bluuebunny/crossref_metadata_2025_split huggingface dataset:
Graduates giving back – a mentoring program for MBA students
Authors: Darwin Ann 
Published: August 2015

Purpose– The purpose of this paper is to discuss the challenges and obstacles encountered in the implementation of a mentoring program for Master of Business Administration (MBA) students at the University of South Australia (UniSA) Business School. The paper starts with an exploration into the need for a mentoring program, the trial and subsequent four years of implementation. The paper also explores the network model of mentoring and the reasons why this, rather than a more traditional model, was chosen for the program’s implementation.Design/methodology/approach– This exploratory case study uses data from over 600 students and their alumni mentors over a five-year period to evaluate and improve the program as well as cultivating a critical community of adult learners.Findings– Feedback from students indicates that the mentoring program is regarded by most as a value-added feature of their early learning as it offers support, if and when it is required, from those who have been there before.Research limitations/implications– Results are limited to one institution. However, as research into mentoring for higher education students is thin on the ground, this study contributes to our understanding of the positive impacts of mentoring on student success.Practical implications– This paper emphasizes the importance of business leaders giving back to their alma mater through mentoring current MBA students. It shows how mentoring can support learning and management development.Originality/value– This is an original study which explores ways to increase the learning of higher education students for positive social outcomes.
Experimental desktop 3D printing using dual extrusion and water-soluble polyvinyl alcohol
Authors: Duran Chelsea , Subbian Vignesh , Giovanetti Matthew T. , Simkins Jeffrey R. , Beyette Jr Fred R. 
Published: August 2015

Purpose
– This paper aims to discuss the use of polyvinyl alcohol (PVA) as a water-soluble support material in desktop three-dimensional (3D) printing. Using a water-soluble material as one of the printing filaments in a dual-extrusion 3D printer provides the flexibility of printing support structures and rafts in complex components and prototypes. This paper focuses on the challenges of acrylonitrile butadiene styrene (ABS)–PVA dual-extrusion printing, and optimal settings and techniques for such hybrid printing.

Design/methodology/approach
– Several hybrid ABS–PVA parts were printed using a commercial desktop 3D printer. An experimental study was designed to examine the solubility of the PVA support in water by varying four different parameters: length of time in water, water temperature, stirring rate and PVA surface area. The rate of PVA solubility in water was then used to examine its relationship with each parameter.

Findings
– Numerous problems were encountered while printing ABS–PVA printing parts, including storing the spool of PVA in a dry environment, determining optimal extrusion and build plate temperatures and ABS–PVA adherence during dual extrusion printing. There is no strong literature to address these challenges. Hence, optimal settings and techniques for effective hybrid ABS–PVA were determined. Print yields were also recorded to examine the reliability of ABS–PVA printing.

Research limitations/implications
– The tendency of PVA to absorb moisture resulted in a number of build fails and prevented build times longer than 40 minutes. Future work can explore how to print PVA directly from a dry environment.

Practical implications
– The optimal settings and techniques for dual-extrusion ABS–PVA printing that are presented in this paper can effectively be used to explore prototyping of geometrically complex parts with PVA as support material.

Originality/value
– In addition to the practical implications, the results from this work are a valuable addition to the literature related to printing using water-soluble polymers such as PVA. The experimental methods and techniques of this paper can be used to assess the reliability of similar 3D printing technologies.
The impact of process parameters on mechanical properties of parts fabricated in PLA with an open-source 3-D printer
Authors: Lanzotti Antonio , Grasso Marzio , Staiano Gabriele , Martorelli Massimo 
Published: August 2015

Purpose
– This study aims to quantify the ultimate tensile strength and the nominal strain at break (ɛf) of printed parts made from polylactic acid (PLA) with a Replicating Rapid prototyper (Rep-Rap) 3D printer, by varying three important process parameters: layer thickness, infill orientation and the number of shell perimeters. Little information is currently available about mechanical properties of parts printed using open-source, low-cost 3D printers.

