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https://www.readbyqxmd.com/read/28644675/origin-of-noncubic-scaling-law-in-disordered-granular-packing
#1
Chengjie Xia, Jindong Li, Binquan Kou, Yixin Cao, Zhifeng Li, Xianghui Xiao, Yanan Fu, Tiqiao Xiao, Liang Hong, Jie Zhang, Walter Kob, Yujie Wang
Recent diffraction experiments on metallic glasses have unveiled an unexpected noncubic scaling law between density and average interatomic distance, which led to the speculation of the presence of fractal glass order. Using x-ray tomography we identify here a similar noncubic scaling law in disordered granular packing of spherical particles. We find that the scaling law is directly related to the contact neighbors within the first nearest neighbor shell, and, therefore, is closely connected to the phenomenon of jamming...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644674/constraints-on-oscillation-parameters-from-%C3%AE-_-e-appearance-and-%C3%AE-_-%C3%AE-disappearance-in-nova
#2
P Adamson, L Aliaga, D Ambrose, N Anfimov, A Antoshkin, E Arrieta-Diaz, K Augsten, A Aurisano, C Backhouse, M Baird, B A Bambah, K Bays, B Behera, S Bending, R Bernstein, V Bhatnagar, B Bhuyan, J Bian, T Blackburn, A Bolshakova, C Bromberg, J Brown, G Brunetti, N Buchanan, A Butkevich, V Bychkov, M Campbell, E Catano-Mur, S Childress, B C Choudhary, B Chowdhury, T E Coan, J A B Coelho, M Colo, J Cooper, L Corwin, L Cremonesi, D Cronin-Hennessy, G S Davies, J P Davies, P F Derwent, R Dharmapalan, P Ding, Z Djurcic, E C Dukes, H Duyang, S Edayath, R Ehrlich, G J Feldman, M J Frank, M Gabrielyan, H R Gallagher, S Germani, T Ghosh, A Giri, R A Gomes, M C Goodman, V Grichine, R Group, D Grover, B Guo, A Habig, J Hartnell, R Hatcher, A Hatzikoutelis, K Heller, A Himmel, A Holin, J Hylen, F Jediny, M Judah, G K Kafka, D Kalra, S M S Kasahara, S Kasetti, R Keloth, L Kolupaeva, S Kotelnikov, I Kourbanis, A Kreymer, A Kumar, S Kurbanov, K Lang, W M Lee, S Lin, J Liu, M Lokajicek, J Lozier, S Luchuk, K Maan, S Magill, W A Mann, M L Marshak, K Matera, V Matveev, D P Méndez, M D Messier, H Meyer, T Miao, W H Miller, S R Mishra, R Mohanta, A Moren, L Mualem, M Muether, S Mufson, R Murphy, J Musser, J K Nelson, R Nichol, E Niner, A Norman, T Nosek, Y Oksuzian, A Olshevskiy, T Olson, J Paley, P Pandey, R B Patterson, G Pawloski, D Pershey, O Petrova, R Petti, S Phan-Budd, R K Plunkett, R Poling, B Potukuchi, C Principato, F Psihas, A Radovic, R A Rameika, B Rebel, B Reed, D Rocco, P Rojas, V Ryabov, K Sachdev, P Sail, O Samoylov, M C Sanchez, R Schroeter, J Sepulveda-Quiroz, P Shanahan, A Sheshukov, J Singh, J Singh, P Singh, V Singh, J Smolik, N Solomey, E Song, A Sousa, K Soustruznik, M Strait, L Suter, R L Talaga, M C Tamsett, P Tas, R B Thayyullathil, J Thomas, X Tian, S C Tognini, J Tripathi, A Tsaris, J Urheim, P Vahle, J Vasel, L Vinton, A Vold, T Vrba, B Wang, M Wetstein, D Whittington, S G Wojcicki, J Wolcott, N Yadav, S Yang, J Zalesak, B Zamorano, R Zwaska
Results are reported from an improved measurement of ν_{μ}→ν_{e} transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^{20} protons on target, 33 ν_{e} candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_{μ} disappearance data and external constraints from reactor experiments on sin^{2}2θ_{13}, the hypothesis of inverted mass hierarchy with θ_{23} in the lower octant is disfavored at greater than 93% C.L. for all values of δ_{CP}.
