Aqueous Solution Preparation, Structure, and Magnetic Properties of Nano-Granular ZnxFe3−xO4 Ferrite Films

This paper reports a simple and novel process for preparing nano-granular ZnxFe3−xO4 ferrite films (0 ≤ x ≤ 0.99) on Ag-coated glass substrates in DMAB-Fe(NO3)3-Zn(NO3)2 solutions. The deposition process may be applied in preparing other cations-doped spinel ferrite films. The Zn content x in the ZnxFe3−xO4 films depends linearly on the Zn2+ ion concentration ranging from 0.0 to 1.0 mM in the aqueous solutions. With x increasing from 0 to 0.99, the lattice constant increases from 0.8399 to 0.8464 nm; and the microstructure of the films changes from the non-uniform nano-granules to the fine and uniform nano-granules of 50–60 nm in size. The saturation magnetization of the films first increases from 75 emu/g to the maximum 108 emu/g with x increasing from 0 to 0.33 and then decreases monotonously to 5 emu/g with x increasing from 0.33 to 0.99. Meanwhile, the coercive force decreases monotonously from 116 to 13 Oe

Discourses of Collective Spirituality and Turkish Islamic Ethics:An Inquiry into Transcendence, Connectedness, and Virtuousness in Anatolian Tigers

Based on case studies and qualitative interviews conducted with 40 stakeholders in five SMEs, or so called Anatolian tigers, in Turkey, this article has explored what collective spirituality and Turkish Islamic business ethics entail and how they shape organizational values using diverse stakeholder perspectives. The study has revealed six emergent discourses around collective spirituality and Islamic business ethics: Flying with both wings; striving to transcend egos; being devoted to each other; treating people as whole persons; upholding an ethics of compassion; and leaving a legacy for future generations. These discourses are organized around three themes of collective spirituality, respectively: Transcendence, connectedness, and virtuousness

Genome-wide Identifcation and Characterization of SPL Transcription Factor Family and Their Evolution and Expression Profiling Analysis in Cotton

Abstract Plant specific transcription factors, SQUAMOSA promoter-binding protein-like (SPL), are involved in many biological processes. However, no systematical study has been reported in cotton. In this study, a total of 177 SPL genes were identified, including 29, 30, 59 and 59 SPLs in Gossypium arboreum, G. raimondii, G. barbadense, and G. hirsutum, respectively. These SPL genes were classified into eight phylogenetical groups. The gene structure, conserved motif, and clustering were highly conserved within each orthologs. Two zinc finger-like structures (Cys3His and Cys2HisCys) and NLS segments were existed in all GrSPLs. Segmental duplications play important roles in SPL family expansion, with 20 genes involved in segmental duplications and 2 in tandem duplications, and ten ortholog pairs in syntenic regions between G. raimondii and A. thaliana. Several putative cis-elements, involved in light, stresses and phytohormones response, were found in the promoter regions of GhSPLs, suggesting that plant responses to those environmental changes may be induced through targeting SPL transcription factors. RNA-seq analysis shows that SPL genes were differentially expressed in cotton; some were highly expressed during fiber initiation and early development. Comparing with other plants, SPL genes show subfunctionalization, lost and/or gain functions in cotton during long-term domestication and evolution

Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients (PROBESE): study protocol for a randomized controlled trial

Background: Postoperative pulmonary complications (PPCs) increase the morbidity and mortality of surgery in obese patients. High levels of positive end-expiratory pressure (PEEP) with lung recruitment maneuvers may improve intraoperative respiratory function, but they can also compromise hemodynamics, and the effects on PPCs are uncertain. We hypothesized that intraoperative mechanical ventilation using high PEEP with periodic recruitment maneuvers, as compared with low PEEP without recruitment maneuvers, prevents PPCs in obese patients. Methods/design The PRotective Ventilation with Higher versus Lower PEEP during General Anesthesia for Surgery in OBESE Patients (PROBESE) study is a multicenter, two-arm, international randomized controlled trial. In total, 2013 obese patients with body mass index ≥35 kg/m2 scheduled for at least 2 h of surgery under general anesthesia and at intermediate to high risk for PPCs will be included. Patients are ventilated intraoperatively with a low tidal volume of 7 ml/kg (predicted body weight) and randomly assigned to PEEP of 12 cmH2O with lung recruitment maneuvers (high PEEP) or PEEP of 4 cmH2O without recruitment maneuvers (low PEEP). The occurrence of PPCs will be recorded as collapsed composite of single adverse pulmonary events and represents the primary endpoint. Discussion To our knowledge, the PROBESE trial is the first multicenter, international randomized controlled trial to compare the effects of two different levels of intraoperative PEEP during protective low tidal volume ventilation on PPCs in obese patients. The results of the PROBESE trial will support anesthesiologists in their decision to choose a certain PEEP level during general anesthesia for surgery in obese patients in an attempt to prevent PPCs. Trial registration ClinicalTrials.gov identifier: NCT02148692. Registered on 23 May 2014; last updated 7 June 2016. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-1929-0) contains supplementary material, which is available to authorized users

Trapping center parameters of TlGaSe2 layered crystals

Thermally stimulated current measurements are carried out on as-grown TlGaSe2 layered single crystals in the temperature range of 90-220 K with various heating rates. Experimental evidence is found for the presence of two trapping centers with activation energy 98 and 130 meV. The retrapping process is negligible for these levels, as confirmed by good agreement between the experimental results and theoretical predictions of the model that assumes slow retrapping. The calculation yielded 2.3 x 10(-24) and 1.8 x 10(-24) cm(2) for the capture cross section and 1.4 x 10(14) and 3.8 x 10(14) cm(-3) for the concentration of the traps studied

Some properties of traditional Circassian cheese produced in Turkey

In this study, the basic composition and microbiological properties of traditional Circassian Cheese, produced with different methods (A: fresh, B: sun dried and C: dried in stoves) were investigated. While fresh cheeses had lower total solids, fat, protein, Water Soluble Nitrogen (WSN), salt and titratable acidity, the pH values were found to be close each other. Different results were found according to total mesophilic bacteria and yeast-mould counts. © 2006 Academic Journals

Magnetic, dielectric and microwave properties of M-Ti substituted barium hexaferrites (M=Mn2+, Co2+, Cu2+, Ni2+, Zn2+)

Several divalent cations together with tetravalent Ti4+ ion were replaced by two trivalent Fe3+ ions of barium hexaferrite in the form of BaFe10M2+Ti4+O19. Samples were prepared by using solid state reaction route and 1 wt% B2O3 was added to inhibit the crystal growth at lower temperatures. Magnetic, dielectric and microwave properties of samples were investigated by X-ray crystallography, scanning electron microscopy, magnetization and near field microwave measurements. Magnetization measurements revealed that saturation magnetization of the cation substituted samples is less than that of the pure barium hexaferrite. Except Co2+ substituted barium hexaferrite, coercivities of the samples are nearly 1 kOe. While measurement of dielectric constants of Zn2+, Mn2+, Co2+ and Cu2+ substituted samples yields a significant enhancement ( approximate to 10-10(2) times) with respect to Ni2+ substituted barium hexaferrite in permittivity through local polarization of Fe3+ electronic charges activated with nearby divalent ions. It is suggested that Zn2+ and Mn2+ substitution acts to reduce the electron hopping probability between Fe2+ and Fe3+. All samples have approximately the same microwave absorption properties in such a way that minimum reflection loss (RL) of -10 dB occurs at 15 GHz. Meanwhile, Zn2+ and Mn2+ substituted samples have quite wide absorption bandwidths of 4 GHz at - 10 dB. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved