bluuebunny/crossref_metadata_2025_split huggingface dataset:
Students' Perceptions of the Javanese English Accents through Extensive Listening Video
Authors: Syahri Indawan , Sulaiman Masagus , Azhari Abi Musa 
Published: June 2024

This research aimed at figuring out the students’ perceptions on the Javanese English accents through extensive listening video and also identifying the challenges occurred within the process of listening to the Javanese English accents both in extensive listening and interactive speaking classes. This research employed a qualitative research design in line with a case study. The participants of this research were the fourth semester students of English Department of STKIP PGRI Lubuk Linggau who took extensive listening and interactive speaking classes. To collect the data, the researchers used a documentation technique in term of giving questionnaires. To analyze the data, the researchers used a percentage analysis. The results showed that most of students had positive perceptions on the Javanese English accent. They perceived that understanding various kinds of English accents could give them many advantages in their learning process and the challenges and difficulties that students identified in listening to the Javanese English accent did not make all of them have a negative perception. In conclusion, understanding various kinds of English accents could give them many advantages in learning English.
PENYULUHAN TIP MENDAFTAR KULIAH DI PERGURUAN TINGGI COUNSELING TIPS ON APPLYING TO COLLEGE
Authors: Hermawan* Ade , Jamili1 Muhammad , Bakhtiar  
Published: June 2024

Abstrak
Sekolah Menengah Atas Negeri 1 Martapura adalah salah satu sekolah lanjutan atas yang ada di kota Martapura Kabupaten Banjar. Sekitar 95 % siswanya masih belum mengetahui mengenai cara melakukan pendaftaran kuliah di perguruan tinggi. Atas dasar kondisi yang demikianlah yang membuat penulis tertarik untuk melakukan pengabdian masyarakat dalam bentuk kegiatan Penyuluhan mengenai Tip Mendaftar Kuliah di Perguruan Tinggi. Oleh karena itu tujuan kegiatan pengabdian masyarakat ini adalah untuk Memberikan bekal pengetahuan dan pemahaman kepada siswa-siswi calon lulusan Sekolah Lanjutan Atas (SLTA) mengenai Tip mendaftar kuliah di perguruan tinggi agar meraka dapat diterima menjadi mahasiswa pada perguruan tinggi yang dipilih. Metode yang dipergunakan dalam pelaksanaan kegiatan pengabdian masyarakat adalah survei, dokumentasi, dan ceramah. Kegiatan penyuluhan berjalan dengan baik dan lancar dan peserta memahami mengenai cara mendaftar kuliah di perguruan tinggi.
Kata Kunci : Tip, Mendaftar, Perguruan Tinggi.

Abstract
Martapura 1 State High School is one of the high schools in the city of Martapura, Banjar Regency. Around 95% of students still do not know how to register for college. Based on these conditions, the author is interested in carrying out community service in the form of outreach activities regarding Tips for Applying to College. Therefore, the aim of this community service activity is to provide knowledge and understanding to prospective senior high school (SLTA) graduate students regarding tips for registering for college so that they can be accepted as students at the chosen college. The methods used in implementing community service activities are surveys, documentation and lectures. The counseling activities went well and smoothly and participants understood how to register for college.
Keywords: Tips, Applying, College.
Lumbar extension peak-torque, muscle endurance and motor imagery in junior-elite basketballers with and without a history of low back pain: a pilot study
Authors: Glazebrook Tim , Cooke Jennifer , Waddington Gordon , Wallwork Sarah B. 
Published: June 2024

Objectives
Low back pain (LBP) is common in elite athletes. Several peripheral and central factors have been identified to be altered in non-athletic LBP populations, however whether these alterations also exist in elite athletes with LBP is unknown. The aim of this study was to determine whether elite basketballers with a history of persistent LBP perform worse than those without LBP at a lumbar muscle endurance task, a lumbar extension peak-torque task, and a lumbar motor imagery task.

Method
An observational pilot study. Twenty junior elite-level male basketballers with (n = 11) and without (n = 9) a history of persistent LBP were recruited. Athletes completed a lumbar extensor muscle endurance (Biering-Sorensen) task, two lumbar extensor peak-torque (modified Biering-Sorensen) tasks and two motor imagery (left/right lumbar and hand judgement) tasks across two sessions (48 hours apart). Performance in these tasks were compared between the groups with and without a history of LBP.