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644504/a-structural-mechanism-of-flavonoids-in-inhibiting-serine-proteases
#3
Guangpu Xue, Lihu Gong, Cai Yuan, Mingming Xu, Xu Wang, Longguang Jiang, Mingdong Huang
Quercetin is a member of the flavonoids and was previously demonstrated to inhibit trypsin-like serine proteases at micromolar potencies. Different molecular models were proposed to explain such inhibition. However, controversies remain on the molecular details of inhibition. Here, we report the X-ray crystal structure of quercetin in a complex with the urokinase-type plasminogen activator (uPA), an archetypical serine protease. The structure showed that quercetin binds to the specific substrate binding pocket (S1 pocket) of uPA mainly through its two neighboring phenolic hydroxyl groups...
June 23, 2017: Food & Function
https://www.readbyqxmd.com/read/28643466/anemonin-attenuates-osteoarthritis-progression-through-inhibiting-the-activation-of-il-1%C3%AE-nf-%C3%AE%C2%BAb-pathway
#4
Zuqiang Wang, Junlan Huang, Siru Zhou, Fengtao Luo, Wei Xu, Quan Wang, Qiaoyan Tan, Liang Chen, Jun Wang, Hangang Chen, Lin Chen, Yangli Xie, Xiaolan Du
The osteoarthritis (OA) progression is now considered to be related to inflammation. Anemonin (ANE) is a small natural molecule extracted from various kinds of Chinese traditional herbs and has been shown to inhibiting inflammation response. In this study, we examined whether ANE could attenuate the progression of OA via suppression of IL-1β/NF-κB pathway activation. Destabilization of the medial meniscus (DMM) was performed in 10-week-old male C57BL/6J mice. ANE was then intra-articularly injected into joint capsule for 8 and 12 weeks...
June 23, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28643298/a-comparison-of-clinical-efficacy-and-economic-value-in-basalin-and-lantus-treated-patients-with-type-2-diabetes-using-continuous-glucose-monitoring-system
#5
H Q Li, C F Lu, J Wang, G P Yin, R Sun, X H Xu, B L Liu, F F Li, T Jing, K O Lee, L Ye, J H Ma, X F Su
AIM: To determine the clinical non-inferiority of recombinant glargine-Basalin vs glargine-Lantus, in treatment of type 2 diabetes mellitus (T2DM) using continuous glucose monitoring system (CGMS). METHODS: One hundred patients with T2DM were recruited. They were either regularly taking Basalin (Basalin group) or Lantus (Lantus group) (n = 50 each). CGMS was employed to real-time monitor blood glucose profile for 4 days (from day 1 to day 5). To exclude the effect of patient background, the study design was to have a blinded crossover from glargine-Basalin to glargine-Lantus on day 3, and vice versa...
June 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28642987/chromosome-number-and-genome-size-variation-in-colocasia-araceae-from-china
#6
Guang-Yan Wang, Xiao-Ming Zhang, Min Qian, Xiang-Yang Hu, Yong-Ping Yang
Chromosome number and genome size are important cytological characters that significantly influence various organismal traits. We investigated chromosome number and genome size variation in 73 accessions belonging to four Colocasia species from China. Five different chromosome counts (2n = 26, 28, 38, 42, and 56) were found, the largest one representing a new record in Colocasia. The basic chromosome numbers are x = 13, 14, and 19, corresponding to 2x, 3x, and 4x cytotypes. Yunnan Province, China is considered the center of Colocasia polyploid origin...
