bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of the role of polymorphic variants G919A and A2039G of the follicle stimulating hormone receptor gene FSHR in the genesis of male infertility
Authors: Tyrkus M. Y. 
Published: October 2024

Aim. To determine the distribution of genotypes of polymorphic variants G919A and A2039G of the gene FSHR (follicle-stimulating hormone receptor) among men with azoospermia. Methods. DNA from peripheral blood leukocytes was isolated and purification using a modified salting out method. Extracted DNA was amplified by Polymerase chain reaction (PCR). The PCR products were subsequently digested with the restriction enzyme for identify polymorphic variants of the follicle-stimulating hormone receptor gene FSHR. Electrophoresis of PCR products was performed in a 2 % agarose gel. Results. Given that idiopathic infertility is overwhelmingly caused by genetic factors, it seemed necessary to conduct a set of cytological and molecular genetic studies in a group of men with azoospermia. The genetic component was verified in 28 men with azoospermia, which is 40 % of all subjects. Molecular genetic studies were performed and the distribution of genotypes of polymorphic variants A919G and A2039G of the FSHR gene among men with azoospermia was determined. Conclusions. A slightly higher frequency of homozygous genotypes GG of polymorphic variants A919G and A2039G of the follicle stimulating hormone receptor gene FSHR was found among men with azoospermia compared to the group of fertile men.
Le journal intime comme espace d’un ratage revendiqué. Le mausolée des amants d’Hervé Guibert
Authors: Godin Louis-Daniel 
Published: October 2024

Si l’on s’appuie sur les dires d’Hervé Guibert, son oeuvre répond à ses propres voeux lorsque l’écriture intime y est privilégiée, elle « rate » lorsqu’elle s’éloigne du « je » autobiographique. Certaines de ses oeuvres archivées et non publiées sont ainsi, par lui, considérées comme ratées. L’enjeu du ratage est aussi présent dans son journal intime, Le mausolée des amants (2001), qui a la particularité d’avoir été écrit dans la perspective d’une publication posthume, ce qui offre à Guibert le loisir d’échapper, de son vivant, aux effets de son discours, tout en explorant son identité en relation avec un interlocuteur imaginé. Ainsi le motif du ratage permet d’analyser l’éthos intime guibertien. C’est à cette démonstration que s’attelle cet article en analysant Le mausolée des amants à la lumière de la notion d’éthos, ici décentrée et mise en rapport avec la théorie psychanalytique (du désir, surtout), envisagée à partir d’une sensibilité queer à la question du ratage.
Teacher educators’ and pre-service teachers’ confidence toward the use of ICT in education
Authors: Vesisenaho Mikko , Kyllönen Mari , Kukkonen Jari , Valtonen Teemu , Häkkinen Päivi 
Published: October 2024

Todays’ teacher education needs to provide pre-service teachers with readiness to integrate ICT in education. Teacher educators are expected to serve as role models for pre-service teachers, providing them with examples and meaningful experiences of learning with ICT. The aim of this study is to provide an insight into teacher educators’ and pre-service teachers’ confidence toward using ICT in education. In this study, both groups assessed their Technological Pedagogical Knowledge (TPK). The aim was to study the possible differences between teacher educators’ and pre-service teachers’ TPK assessments, and based on their assessments, to provide insights into teacher educators’ readiness to act as role models for pre-service teachers. The participants of the study were 123 pre-service teachers and 83 teacher educators. The results indicate that the assessments of teacher educators were higher than pre-service teachers’ assessments at the sample level. The results also indicate that pre-service teachers and teacher educators can both be divided into two aligning sub-groups, with higher and lower assessments. However, the comparison of these sub-groups showed that the assessments of the pre-service teachers in the higher sub-group were higher than with the assessments of the teacher educators in the lower (modest) sub-group. This study provides evidence for variation among teacher educators and pre-service teachers in terms of their TPK. This implies a need for more tailored ways to develop TPK in teacher education.
HLA-B27 Frequency and its Association with Ankylosing Spondylitis in Indian Population: A Multi-City Analysis from a Single-Center Study
Authors: Sharma Vandana , Kumar Sanjay , Katara Rahul , Sharma Shivani , Kumar Vipin , Pandey Namrata , Singh Satish Kumar , Verma Shashikant , Kumar Sachin , Prasad Ranvijay 
Published: October 2024