Results
Young athletes with a history of LBP had reduced lumbar extensor muscle endurance (p < 0.001), reduced lumbar extension peak-torque (p < 0.001), and were less accurate at the left/right lumbar judgement task (p = 0.02) but no less accurate at a left/right hand judgement task (p = 0.59), than athletes without a history of LBP. Response times for both left/right judgement tasks did not differ between groups (lumbar p = 0.24; hand p = 0.58).

Conclusions
Junior elite male basketballers with a history of LBP demonstrate reduced lumbar extensor muscle endurance and lumbar extension peak-torque and are less accurate at a left/right lumbar rotation judgement task, than those without LBP.
Extraction, Purification, and Identification of Yersiniabactin, the Siderophore of Yersinia pestis
Authors: Miller M. Clarke , DeMoll Edward 
Published: November 2011

AbstractThis unit describes in detail the extraction, purification, and identification of Yersiniabactin the siderophore of Yersinia pestis. Iron is essential for bacterial growth. Although relatively abundant, access to iron is limited in nature by low solubility. This problem is exacerbated for pathogenic bacteria, which must also defeat the host organism's innate defenses, including mechanisms to sequester iron. One solution to these problems is production of water soluble, small molecules with high affinities for iron called siderophores. This protocol has been fine tuned for Yersiniabactin purification but may be easily modified for use in isolating other siderophores or similar molecules. Curr. Protoc. Microbiol. 23:5B.3.1‐5B.3.22. © 2011 by John Wiley & Sons, Inc.
Vibriocidal Assays to Determine the Antibody Titer of Patient Sera Samples
Authors: Son Mike S. , Taylor Ronald K. 
Published: November 2011

AbstractThe vibriocidal titer assay can be used to detect antibodies against Vibrio cholerae in serum samples, serving as an indicator of prior infection and potential protection against cholera. The assay can be utilized in research and clinical settings to test the effectiveness of vaccines, and also in epidemiological studies relevant to cholera transmission and surveillance. This unit outlines the steps involved in conducting an easily interpreted colorimetric vibriocidal titer assay with a relatively short turnaround time for results of around 8 hr, with final result observations in 24 hr. The assay can also be easily scaled up or down to accommodate as many or as few serum samples available and is not V. cholerae strain specific. Curr. Protoc. Microbiol. 23:6A.3.1‐6A.3.9. © 2011 by John Wiley & Sons, Inc.
Combined partial trisomy 11q and partial monosomy 10p in a 19‐year‐old female patient: Phenotypic and genotypic findings
Authors: Hagen Anja , Bigl Arndt , Wand Dorothea , Klopocki Eva , Heller Raoul , Siekmeyer Manuela , Siekmeyer Werner , Kiess Wieland , Merkenschlager Andreas 
Published: November 2011

AbstractConstitutional partial trisomy 11q in man mostly occurs in combination with partial trisomy 22 due to a balanced parental translocation t(11;22). Occasionally a chromosome other than 22 is involved in the parental translocation with chromosome 11, resulting in partial monosomy for the other participating chromosome. We report of a patient with partial trisomy 11q and partial monosomy 10p [46,XX,der(10)t(10;11)(p15;q22)] due to a paternal balanced translocation [46,XY,t(10;11)(p15;q22)]. Array CGH showed heterozygosity for a deletion of ∼3.46 Mb at 10p15.3p15.2 and gain of ∼32.21 Mb at 11q22.2q25. The patient, a 19‐year‐old woman, has a multiple congenital anomaly syndrome with severe developmental and growth delay, muscular hypotonia, iris coloboma, abnormal external ears, widely spaced nipples, atrial septum defect, clubfoot, and arthrogryposis multiplex congenita. Despite multiple health problems and numerous hospitalizations due to massive seizures, pulmonary insufficiency and recurrent infections the patient reached adulthood. The clinical features in our patient are compared to other cases reported in the literature of either partial monosomy 10p or partial trisomy 11q. To the best of our knowledge, this is the first report of the combination of partial trisomy 11q and partial monosomy 10p. Comparing the molecular karyotype and the phenotype of our patient to other patients, the clinical features of our patient are more likely due to partial trisomy 11q than to partial monosomy 10p. © 2011 Wiley Periodicals, Inc.
Mosaic marker chromosome 16 resulting in 16q11.2–q12.1 gain in a child with intellectual disability, microcephaly, and cerebellar cortical dysplasia
Authors: Zerem Ayelet , Vinkler Chana , Michelson Marina , Leshinsky‐Silver Esther , Lerman‐Sagie Tally , Lev Dorit 
Published: November 2011