Design/methodology/approach
– A computer-aided design model of a tensile test specimen was created, conforming to the ASTM:D638. Experiments were designed, based on a central composite design. A set of 60 specimens, obtained from combinations of selected parameters, was printed on a Rep-Rap Prusa I3 in PLA. Testing was performed using a JJ Instruments – T5002-type tensile testing machine and the load was measured using a load cell of 1,100 N.

Findings
– This study investigated the main impact of each process parameter on mechanical properties and the effects of interactions. The use of a response surface methodology allowed the proposition of an empirical model which connects process parameters and mechanical properties. Even though results showed a high variability, additional ideas on how to understand the impact of process parameters are suggested in this paper.

Originality/value
– On the basis of experimental results, it is possible to obtain practical suggestions to set common process parameters in relation to mechanical properties. Experiments discussed in the present paper provide a variety of data and insight regarding the relationship among the main process parameters and the stiffness and strength of fused deposition modeling-printed parts made from PLA. In particular, this paper underlines the shortage in existing literature concerning the impact of process parameters on the elastic modulus and the strain to failure for the PLA. The experimental data produced show a good degree of compliance with analytical formulations and other data found in literature.
The Myth of Bondi's Black Sunday
Authors: BOOTH DOUGLAS 
Published: August 2015

AbstractOn 6 February 1938, five bathers drowned while swimming between the flags at Bondi Beach, Sydney, Australia. In surf lifesaving history, the day is known as Black Sunday. The dominant heroic narrative of Black Sunday highlights freak surf conditions and the gallantry, efficiency, and adeptness of Bondi's volunteer surf lifesavers. In this article I analyse this representation as a myth. Here I employ the French philosopher Roland Barthes' concept of myth, not as a falsehood, but as simplistic story, replete with silences and devoid of critical assessment. I argue that the myth of Black Sunday served the interests of Surf Life Saving Australia well in establishing its status as the country's premier safety service. However, the culture that underpinned that myth still persists with ongoing ramifications for risk assessment at the beach.
Biomedical Activity and Related Volatile Compounds of Thai Honeys from 3 Different Honeybee Species
Authors: Pattamayutanon Praetinee , Angeli Sergio , Thakeow Prodpran , Abraham John , Disayathanoowat Terd , Chantawannakul Panuwan 
Published: August 2015

AbstractThis study investigated the effect of 3 factors (floral source, honeybee species, and postcollection processing) that influence the antibacterial activity, free radical reduction, and other biochemical compositions of different honey types typical of Thailand. Honey samples from 3 honeybee species (Apis mellifera, Apis cerana, and Apis dorsata) were obtained from 9 floral sources (longan, wild flower, lychee, coffee, sunflower, sesame, bitter bush, para‐rubber, and manuka as a control) in different regions of Thailand. These samples were evaluated for both their total and nonperoxide antibacterial activity against 10 human pathogens by agar incorporation technique. Honey samples were further analyzed to evaluate the capacity for free radical‐scavenging activity, total phenolic content, and the total flavonoid contents by the 2,2‐diphenyl‐1‐picrylhydrazyl assay, Folin–Ciocalteu method, and aluminum chloride colorimetric assay, respectively. Furthermore, the volatile organic compounds (VOCs) of Thai honey samples were investigated by headspace solid‐phase microextraction and gas chromatography‐mass spectrometry analysis. Findings of this study suggest a strong correlation between floral origin and honeybee species on one hand, and differences in %Brix, total acidity, protein content, antimicrobial activities, free radical reduction, phenolic, and flavonoid contents on the other hand. Moreover, VOCs of wild and coffee honey types were remarkably different, depending on the floral source. Both honeys contained characteristics of VOCs, some of which are involved in antibacterial and antioxidant activities.
Sensory and Functionality Differences of Whey Protein Isolate Bleached by Hydrogen or Benzoyl Peroxide
Authors: Smith Tucker J. , Foegeding E. Allen , Drake MaryAnne 
Published: August 2015