June 22, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28642619/understanding-the-unusual-response-to-high-pressure-in-kbe2bo3f2
#7
D H Yu, M Avdeev, D H Sun, L Q Huston, Thomas B Shiell, Q B Sun, T Lu, Q Gu, H Liu, J E Bradby, N Yie, Y Liu, J Y Wang, G J McIntyre
Strong anisotropic compression with pressure on the remarkable non-linear optical material KBe2BO3F2 has been observed with the linear compression coefficient along the c axis found to be about 40 times larger than that along the a axis. An unusual non-monotonic pressure response was observed for the a lattice parameter. The derived bulk modulus of 31 ± 1 GPa indicates that KBe2BO3F2 is a very soft oxide material yet with stable structure up to 45 GPa. A combination of high-pressure synchrotron powder X-ray diffraction, high-pressure Raman spectroscopy, and Density Functional Theory calculations points to the mechanism for the unusual pressure response being due to the competition between the K-F bond length and K-F-K bond angle and the coupling between the stretching and twisting vibration modes...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642591/donor-and-recipient-age-gender-and-abo-incompatibility-regardless-of-donor-source-validated-criteria-for-donor-selection-for-hematopoietic-transplants
#8
Y Wang, D-P Wu, Q-F Liu, L-P Xu, K-Y Liu, X-H Zhang, Y Xu, F Huang, X-J Huang
Prior data indicate similar outcomes after transplants from HLA-haplotype-matched relatives, HLA-identical siblings and HLA-matched unrelated donors. We used our prospective dataset to answer a clinically important question: who is the best donor for a person with acute leukemia transplanted in 1st complete remission. Patients were randomly divided into training (n=611) and validation (n=588) sets. 1199 consecutive subjects received a transplant from an HLA-haplotype-matched relative using granulocyte colony-stimulating factor (G-CSF) and anti-thymocyte globulin (ATG) (n=685) or an HLA-identical sibling (n=514); 3-year leukaemia-free survivals (LFSs) were 75 and 74% (P=0...
June 23, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28642477/probing-ultrafast-%C3%AF-%C3%AF-n%C3%AF-internal-conversion-in-organic-chromophores-via-k-edge-resonant-absorption
#9
T J A Wolf, R H Myhre, J P Cryan, S Coriani, R J Squibb, A Battistoni, N Berrah, C Bostedt, P Bucksbaum, G Coslovich, R Feifel, K J Gaffney, J Grilj, T J Martinez, S Miyabe, S P Moeller, M Mucke, A Natan, R Obaid, T Osipov, O Plekan, S Wang, H Koch, M Gühr
Many photoinduced processes including photosynthesis and human vision happen in organic molecules and involve coupled femtosecond dynamics of nuclei and electrons. Organic molecules with heteroatoms often possess an important excited-state relaxation channel from an optically allowed ππ* to a dark nπ* state. The ππ*/nπ* internal conversion is difficult to investigate, as most spectroscopic methods are not exclusively sensitive to changes in the excited-state electronic structure. Here, we report achieving the required sensitivity by exploiting the element and site specificity of near-edge soft X-ray absorption spectroscopy...
June 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28642243/anti-inflammatory-and-anti-osteoarthritis-effects-of-tectorigenin
#10
Cheng-Long Wang, De Li, Chuan-Dong Wang, Fei Xiao, Jun-Feng Zhu, Chao Shen, Bin Zuo, Yi-Min Cui, Hui Wang, Yuan Gao, Guo-Li Hu, Xiao-Ling Zhang, Xiao-Dong Chen
Osteoarthritis (OA) is a common and dynamic joint disease, including the articular cartilage, underlying bones, and synovium. In particular, OA is considered as the degeneration of the cartilage. Tectorigenin (Tec) can affect many biological processes. However, its effect on articular chondrocytes remains unclear. This study aimed to assess the role of Tec in articular cartilage. In vitro, Tec inhibited the expression levels of type X collagen, cyclooxigenase-2, matrix metalloproteinase (MMP)-3, and MMP-13 gene but enhanced those of Runx1, type II collagen, and aggrecan in the presence of IL-1β...
June 22, 2017: Biology Open
https://www.readbyqxmd.com/read/28642154/a-boosting-skin-vaccination-with-dissolving-microneedle-patch-encapsulating-m2e-vaccine-broadens-the-protective-efficacy-of-conventional-influenza-vaccines
#11
Wandi Zhu, Winston Pewin, Chao Wang, Yuan Luo, Gilbert X Gonzalez, Teena Mohan, Mark R Prausnitz, Bao-Zhong Wang
The biodegradable microneedle patch (MNP) is a novel technology for vaccine delivery that could improve the immunogenicity of vaccines. To broaden the protective efficiency of conventional influenza vaccines, a new 4M2e-tFliC fusion protein construct containing M2e sequences from different subtypes was generated. Purified fusion protein was encapsulated into MNPs with a biocompatible polymer for use as a boosting vaccine. The results demonstrated that mice receiving a conventional inactivated vaccine followed by a skin-applied dissolving 4M2e-tFliC MNP boost could better maintain the humoral antibody response than that by the conventional vaccine-prime alone...