AbstractProximal duplications of the long arm of chromosome 16 are rare and only a few patients have been reported. Clinically, the patients do not have a distinctive syndromic appearance; however they all show some degree of intellectual disability and most have severely delayed speech development. We report on a child presenting with mild‐to‐moderate intellectual disability, microcephaly, language dyspraxia, and mild dysmorphisms who was found to have a mosaic gain of chromosome 16q (16q11.2–16q12.1). Magnetic resonance imaging done at the age of 4 years demonstrated cerebellar cortical dysplasia involving the vermis and hemispheres. This is the first report of cerebellar anomalies in a patient with partial trisomy 16q. The genes ZNF423 and CBLN1 found in the duplicated region play a role in the development of the cerebellum and may be responsible for the cerebellar cortical dysplasia. © 2011 Wiley Periodicals, Inc.
New experimental device to test the dynamic behavior of fiber assemblies and fibrous composite structures with a focus on larger industrial‐scale‐like samples
Authors: Rebouillat S. , Liksonov D. , Courgey A. 
Published: November 2011

AbstractThis article focuses on the development of an experimental measurement system intended for dynamic mechanical analysis (DMA) of fiber structures. First, a short review of DMA testing procedures is given, followed by an analysis of particularities of DMA application to fibers and rope assemblies. The necessity of developing a dedicated device for fiber assembly and rope applications is pointed out, as the commercial DMA testing devices available are intended for shorter specimens. Thus, the article insists on the underlying necessity to come up with a measurement device for much longer fiber specimens and a testing procedure therewith. Then the article presents the main concepts of the new device and its operation. Three different operating modes are presented with explanations of their functioning, their particularities, and the interest for rope testing. After that, the implementation of the testing device prototype is presented, describing the mechanical set up, electromagnetic elements, power and acquisition circuitry and software. At last, preliminary experimental results are provided demonstrating the feasibility of this solution and indications concerning the potential future developments of this kind of rope testing systems are given. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
A supported titanium postmetallocene catalyst: Effect of selected conditions on ethylene polymerization
Authors: Pietruszka Anna , Białek Marzena , Czaja Krystyna 
Published: November 2011

AbstractEthylene polymerization with a titanium complex [N,N‐ethylenebis(3‐methoxysalicylideneiminato)titanium dichloride] immobilized on the magnesium support with the formula MgCl2(THF)0.32(Et2AlCl)0.36 was studied. In particular, the effects of polymerization temperature, monomer pressure, and polymerization time on the activity of the catalyst and on the polyethylene properties (molecular weight and its distribution, melting point, crystallinity, and bulk density) were evaluated. The findings of investigations prove that the studied supported titanium catalyst is highly active in ethylene polymerization, and its activity increases with increasing temperature and monomer pressure. Moreover, stability of the catalytic systems is dependent on the activator type used. Me3Al, when employed as an activator, makes the catalytic system undergo no deactivation in practice. The catalyst coupled with MAO turned out less stable. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
NR/SBR/organoclay nanocomposites: Effects of molecular interactions upon the clay microstructure and mechano‐dynamic properties
Authors: Tavakoli Mitra , Katbab Ali Asghar , Nazockdast Hossein 
Published: November 2011

AbstractNanocomposites based on (70/30) blends of natural rubber (NR), styrene‐butadiene rubber (SBR), and organoclay (OC) have been prepared successfully via melt‐mixing process. Effects of the extent of polymers/clay interactions upon the developed microstructure, fatigue life, and dynamic energy loss by the nanocomposites have been investigated. Maleated EPDM (EPDM‐g‐MAH) and epoxidized NR (ENR50) were employed as compatibilizer. Nanocomposites were characterized by means of X‐ray diffractometer (XRD), transmission electron microscope (TEM), scanning electron microscope, atomic force microscopy, root mean square, and dynamic mechanical thermal analysis. EPDM‐g‐MAH showed more potential in enhancing dispersion of the clay nanolayers and their interaction with rubber phases. More potential for separating and dispersing the clay nanoplatelets with better interface enhancement was exhibited by EPDM‐g‐MAH as compatibilizer. This was consistent with higher resistance towards large strain cyclic deformations along with more heat build‐up characteristics showed by EPDM‐g‐MAH based nanocomposites especially at compatibilizer/organoclay ratio of 3. Pronounced non‐terminal behavior within low frequency region was also observed for melt storage modulus of this nanocomposite, indicating higher extent of intercalation/exfoliation microstructure with reinforced interfaces than the nanocomposite generated by ENR50. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Surface photografting initiated by benzophenone in water and mixed solvents containing water and ethanol
Authors: Li Guangwu , He Guanyang , Zheng Yunan , Wang Xiaoxiao , Wang Huiliang 
Published: November 2011

AbstractPhotografting reactions are usually carried out in organic solvents due to the water insoluble nature of photoinitiators such as benzophenone (BP). This work reports the effect of water and mixed solvents containing water and ethanol on the surface photografting of methacrylic acid (MAA) onto polyethylene initiated by BP. The percent grafting increased with the increase of water volume ratio in the mixed solvent, and BP showed the highest photoinitiation efficiency when dissolved in pure water solvent. Effects of BP concentration, monomer concentration, and monomer type on photografting were studied. The percent grafting showed the maximum at a lower BP concentration (0.20 mol/mol %) in pure water solvent than that (0.60 mol/mol %) in the mixed solvent with 90 v/v % water. The percent grafting first increased with the increase of monomer concentration till 3 mol L−1 and then decreased. Acrylic acid (AA) could also be photografted onto polyethylene by BP in the mixed solvents. UV–visible spectroscopic examinations revealed that the λmax of π–π* transitions of BP red shifted as the increase of the water volume ratio, i.e., the polarity of the solvent. The excitation of BP in solvents with a higher polarity under UV irradiation requires less energy, so the photografting initiated by BP is easier to occur. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Synthesis of carbon nanostructures from residual solids waste tires
Authors: Mis‐Fernández Ricardo , Rios‐Soberanis Carlos R. , Arenas‐Alatorre Jesús , Azamar‐Barrios José A. 
Published: November 2011

AbstractThis article presents the results of the synthesis and morphological characterization of carbon nanostructures obtained from the decomposition of residual solid from waste tires (RSWT) in quartz tubes under reduced pressure (1.33 Pa) at 900°C for 15 min. The synthesis led to the formation of two phases, a fragmented solid black powder composed of multi‐walled carbon nanotubes (MWCNTs), onion‐type fullerenes, and spheres, and a very bright metallic dark film. Analysis by microscopy (SEM and TEM) showed that the MWCNTs had an average diameter of approximately 25 nm and a length greater than 100 nm while the diameter of the onion‐type fullerenes was found to be 8 nm. The nanospheres showed different diameters ranging from 500 nm to 1.5 μm, and some had a metallic core surrounded by layers of carbon. The infrared spectra of the nanotubes exhibited absorption bands at 1558 and 1458 cm−1, corresponding to CC and CC bonds, and signals at 3438 and 1080 cm−1 related to the OH and CO groups from oxidized graphite as it was identified in the dark film. The Raman spectra of the carbon nanostructures present D and G‐bands at 1331 and 1597 cm−1, respectively. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Synthesis and adsorption properties, toward some heavy metal ions, of a new polystyrene‐based terpyridine polymer
Authors: Saadeh Haythem A. , Shairah Eman A. Abu , Charef Noureddine , Mubarak Mohammad S. 
Published: November 2011

AbstractA novel polymeric ligand having 2,2′:6′,2″‐terpyridine as pendant group was prepared through a Williamson type etherification approach for the reaction between 4′‐hydroxy‐2,2′: 6′,2″‐terpyridine and the commercially available 4‐chloromethyl polystyrene. The chelating properties of the new polymer toward the divalent metal ions (Cu2+, Zn2+, Ni2+, and Pb2+) in aqueous solutions was studied by a batch equilibration technique as a function of contact time, pH, mass of resin, and concentration of metal ions. The amount of metal‐ion uptake of the polymer was determined by using atomic absorption spectrometry. Results of the study revealed that the resin exhibited higher capacities and a more pronounced adsorption toward Pb2+ and that the metal‐ion uptake follows the order: Pb2+ > Cu2+ > Zn2+ > Ni2+. The adsorption and binding capacity of the resin toward the various metal ions investigated are discussed. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Preparation and characterization of polyvinyl borate/polyvinyl alcohol (PVB/PVA) blend nanofibers
Authors: Koysuren Ozcan , Karaman Mustafa , Dinc Havva 
Published: November 2011