The human leukocyte antigen HLA-B*27 is a Class 1 antigen of the major histocompatibility complex (MHC) with B locus and has been established in association with pathogenesis of Ankylosing Spondylitis (AS) since 1973. AS is a multifactorial disease which occurs due to interaction between genes, environment, mechanical stress, microbiota and infection. The ankylosing spondylitis is characterized by inflammation of spine, backpain, stiffness of lower back and hips, extrarticular organs such as eyes, and cardiovascular system. In severe cases this may cause the fusion of vertebrae. The current study highlights the mechanism involved in the pathogenesis of AS with a focus to investigate the frequency of HLA B*27 in suspected cases of AS. The patients were recruited from rheumatology clinics of India from age group of 13-69 years. Patients with suspected cases of AS who met the clinical criteria for AS were tested for HLA-B*27. One thousands and four patients were tested for HLA B*27 using RTPCR method. Out of 1004 subjects, 124 (12.35%) were positive for HLA-B*27. Among these, Male/Female ratio was 2.7. Majority of subjects were from North India. The current study highlights the HLA B27 positivity in association with pathogenesis of AS and indicates that HLA B27 serves as a rapid prognostic and diagnostic genetic marker for detection of AS.
Determination of Oil Content and Fatty Acid Composition of Tea Plants at Plantations in the Black Sea Region
Authors: Genc Murat , Seyis Fatih 
Published: October 2024

Aims: The aim of this study was to determine the fatty acid composition and oil content of C. sinensis seeds collected from different locations at the Northern Black Sea region.
Study Design: The study based on the collection of tea seed samples from different locations at the the Northern Black Sea Region in Türkiye and comparing their fatty acid composition and oil content of analyzed samples.
Place and Duration of Study: Recep Tayyip Erdogan University, Faculty of Agronomy, Field Crops Department, Rize, Türkiye, between 2022 and July 2023.
Methodology: A total of 54 samples were taken within the scope of determining oil content and fatty acid composition of Camellia sinensis seeds collected from different locations. The location were choosen from different cities concerning altitude. The number of samples taken from the province of Rize is 37, the number of samples taken from the province of Trabzon is 7, the number of samples taken from the province of Giresun is 5, and the number of samples taken from the province of Artvin is 5. Fatty Acid composition was analyzed using GC-MS and oil content with an automated oil extraction device.
Results: Oil ratio and fatty acid composition were determined in these samples. As stated in the literature, oleic acid, which is the criterion of vegetable oil quality, was found to be high in all samples. With Principal Component Analysis, the oil content and fatty acid composition data of the samples were used to reveal the differences in the samples. The obtained data will shed light on future studies.
Conclusion: Knowing the fatty acid composition of tea oils will enable production of oils according to their intended use. For this purpose, it will be possible to produce oils suitable for the purpose by growing the desired types in suitable regions. We have to consider, that seeds were obtained after leaf harvest of tea plants. We can assume that the seed yield will increase if the tea plants are grown only for seed production. With governmental support tea seed oil production will be an potential additional income for local farmers.
Observational insights into chlorophyll distributions of subtropical South Indian Ocean eddies
Authors: Dufois François , Hardman‐Mountford Nick J. , Fernandes Michelle , Wojtasiewicz Bozena , Shenoy Damodar , Slawinski Dirk , Gauns Mangesh , Greenwood Jim , Toresen Reidar 
Published: March 2017

AbstractThe South Indian Ocean subtropical gyre has been described as a unique environment where anticyclonic ocean eddies highlight enhanced surface chlorophyll in winter. The processes responsible for this chlorophyll increase in anticyclones have remained elusive, primarily because previous studies investigating this unusual behavior were mostly based on satellite data, which only views the ocean surface. Here we present in situ data from an oceanographic voyage focusing on the mesoscale variability of biogeochemical variables across the subtropical gyre. During this voyage an autonomous biogeochemical profiling float transected an anticyclonic eddy, recording its physical and biological state over a period of 6 weeks. We show that several processes might be responsible for the eddy/chlorophyll relationship, including horizontal advection of productive waters and deeper convective mixing in anticyclonic eddies. While a deep chlorophyll maximum is present in the subtropical Indian Ocean outside anticyclonic eddies, mixing reaches deeper in anticyclonic eddy cores, resulting in increased surface chlorophyll due to the stirring of the deep chlorophyll maximum and possibly resulting in new production from nitrate injection below the deep chlorophyll maximum.
New density estimates derived using accelerometers on board the CHAMP and GRACE satellites
Authors: Mehta Piyush M. , Walker Andrew C. , Sutton Eric K. , Godinez Humberto C. 
Published: March 2017

