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Yang Liu, Yu Zhang, Shao-Nong Chen, J Brent Friesen, Dejan Nikolić, Mary P Choules, James B McAlpine, David C Lankin, Richard A Gemeinhart, Guido F Pauli
Natural Deep Eutectic Solvent (NADES) species can exhibit unexpected solubilizing power for lipophilic molecules despite their simple composition, hydrophilic organic molecules and water. In the present study, the unique properties of NADES species were applied in combination with a model polymer system: a hydrophilic chitosan/alginate hydrogel. Briefly, NADES species (e.g., mannose-dimethylurea-water, 2:5:5, mole/mole) formed matrices to 1) dissolve lipophilic molecules (e.g., curcumin), 2) load lipophilic molecule(s) into the hydrogel, and 3) spontaneously vacate from the system...
February 20, 2018: Fitoterapia
Q Dumoulin, S Sabau, T Goetzmann, A Jacquot, F Sirveaux, D Mole, O Roche
INTRODUCTION: The PFMR® proximal femoral modular reconstruction implant (Protek, Sulzer Orthopedics, Switzerland) is a straight modular stem in sanded titanium with press-fit anchorage, intended to achieve spontaneous bone reconstruction following Wagner's principle. The aim of the present study was to analyze long-term clinical and radiological outcome. MATERIAL AND METHOD: A single-center retrospective study included 48 PFMR stems implanted in 47 patients between 1998 and 2002...
February 20, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
Mariela Faykoo-Martinez, D Ashley Monks, Iva B Zovkic, Melissa M Holmes
The social environment can alter pubertal timing through neuroendocrine mechanisms that are not fully understood; it is thought that stress hormones (e.g., glucocorticoids or corticotropin-releasing hormone) influence the hypothalamic-pituitary-gonadal axis to inhibit puberty. Here, we use the eusocial naked mole-rat, a unique species in which social interactions in a colony (i.e. dominance of a breeding female) suppress puberty in subordinate animals. Removing subordinate naked mole-rats from this social context initiates puberty, allowing for experimental control of pubertal timing...
2018: PloS One
Parashu R Nyaupane, Marlon Diaz, Ann Barton, Carlos E Manzanares
The thermal lens technique is applied to vibrational overtone spectroscopy of solutions of naphthalene (C10 H8 ) in liquid hexane. The C-H fifth vibrational (Δν = 6) overtone spectrum of C10 H8 is detected at room temperature for mole fractions from 0.08 to 19 × 10-6 using n-C6 H14 as solvent. By detecting the absorption band in a 19 ppm (parts per million) solution, the peak absorption of the signal is approximately (2.2 ± 0.3) × 10-7  cm-1 . A plot of normalized integrated intensity as a function of the mole fraction of naphthalene in solution reveals a dependence of the magnitude of the signal with the probe laser wavelength...
January 1, 2018: Applied Spectroscopy
Arya Das, Sk Musharaf Ali
Tri-isoamyl phosphate (TiAP) has been proposed to be an alternative for tri-butyl phosphate (TBP) in the Plutonium Uranium Extraction (PUREX) process. Recently, we have successfully calibrated and tested all-atom optimized potentials for liquid simulations using Mulliken partial charges for pure TiAP, TBP, and dodecane by performing molecular dynamics (MD) simulation. It is of immense importance to extend this potential for the various molecular properties of TiAP and TiAP/n-dodecane binary mixtures using MD simulation...
February 21, 2018: Journal of Chemical Physics
Miquel Torrents-Ticó, Nigel C Bennett, Jennifer U M Jarvis, Markus Zöttl
In naked mole-rats ( Heterocephalus glaber ), some non-breeding males show faster growth and are more likely to disperse than others. These differences have been suggested to be the result of a specialized developmental strategy leading to shorter philopatry and independent breeding, as opposed to extended philopatry as non-reproductive helpers. However, it is unclear whether fast-growing males disperse sooner than slow-growing males. An alternative explanation is that variation in quality between individuals causes high-quality individuals to grow quickly and maximize dispersal success without reducing philopatry...