June 19, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28641456/a-new-antiviral-pregnane-from-a-gorgonian-derived-cladosporium-sp-fungus
#12
Mei-Lin Yu, Fei-Fei Guan, Fei Cao, Yan-Lai Jia, Chang-Yun Wang
A new pregnane, 3α-hydroxy-7-ene-6,20-dione (1), and five known steroids (2-6), along with one known steroidal glycoside (7) were obtained from the fungus Cladosporium sp. WZ-2008-0042 cultured from a gorgonian Dichotella gemmacea collected from the South China Sea. The structure and absolute configuration of the new compound (1) were elucidated by comprehensive spectroscopic data and X-ray diffraction data. The compound has a rare configuration of 3α-OH that is different from most of pregnanes. All of the isolated compounds were evaluated for their antiviral activities against respiratory syncytial virus (RSV)...
June 23, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28641439/high-pressure-phase-transition-of-alkali-metal-transition-metal-deuteride-li2pdd2
#13
Yansun Yao, Elissaios Stavrou, Alexander F Goncharov, Arnab Majumdar, Hui Wang, Vitali B Prakapenka, Albert Epshteyn, Andrew P Purdy
A combined theoretical and experimental study of lithium palladium deuteride (Li2PdD2) subjected to pressures up to 50 GPa reveals one structural phase transition near 10 GPa, detected by synchrotron powder x-ray diffraction, and metadynamics simulations. The ambient-pressure tetragonal phase of Li2PdD2 transforms into a monoclinic C2/m phase that is distinct from all known structures of alkali metal-transition metal hydrides/deuterides. The structure of the high-pressure phase was characterized using ab initio computational techniques and from refinement of the powder x-ray diffraction data...
June 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28641371/effects-of-changes-in-leaf-properties-mediated-by-methyl-jasmonate-meja-on-foliar-absorption-of-zn-mn-and-fe
#14
Cui Li, Peng Wang, Neal W Menzies, Enzo Lombi, Peter M Kopittke
Background and Aims: Foliar fertilization to overcome nutritional deficiencies is becoming increasingly widespread. However, the processes of foliar nutrient absorption and translocation are poorly understood. The present study aimed to investigate how cuticular leaf properties affect the absorption of foliar-applied nutrients in leaf tissues. Methods: Given that methyl jasmonate (MeJA) can cause alterations in leaf properties, we applied 1 m m MeJA to sunflower ( Helianthus annuus ), tomato ( Solanum lycopersicum ) and soybean ( Glycine max ) to assess changes in leaf properties...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28641005/electron-crystallography-reveals-atomic-structures-of-metal-organic-nanoplates-with-m12-%C3%AE-3-o-8-%C3%AE-3-oh-8-%C3%AE-2-oh-6-m-zr-hf-secondary-building-units
#15
Ruihan Dai, Fei Peng, Pengfei Ji, Kuangda Lu, Cheng Wang, Junliang Sun, Wenbin Lin
Nanoscale metal-organic frameworks (nMOFs) have shown tremendous potential in cancer therapy and biomedical imaging. However, their small dimensions present a significant challenge in structure determination by single-crystal X-ray crystallography. We report here the structural determination of nMOFs by rotation electron diffraction (RED). Two isostructural Zr- and Hf-based nMOFs with linear biphenyldicarboxylate (BPDC) or bipyridinedicarboxylate (BPYDC) linkers are stable under intense electron beams to allow the collection of high-quality RED data, which reveal a MOF structure with M12(μ3-O)8(μ3-OH)8(μ2-OH)6 (M = Zr, Hf) secondary building units (SBUs)...
June 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28640583/fluffy-and-ordered-graphene-multilayer-films-with-improved-electromagnetic-interference-shielding-over-x-band
#16
Zicheng Wang, Renbo Wei, Xiaobo Liu
Highly ordered nitrogen-doped graphene multilayer films with large interlayer void are successfully fabricated by thermal annealing the compact stacking graphene oxide/copper phthalocyanine (GO/CuPc) multilayer films. Scanning electron microscopic (SEM), X-ray diffraction (XRD), Raman, X-ray photoelectron spectroscopic (XPS) and electrical conductivity measurements indicate that the breakaway of oxygen functional groups on/in the GO sheets at high temperature and the in-situ pyrolysis of CuPc molecules in the interlayer of graphene sheets synergistically facilitate the restoration of GO in graphitization, the effective nitrogen doping by replacing carbon atoms in graphene frameworks, the retention of layer-by-layer stacking structure of graphene sheets in plane and the formation of interlayer voids, leading to the enhancement in the electrical conductivity (3...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28639705/cloning-and-characterization-of-iron-superoxide-dismutase-in-antarctic-yeast-strain-rhodotorula-mucilaginosa-an5
#17
Guangfeng Kan, Hua Wen, Xiaofei Wang, Ting Zhou, Cuijuan Shi
A novel superoxide dismutase gene from Antarctic yeast Rhodotorula mucilaginosa AN5 was cloned, sequenced, and then expressed in Escherichia coli. The R. mucilaginosa AN5 SOD (RmFeSOD) gene was 639 bp open reading frame in length, which encoded a protein of 212 amino acids with a deduced molecular mass of 23.5 kDa and a pI of 7.89. RmFeSOD was identified as iron SOD type with a natural status of homodimer. The recombinant RmFeSOD showed good pH stability in the pH 1.0-9.0 after 1 h incubation. Meanwhile, it was found to behave relatively high thermostability, and maintained more than 80% activity at 50 °C for 1 h...
June 22, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28639665/isolation-and-identification-of-l-d-lactate-conjugated-bufadienolides-from-toad-eggs-revealing-lactate-racemization-in-amphibians
#18
Shiwen Zhou, Qingfei Zheng, Xiuyong Huang, Yong Wang, Sifan Luo, Renwang Jiang, Lei Wang, Wencai Ye, Haiyan Tian
Three pairs of bufadienolide l/d-lactate epimers (1-6) were isolated from the eggs of the toad Bufo bufo gargarizans. The structures were elucidated by using spectroscopic methods, X-ray diffraction analysis and a modified Mosher's method. Compounds 1-6 represent the first occurrence of lactate-conjugated bufadienolides in nature, and illustrate the existence of an enzyme-controlled epimerization from l- to d-lactate in amphibians. The biosynthetic pathways, in which two key enzymes might be involved (i.e., lactate racemase and acyltransferase), were proposed...
June 22, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28639663/the-electronic-transport-properties-of-zigzag-phosphorene-like-mx-m-ge-sn-x-s-se-nanostructures
#19
Mengjun Zhang, Yipeng An, Yongqiang Sun, Dapeng Wu, Xuenian Chen, Tianxing Wang, Guoliang Xu, Kun Wang
Single-layer phosphorene-like MX sheets have aroused new interest and could become a family of nanomaterials in physics and materials science. Using a first-principles method combined with non-equilibrium Green's function (NEGF) theory, we study the electronic transport properties of the zigzag phosphorene-like MX (M = Ge/Sn, X = S/Se) nanostructures. The results demonstrate that GeS and GeSe nanoribbons display very similar electronic transport properties. Their current-voltage (I-V) curves exhibit an interesting negative differential resistive (NDR) effect and are insensitive to their ribbon widths due to their similar band structures...
June 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28639541/influence-of-hyaluronan-nasal-dressing-on-clinical-outcome-after-endoscopic-sinus-surgery-a-systematic-review-and-meta-analysis
#20
J Chen, X Wang, L Chen, J Liu
INTRODUCTION: Hyaluronan nasal dressing might be promising in promoting reepithelialization after endoscopic sinus surgery (ESS). However, the results remain controversial. We conducted a systematic review and meta-analysis to explore the effects of hyaluronan nasal dressing on clinical outcome after ESS. METHODS: Medical literature data bases were systematically searched. Randomized controlled trials (RCT) that assessed the effect of hyaluronan nasal dressing on the outcome after ESS were included...
June 14, 2017: American Journal of Rhinology & Allergy
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