AbstractAtmospheric mass density estimates derived from accelerometers onboard satellites such as CHAllenging Minisatellite Payload (CHAMP) and Gravity Recovery and Climate Experiment (GRACE) are crucial in gaining insight into open science questions about the dynamic coupling between space weather events and the upper atmosphere. Recent advances in physics‐based satellite drag coefficient modeling allow derivation of new density data sets. This paper uses physics‐based satellite drag coefficient models for CHAMP and GRACE to derive new estimates for the neutral atmospheric density. Results show an average difference of 14–18% for CHAMP and 10–24% for GRACE between the new and existing data sets depending on the space weather conditions (i.e., solar and geomagnetic activity levels). The newly derived densities are also compared with existing models, and results are presented. These densities are expected to be useful to the wider scientific community for validating the development of physics‐based models and helping to answer open scientific questions regarding our understanding of upper atmosphere dynamics such as the sensitivity of temporal and global density variations to solar and geomagnetic forcing.
Asteroid impact effects and their immediate hazards for human populations
Authors: Rumpf Clemens M. , Lewis Hugh G. , Atkinson Peter M. 
Published: March 2017

AbstractA set of 50,000 artificial Earth impacting asteroids was used to obtain, for the first time, information about the dominance of individual impact effects such as wind blast, overpressure shock, thermal radiation, cratering, seismic shaking, ejecta deposition, and tsunami for the loss of human life during an impact event for impactor sizes between 15 and 400 m and how the dominance of impact effects changes over size. Information about the dominance of each impact effect can enable disaster managers to plan for the most relevant effects in the event of an asteroid impact. Furthermore, the analysis of average casualty numbers per impactor shows that there is a significant difference in expected loss for airburst and surface impacts and that the average impact over land is an order of magnitude more dangerous than one over water.
LIVVkit: An extensible, python‐based, land ice verification and validation toolkit for ice sheet models
Authors: Kennedy Joseph H. , Bennett Andrew R. , Evans Katherine J. , Price Stephen , Hoffman Matthew , Lipscomb William H. , Fyke Jeremy , Vargo Lauren , Boghozian Adrianna , Norman Matthew , Worley Patrick H. 
Published: March 2017

AbstractTo address the pressing need to better understand the behavior and complex interaction of ice sheets within the global Earth system, significant development of continental‐scale, dynamical ice sheet models is underway. Concurrent to the development of the Community Ice Sheet Model (CISM), the corresponding verification and validation (V&V) process is being coordinated through a new, robust, Python‐based extensible software package, the Land Ice Verification and Validation toolkit (LIVVkit). Incorporated into the typical ice sheet model development cycle, it provides robust and automated numerical verification, software verification, performance validation, and physical validation analyses on a variety of platforms, from personal laptops to the largest supercomputers. LIVVkit operates on sets of regression test and reference data sets, and provides comparisons for a suite of community prioritized tests, including configuration and parameter variations, bit‐for‐bit evaluation, and plots of model variables to indicate where differences occur. LIVVkit also provides an easily extensible framework to incorporate and analyze results of new intercomparison projects, new observation data, and new computing platforms. LIVVkit is designed for quick adaptation to additional ice sheet models via abstraction of model specific code, functions, and configurations into an ice sheet model description bundle outside the main LIVVkit structure. Ultimately, through shareable and accessible analysis output, LIVVkit is intended to help developers build confidence in their models and enhance the credibility of ice sheet models overall.
Guest‐induced Assembly of Bis(thiosemicarbazonato) Zinc(II) Coordination Nanotubes
Authors: Paterson Brett M. , White Keith F. , White Jonathan M. , Abrahams Brendan F. , Donnelly Paul S. 
Published: March 2017