AbstractIn this study, it was aimed to prepare polyvinyl borate/polyvinyl alcohol blend nanofibers by electrospinning process. Polyvinyl borate was synthesized by the condensation reaction of polyvinyl alcohol and boric acid. Polyvinyl borate itself was not suitable for electrospinning process. To improve fiber formation capability, polyvinyl borate was blended with polyvinyl alcohol before electrospinning process. A series of nanofibers with various polyvinyl borate concentrations in polyvinyl alcohol were prepared. Homogeneous and highly porous mat containing 100–250 nm diameter nanofibers were obtained by electrospinning process. According to the FTIR results, boron atoms were found to be integrated into the polymer network. There is not any significant effect of polyvinyl borate content on fiber morphologies according to SEM images. The blend composition with the highest polyvinyl borate content was found to be suitable for thermally stable nanofiber formation according to the TGA results. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Iodination of stable aromatic diazonium salt using crosslinked poly (4‐vinylpyridine)‐supported iodide
Authors: Karimi Zarchi Mohammad Ali , Ebrahimi Nahid 
Published: November 2011

AbstractAn efficient and simple method for the iodination of stable arenediazonium salts has been developed by using a polymer‐supported iodide. The arenediazonium chlorides, Ar‐NCl−, were obtained by the reaction between primary aryl amine and sodium nitrite in the presence of concentrated hydrochloric acid (HCl) at low temperature (0–5°C). By ion exchange reaction between Ar‐NCl− with NaBF4, the stable arenediazonium tetrafluoroborates, Ar‐NBF, were prepared. Ar‐NBF, were then converted to aryl iodides by crosslinked poly (4‐vinylpyridine)‐supported iodide, [P4‐VP]I, in acetonitrile at room temperature. The spent polymeric reagent was regenerated and reused for several times without losing its activity. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Effects of neutralization on the structure and properties of an ionomer
Authors: Gao Yan , Choudhury Namita Roy , Dutta Naba K. 
Published: November 2011

AbstractThe structure, morphology, and properties of an ionomer, poly(ethylene‐acrylic‐acid) neutralized by zinc salts (PI) depend on the free carboxylic acid content. In this work, metal acetates (Na, Zn, and Al acetates) were used to control the neutralization levels. A wide range of techniques were used, such as spectroscopic Fourier transform infrared spectroscopy (FTIR), thermal [thermogravimetric analysis, modulated differential scanning calorimetry (MDSC), and dynamic mechanical analysis (DMA)], mechanical (tensile measurement), and small angle neutron scattering (SANS). The melt rheological properties of the samples were also examined. The results show that metal acetate neutralizes free acrylic acid in the ionomer, which has the primary role in controlling ionic association. The number of ionic groups in ionic domains and multiplets in the matrix is dependent on the neutralization level. Metal valence determines the ionic domain or multiplet structure (FTIR), further properties of PI. Dynamic mechanical properties, the ionic transition behaviour, and the mechanical properties are improved compared with PI using monovalent cation (Na+), but decreased using trivalent cation (Al3+) or shows less significant changes due to steric effects. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Effect of nanoclay and ZnO on the physical and chemical properties of wood polymer nanocomposite
Authors: Deka Biplab K. , Maji Tarun K. 
Published: November 2011

AbstractWood polymer composite (WPC) was prepared by using solution blended high density polyethylene, low density polyethylene, polypropylene, and poly(vinyl chloride) with Phragmites karka wood flour and polyethylene‐co‐glycidyl methacrylate (PE‐co‐GMA). The effect of addition of nanoclay and ZnO on the properties of the composite was examined. The distribution of silicate layers and ZnO nanopowder was studied by X‐ray diffractrometry and transmission electron microscopy. The improvement in miscibility among polymers due to addition of PE‐co‐GMA as compatibilizer was studied by scanning electron microscopy. WPC treated with 3 phr each of clay and ZnO showed an improvement in thermal stability and UV resistance. Mechanical and flame retarding properties were also enhanced after the incorporation of clay/ZnO nanopowder. Both water and water vapor absorption were found to decrease due to inclusion of nanoclay and ZnO in WPC. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012