AbstractWhey protein is a highly functional food ingredient used in a wide variety of applications. A large portion of fluid whey produced in the United States is derived from Cheddar cheese manufacture and contains annatto (norbixin), and therefore must be bleached. The objective of this study was to compare sensory and functionality differences between whey protein isolate (WPI) bleached by benzoyl peroxide (BP) or hydrogen peroxide (HP). HP and BP bleached WPI and unbleached controls were manufactured in triplicate. Descriptive sensory analysis and gas chromatography‐mass spectrometry were conducted to determine flavor differences between treatments. Functionality differences were evaluated by measurement of foam stability, protein solubility, SDS‐PAGE, and effect of NaCl concentration on gelation relative to an unbleached control. HP bleached WPI had higher concentrations of lipid oxidation and sulfur containing volatile compounds than both BP and unbleached WPI (P < 0.05). HP bleached WPI was characterized by high aroma intensity, cardboard, cabbage, and fatty flavors, while BP bleached WPI was differentiated by low bitter taste. Overrun and yield stress were not different among WPI (P < 0.05). Soluble protein loss at pH 4.6 of WPI decreased by bleaching with either hydrogen peroxide or benzoyl peroxide (P < 0.05), and the heat stability of WPI was also distinct among WPI (P < 0.05). SDS PAGE results suggested that bleaching of whey with either BP or HP resulted in protein degradation, which likely contributed to functionality differences. These results demonstrate that bleaching has flavor effects as well as effects on many of the functionality characteristics of whey proteins.
Long‐term outcome of endoscopic and surgical resection for foregut neuroendocrine tumors
Authors: Jung Hee Jae , Hong Su Jin , Han Jae Pil , Kim Hyun Su , Jeong Gui‐Ae , Cho Gyu‐Seok , Kim Hee Kyoung , Ko Bong Min , Lee Moon Sung 
Published: August 2015

AbstractObjectiveEndoscopic resection (ER) of foregut neuroendocrine tumors (NETs) is increasingly performed instead of surgery. This study aimed to compare the long‐term therapeutic outcomes of ER and surgical resection (SR) for foregut NETs.MethodsFrom 2002 to 2012, a total of 49 patients with histologically confirmed foregut NETs were treated by ER (n = 33) and SR (n = 16). The clinicopathological characteristics and therapeutic outcomes were evaluated.ResultsOf the 33 patients who underwent ER [endoscopic mucosal resection (n = 26), endoscopic mucosal dissection (n = 7)], 32 were diagnosed as NET‐G1 and NET‐G2, and the other as neuroendocrine carcinoma (NEC). Of the 16 patients who underwent SR, 10 were diagnosed as NET‐G1, 2 as NET‐G2 and 4 as NEC. The median tumor size was significantly smaller in the ER group compared with the SR group (7 mm vs 19 mm, P = 0.001). In almost all patients treated with ER (32/33), NET invasion was limited to the mucosa and submucosa. Non‐curative resections were observed in 24.2% of the patients in the ER group (8/33) and 25.0% in the SR group (4/16). No recurrence occurred in NET cases with positive resection margins by ER. However, all cases of non‐curative resection with lymphatic invasion (one in the ER group and four in the SR group) developed liver metastasis during the follow‐up despite complete resection, and all these five patients has histologically confirmed NECs.ConclusionNET patients treated by ER may have a good prognosis if the tumor size is small and histologically low grade without lymphatic invasion.
Positive relationship between p42.3 gene and inflammation in chronic non‐atrophic gastritis
Authors: Chen Ping , Cui Yun , Fu Qing Yan , Lu You Yong , Fang Jing Yuan , Chen Xiao Yu 
Published: August 2015