AbstractA ZnII complex of the dianionic tetradentate ligand formed by deprotonation of glyoxal‐bis(4‐phenyl‐3‐thiosemicarbazone) (H2gtsp) is a [3+3] trinuclear triangular prism. Recrystallization of this complex in the presence of either CO2, CS2, or CH3CN leads to the formation of [4+4] open‐ended charge‐neutral tetranuclear coordination nanotubes, approximately 2 nm in length and with internal dimensions large enough to accommodate linear guest molecules, which serve to template their formation. Upon removal of the templating molecules the nanotubes demonstrated reversible sorption of CO2 with an isosteric enthalpy of sorption of 28 kJ mol−1 at low loading.
Influence of foaming and carbon nanotubes on sound transmission loss of wood fiber‐low density polyethylene composites
Authors: Neyciyani Behrouz , Kazemi Najafi Saeed , Ghasemi Ismaeel 
Published: March 2017

ABSTRACTThe aim of this study was to investigate the effect of carbon nanotubes (CNTs) and foaming on sound transmission loss (STL) of wood fiber‐low density polyethylene composite. For this purpose, low density polyethylene, wood fiber, foaming agent, coupling agent and modified CNTs were mixed in an internal mixer to produce test samples. The standard circular samples were produced by using compression molding method in a hot press machine. Sound transmission loss was measured by an impedance tube. Results showed that the use of CNTs improved the foam morphology in the composites. Foaming and the use of CNTs improve the STL of composites (especially at medium and higher frequencies) and the highest STL was obtained for wood fiber/LDPE foamed composites containing 1% CNT. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45096.
Photoelectrochemical Hydrogen Peroxide Production from Water on a WO3/BiVO4 Photoanode and from O2 on an Au Cathode Without External Bias
Authors: Fuku Kojiro , Miyase Yuta , Miseki Yugo , Funaki Takashi , Gunji Takahiro , Sayama Kazuhiro 
Published: March 2017

AbstractThe photoelectrochemical production and degradation properties of hydrogen peroxide (H2O2) were investigated on a WO3/BiVO4 photoanode in an aqueous electrolyte of hydrogen carbonate (HCO3−). High concentrations of HCO3− species rather than CO32− species inhibited the oxidative degradation of H2O2 on the WO3/BiVO4 photoanode, resulting in effective oxidative H2O2 generation and accumulation from water (H2O). Moreover, the Au cathode facilitated two‐electron reduction of oxygen (O2), resulting in reductive H2O2 production with high current efficiency. Combining the WO3/BiVO4 photoanode with a HCO3− electrolyte and an Au cathode also produced a clean and promising design for a photoelectrode system specializing in H2O2 production (ηanode(H2O2)≈50 %, ηcathode(H2O2)≈90 %) even without applied voltage between the photoanode and cathode under simulated solar light through a two‐photon process; this achieved effective H2O2 production when using an Au‐supported porous BiVO4 photocatalyst sheet.
An Excel‐based program to teach students quick ergonomic risk assessment techniques with an application to an assembly system
Authors: Baykasoğlu Adil , Demirkol Akyol Sebnem , Demirkan Batuhan 
Published: March 2017

ABSTRACTGovernments force companies to stabilize ergonomic risk levels of the manufacturing environment and keep it below an acceptable risk level in order to prevent aftermaths. As a result, companies need more manufacturing engineers who are aware of ergonomics risk analysis. Thus, undergraduate students in the 3rd year in Industrial Engineering at Dokuz Eylül University are invited to take part in a real‐life experience. This paper introduces an Excel‐based program which is called Quick Ergonomic Assessment Techniques (QEAT); in order to support teaching students ergonomic risk assessment techniques; facilitate understanding characteristics of different techniques, and enable to compare the results of them. Three of the well‐known ergonomic risk assessment techniques are coded in QEAT and applied on an electronics company which manufactures TV. The proposed QEAT procedure is easy to apply in various manufacturing environments and is suitable to be implemented in undergraduate engineering laboratories in order to support and encourage ergonomics study. The results show that by using the combination of three techniques in QEAT, an ergonomic risk assessment which covers most of the body areas could be presented and manufacturing environment could be reanalyzed easily if it is needed due to the changes in production processes. © 2017 Wiley Periodicals, Inc. Comput Appl Eng Educ 25:489–507, 2017; View this article online at wileyonlinelibrary.com/journal/cae; DOI 10.1002/cae.21816
Reflexive research with mothers and children victims of domestic violence
Authors: Gabriel Lynne , James Hazel , Cronin‐Davis Jane , Tizro Zahra , Beetham Tanya , Hullock Ashley , Raynar Alex 
Published: March 2017