February 2018: Biology Letters
Songfeng E, Chaowei Li, Taotao Li, Renjie Geng, Qiulong Li, Weibang Lu, Yagang Yao
Ammonium tungstate ((NH4)10W12O41·xH2O) is a one kind of oxygen-containing ammonium salt. The following study proved that it could be successfully used as an alternative of metal oxide to produce boron oxide (B2O2) by oxidizing boron (B) in traditional boron oxide chemical vapor deposition (BOCVD) process. This special oxidant promoted the simplistic fabrication of boron nitride nanotubes (BNNTs) in a conventional horizontal tube furnace, which may have resulted from its strong oxidizability. The experimental results demonstrated that the mole ratio of B and (NH4)10W12O41·xH2O was a key parameter in determining the formation, quality, and quantity of BNNTs when stainless steel was employed as a catalyst...
February 21, 2018: Nanotechnology
Nikki R Adler, Patrick D Mahar, John W Kelly
BACKGROUND: Legal and ethical obligations do not always align when doctors become aware of a clinical situation involving a person with whom they have no pre existing therapeutic relationship. Noting a potentially malignant skin lesion, such as a melanoma on a person outside the clinical setting, provides a pertinent example. OBJECTIVE: The aim of this article is to describe the legal, ethical and professional considerations surrounding proffering a dermatological opinion in the case of suspected melanoma outside the clinical setting...
December 2017: Australian Family Physician
Tao Pan
Transfer RNA (tRNA) is present at tens of millions of transcripts in a human cell and is the most abundant RNA in moles among all cellular RNAs. tRNA is also the most extensively modified RNA with, on an average, 13 modifications per molecule. The primary function of tRNA as the adaptor of amino acids and the genetic code in protein synthesis is well known. tRNA modifications play multi-faceted roles in decoding and other cellular processes. The abundance, modification, and aminoacylation (charging) levels of tRNAs contribute to mRNA decoding in ways that reflect the cell type and its environment; however, how these factors work together to maximize translation efficiency remains to be understood...
February 20, 2018: Cell Research
Ngoc Minh Phuong Nguyen, Yassemine Khawajkie, Nawel Mechtouf, Maryam Rezaei, Magali Breguet, Elvira Kurvinen, Sujatha Jagadeesh, Asli Ece Solmaz, Monica Aguinaga, Reda Hemida, Mehmet Ibrahim Harma, Cécile Rittore, Kurosh Rahimi, Jocelyne Arseneau, Karine Hovanes, Ronald Clisham, Tiffanee Lenzi, Bonnie Scurry, Marie-Claude Addor, Rashmi Bagga, Genevieve Girardet Nendaz, Vildana Finci, Gemma Poke, Leslie Grimes, Nerine Gregersen, Kayla York, Pierre-Adrien Bolze, Chirag Patel, Hossein Mozdarani, Jacques Puechberty, Jessica Scotchie, Majid Fardaei, Muge Harma, R J McKinlay Gardner, Trilochan Sahoo, Tracy Dudding-Byth, Radhika Srinivasan, Philippe Sauthier, Rima Slim
Hydatidiform mole is an aberrant human pregnancy characterized by early embryonic arrest and excessive trophoblastic proliferation. Recurrent hydatidiform moles are defined by the occurrence of at least two hydatidiform moles in the same patient. Fifty to eighty percent of patients with recurrent hydatidiform moles have biallelic pathogenic variants in NLRP7 or KHDC3L. However, in the remaining patients, the genotypic types of the moles are unknown. We characterized 80 new hydatidiform mole tissues, 57 of which were from patients with no mutations in the known genes, and we reviewed the genotypes of a total of 123 molar tissues...
