study was to develop a TaqMan based detection assay to evaluate HIV-1 plasma viral load and to construct a stable internal positive control (IPC) and external positive control (EPC) RNA based on Armored RNA (AR) technology. METHODS: The MS2 maturase, coat protein gene and HIV-1 pol gene were cloned in pET-32a plasmid...
June 1, 2018: Clinical Laboratory
Carole Planchette, Elise Lorenceau, Anne-Laure Biance
Reversible encapsulation of liquid materials is a technical challenge in many applications such as for the transport and controlled delivery of active ingredients. In contrast to most state-of-the-art processes, capillary adsorbed solid particles can achieve chemical-reaction-free encapsulation by forming dense rafts which isolate the liquid from its surroundings. While the production conditions of such capsules have been characterized, the control of the armor robustness remains poorly described and understood...
June 25, 2018: Soft Matter
Jules Lin
No abstract text is available yet for this article.
May 29, 2018: Journal of Thoracic and Cardiovascular Surgery
Nicholas Brandmeir, Russell Payne, Elias Rizk, R Shane Tubbs, Juan Luis Arsuaga, Antonis Bartsiokas
Objective King Philip II, the father of Alexander the Great, suffered a penetrating wound to the leg from a spear that left him severely handicapped. His skeletal remains represent the first and only case of an injury from ancient Greece that can be directly compared to its historical record. The objective of the study was to confirm the identity of the male occupant of Royal Tomb I in Vergina, Greece as Philip II of Macedonia by providing new evidence based on anatomical dissection and correlation with the historical description of the wounds...
April 18, 2018: Curēus
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