AbstractAimThis methodological paper outlines a participatory and reflexive research approach in the context of in‐depth, small‐scale and preliminary qualitative research conversations with a vulnerable population.Developing a participatory and reflexive methodologyThe project involved developing in‐depth research conversations with three mothers and their children who had experienced domestic violence. Underpinned by poststructural feminism and relational ethics, a participatory approach to facilitate informal, nondefensive, participant‐centred conversational spaces for the women and children was developed. Creating both the relational medium and the dialogical processes through which to engage with the women and children prompted multiple and complex challenges for the research team. Some members of the research team had prior experience of domestic violence, generating implications for ethical and reflexive research practice.Implications for research practiceThe study highlights the complexities and challenges of developing a participatory approach with vulnerable populations including the quandaries faced, the importance of critical reflexivity during in‐depth qualitative inquiry and the value of utilising a project steering group to support research governance. All members of the research team were emotionally impacted by the research work and the relational engagement with participants. A collaborative, peer‐supervisory approach to support the researchers, the research processes – and, ultimately, the participants – was essential. Two case vignettes are included to exemplify researcher experiences.
Hydrogenation of Carbon Dioxide over K‐Promoted FeCo Bimetallic Catalysts Prepared from Mixed Metal Oxalates
Authors: Gnanamani Muthu Kumaran , Hamdeh Hussein H. , Jacobs Gary , Shafer Wilson D. , Hopps Shelley D. , Thomas Gerald A. , Davis Burtron H. 
Published: March 2017

AbstractThe hydrogenation of carbon dioxide over K‐promoted FeCo bimetallic catalysts prepared by sequential oxalate decomposition and carburization of FeCo with CO was studied in a fixed‐bed reactor at 240 °C and 1.2 MPa. The initial CO2 conversion was found to be dependent on K loading, whereas both unpromoted and K‐promoted FeCo catalysts (except 90Fe10Co3.0K) exhibited similar levels of CO2 conversion after a few hours of time on stream. A decarburization study on freshly activated and used FeCo suggests that potassium increases the stability of iron carbides and graphitic carbon under a reducing atmosphere. Also, K addition tends to decrease the hydrogenation function of FeCo bimetallic catalysts and, thus, controls product selectivity. Under similar CO2 conversions, potassium enhanced acetic acid formation while suppressing ethanol production, which indicates that a common intermediate might be responsible for the changes observed with C2 oxygenates.
Self‐Supported NiS Nanoparticle‐Coupled Ni2P Nanoflake Array Architecture: An Advanced Catalyst for Electrochemical Hydrogen Evolution
Authors: Sun Jianmin , Chen Yajie , Ren Zhiyu , Fu Huiying , Xiao Yuting , Wang Jinge , Tian Guohui 
Published: March 2017

AbstractThe fabrication of heterostructured semiconductors is an effective strategy for improving electrochemical hydrogen evolution performance. In this work, we designed and prepared a novel self‐supported NiS nanoparticle‐coupled Ni2P nanoflake array architecture. Vertically oriented Ni(OH)2 nanoflake arrays were first grown on carbon fiber paper by using a hydrothermal seed growth process. Then, the following sulfuration and phosphatization processes resulted in the formation of NiS nanoparticle‐decorated Ni2P nanoflake arrays supported on carbon fiber paper (CP/Ni2P/NiS). The obtained CP/Ni2P/NiS heterostructured nanoflake arrays, as novel 3D hydrogen evolution cathodes, possess superhydrophilic surfaces, abundant coupling interfaces, and sufficient surface active sites; they can also facilitate proton accessibility, rapid charge transport, and timely gas detachment. As expected, these positive synergistic effects endowed the optimal CP/Ni2P/NiS heterostructured nanoflake array electrode with a low onset overpotential of 58 mV and a small Tafel slope of 68 mV dec−1. A low overpotential of −103 mV is needed to afford a catalytic current density of 10 mA cm−2. The current density of the heterostructure hybrid electrode can keep its catalytic current density for at least 5000 cycles reaction without obvious loss of catalytic activity, indicating its good durability.