February 20, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
Najmeh Moein-Vaziri, Jafar Fallahi, Bahia Namavar-Jahromi, Majid Fardaei, Mozhdeh Momtahan, Zahra Anvar
Hydatidiform Mole (HM) is the most common form of Gestational Trophoblastic Disease (GTD), defined by hyper-proliferation of trophoblastic cells. HM is typified as abnormal proliferation of extraembryonic trophoblastic (placental) tissues and failure of embryonic tissues development and is the only GTD with Mendelian inheritance, which can reoccur in different pregnancies. Moles are categorized into Complete Hydatidiform Moles (CHM) or Partial Hydatidiform Moles (PHM) and a rare familial trait, which forms a CHM and despite having androgenetic pattern, shows normal biparental inheritance, conceived from one sperm and egg...
February 2018: Taiwanese Journal of Obstetrics & Gynecology
N P Radhika, Rosilda Selvin, Rita Kakkar, L Selva Roselin
In this paper, authors report the synthesis of nanocrystalline hierarchical zeolite ZSM-5 and its application as a heterogeneous catalyst in the alkylation of phenol with cyclohexene. The catalyst was synthesized by vacuum-concentration coupled hydrothermal technique in the presence of two templates. This synthetic route could successfully introduce pores of higher hierarchy in the zeolite ZSM-5 structure. Hierarchical ZSM-5 could catalyse effectively the industrially important reaction of cyclohexene with phenol...
August 1, 2018: Journal of Nanoscience and Nanotechnology
Monica Conthe, Lea Wittorf, J Gijs Kuenen, Robbert Kleerebezem, Sara Hallin, Mark C M van Loosdrecht
Nitrous oxide (N2 O) reducing microorganisms may be key in the mitigation of N2 O emissions from managed ecosystems. However, there is still no clear understanding of the physiological and bioenergetic implications of microorganisms possessing either of the two N2 O reductase genes (nosZ), clade I and the more recently described clade II type nosZ. It has been suggested that organisms with nosZ clade II have higher growth yields and a lower affinity constant (Ks ) for N2 O. We compared N2 O reducing communities with different nosZI/nosZII ratios selected in chemostat enrichment cultures, inoculated with activated sludge, fed with N2 O as a sole electron acceptor and growth limiting factor, and acetate as electron donor...
February 19, 2018: Environmental Microbiology Reports
Chris T McAllister, Dagmara Motriuk-Smith, Catherine M Kerr
Three new species of coccidians (Apicomplexa: Eimeriidae) are described from eastern moles, Scalopus aquaticus (Linnaeus) from Arkansas. Oöcysts of Cyclospora duszynskii n. sp. are subspheroidal with a smooth bi-layered wall, measure 11.4 × 10.0 µm, and have a length/width (L/W) ratio of 1.1; both micropyle and oöcyst residuum are absent, but a single polar granule is present. Sporocysts are ellipsoidal and measure 7.2 × 5.4 µm, L/W 1.3; an indistinct Stieda body is present, but the sub-Stieda and para-Stieda bodies are absent and the sporocyst residuum is composed of medium to large granules of different sizes along the edge of the sporocyst...
February 19, 2018: Systematic Parasitology
Alae El Haitami, Michel Goldmann, Philippe Fontaine, Marie-Claude Fauré, Sophie Cantin
We studied by means of Grazing Incidence X-ray Diffraction (GIXD) coupled with X-ray fluorescence spectroscopy the structure of a behenic acid monolayer spread at the surface of Mg2+ /Mn2+ mixed aqueous solutions. For the pure Mg2+ and Mn2+ aqueous solutions, the cations induce at the surface different 2D lattice superstructures of the organic monolayer. These superstructures correspond to an inorganic organized monolayer anchored to the hydrophilic group of the ordered behenic acid monolayer. Among the various diffraction peaks, we focused on those characteristics of the behenic acid oblique cell...
February 19, 2018: Physical Chemistry Chemical Physics: PCCP
A D Redman, J D Butler, D J Letinski, D M Di Toro, M Leon Paumen, T F Parkerton
Solid-phase microextraction fibers coated with polydimethylsiloxane (PDMS) provide a convenient passive sampling format to characterize bioavailability of petroleum substances. Hydrocarbons absorb onto PDMS in proportion to both freely dissolved concentrations and partitioning properties of the individual constituents, which parallels the mechanistic basis used to predict aquatic toxicity in the PETROTOX model. When deployed in a non-depletive manner, combining SPME with thermal desorption and quantification using gas chromatography-flame ionization creates a biomimetic extraction (BE) procedure that has the potential to simplify aquatic hazard assessments of petroleum substances since the total moles of all hydrocarbons sorbed to the fiber can be related to toxic thresholds in target lipid of aquatic organisms...
February 7, 2018: Chemosphere
Zihao Zhang, Hao Cheng, Hao Chen, Kequan Chen, Xiuyang Lu, Pingkai Ouyang, Jie Fu
Modified H-type ZSM-5 (HZSM-5) catalysts were prepared using hexadecyl trimethyl ammonium bromide (CTAB) as mesopore templates to enhance the activity for the catalytic fast pyrolysis of rice straw for aromatics compounds. A certain quantity of CTAB added into the HZSM-5 (HZ) forming hierarchical structure exhibited an improvement in the yield of the aromatics and a decrease in the yield of coke in comparison with that of bare HZ. In contrast, excessive CTAB addition resulted in a decrease in aromatic yield and an increase in coke yield...
February 8, 2018: Bioresource Technology
Urika Joneborg, Yasin Folkvaljon, Nikos Papadogiannakis, Mats Lambe, Lena Marions
BACKGROUND: Reported incidence rates of hydatidiform mole (HM) show wide geographic and temporal variations, making reliable international comparisons difficult. The aim of the current study was to examine temporal trends in the incidence of HM and post-molar gestational trophoblastic neoplasia (GTN) in Stockholm County. MATERIAL AND METHODS: Data of all women with a diagnosis of HM in Stockholm County 1991-2010 was collected. The incidence of HM was assessed both in relation to number of births and viable conceptions (births and pregnancy terminations)...
February 16, 2018: Acta Oncologica
Jae Hyeon Park, Tae Whan Kim
Self-heating effect (SHE) on the electrical characteristics of fin field-effect transistors (FinFETs) model with a strained Si channel was investigated by using a three-dimensional simulation tool. Strain was applied from 0.1 to 2.0 GPa by changing Si mole fraction of the Si1-xGex. Simulation results showed that the drain current of the strained Si FinFETs increased with increasing applied strain from 0.5 to 2.0 GPa. The drain current of the FinFETs under strain of 2.0 GPa increased up to 20.59 μA. While the drain current of the FinFETs without a SHE increased with increasing strain, the increase of the drain current generating from the strain interrupted the applications for the practical device operation due to a large SHE...
March 1, 2018: Journal of Nanoscience and Nanotechnology
Michiru Sogawa, Hikaru Kawanoue, Yanko Marinov Todorov, Daisuke Hirayama, Hideyuki Mimura, Nobuko Yoshimoto, Masayuki Morita, Kenta Fujii
The structural and electrochemical properties of lithium-ion solvation complexes in a nonflammable organic solvent, tris(2,2,2-trifluoroethyl)phosphate (TFEP) containing ethylene carbonate (EC), were investigated using vibrational spectroscopic and electrochemical measurements. Based on quantitative Raman and infrared (IR) spectral analysis of the Li bis(trifluoromethanesulfonyl)amide (TFSA) salt in TFEP + EC electrolytes, we successfully evaluated the individual solvation numbers of EC (n EC ), TFEP (n TFEP ), and TFSA - (n TFSA ) in the first solvation sphere of the Li-ion...
February 15, 2018: Physical Chemistry Chemical Physics: PCCP
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