ObjectiveGastric cancer (GC) is a typical type of inflammation‐related tumor. The p42.3 gene is shown to be highly expressed in GC, but its association with gastritis remains unknown. We aimed to explore the relationship between gastric inflammation and p42.3 gene in vitro and in vivo.MethodsNormal gastric epithelial cells (GES‐1) were treated with Helicobacter pylori (H. pylori) and tumor necrosis factor (TNF)‐α. Total cell mRNA and protein were extracted and collected, and polymerase chain reaction and Western blot were performed to determine the relative expression of p42.3 gene. In total, 291 biopsy samples from patients with chronic non‐atrophic gastritis were collected and immunohistochemistry was used to measure the p42.3 protein expression. The association between p42.3 protein expression and the clinicopathological characteristics of these patients were analyzed.ResultsBoth H. pylori and TNF‐α significantly enhanced the p42.3 protein expression in GES‐1 cells in a time and dose‐dependent manner. In addition, p42.3 gene expression was positively associated with the severity of gastric mucosal inflammation and H. pylori infection (P = 0.000). Its expression was significantly more common in severe gastric inflammation and in H. pylori‐infected cases.Conclusionp42.3 gene expression is associated with gastric mucosal inflammation that can be upregulated by TNF‐α and H. pylori infection.
Paleoecology of Oligocarpia gothanii Halle from the Middle Permian of Southeastern Shanxi, North China
Authors: Xuezhi HE , Mingli WAN , Mengxiao YAN , Chen CHENG , Shijun WANG , Jun WANG 
Published: August 2015

AbstractFossil ferns are abundant and diverse in the Permian Cathaysian Flora of Shanxi, North China. Although plants assemblages of the Carboniferous and Permian have been extensively investigated, their palaeoecology and especially the paleoecology of ferns has not been studied in detail. Recent reinvestigation of Oligocarpia gothanii has revealed its growth habit and cloning reproduction strategy, but most previous studies lack integrated sedimentological and taphonomic data. In this study, new materials of O. gothanii have been collected from a floodplain setting in the middle Permian Lower Shihhotse Formation of southeastern Shanxi. These plant fossils were found in a lenticular claystone associated with rooting structures. They are characterized by aphlebia at the base of the penultimate rachis. Sedimentological, taphonomic and morphological analyses were conducted to understand the growth habit and ecology of the fern. The result indicates that the Oligocarpia gothanii had a prostrate, ground cover growth habit, and was dominant in pioneer floras that colonized disturbed floodplains.
Recent Activity of the Badu‐Longwei Segment, Guguan‐Xiangong Fault in Southern Liupanshan, Constrained by Rhythmic Sediment Lithology and Geomorphic Characteristics
Authors: Zhigang SHI , Daoyang YUAN , Wengui HE , Xingwang LIU , Jun WANG 
Published: August 2015

AbstractThis study's objective was to investigate the Guguan‐Xiangong Fault, which lies in the southern Liupanshan area, through satellite image interpretation and field observations. Guguan‐Xiangong Fault is divided into five subsegments; among these, the Badu‐Longwei segment has been the most recently active. The geomorphic features of the Badu‐Longwei segment are clearly displayed, including multiple high fault scarps with fresh bedrock free faces. There is significant evidence for Holocene activity of the three fault sections, located in Renhuashu, Tianjiagou, and Xinjiecun respectively. The three sections feature distinct episodic deposition and fault scratches. Based on 14C‐dating and field observations on the three fault sections, two or more paleoearthquakes across the Badu‐Longwei fault segment are ascertained, between 5874±116 and 5430±140 a BP, and after 2037±83 a BP respectively. The Badu‐Longwei segment of the Guguan‐Xiangong Fault is preliminarily extrapolated as the seismogenic structure of the 600 A.D. Qin‐Long earthquake.
Sedimentation Rate Rhythms: Evidence from Filling of the Tarim Basin, Northwest China
Authors: Shuping CHEN , Zhijun JIN , Yi WANG , Ziyong ZHOU , Jingchang LI , Weili YANG 
Published: August 2015

AbstractVariations of sedimentation rate within a basin over geologic time are a time series that can be filtered into several cyclic wave curves. Based on back‐stripping and the empirical mode decomposition method, the cores from 14 wells in the Tarim Basin were selected to do filtering analysis. Four cycles or quasi‐cycles (33 Ma, 64.4 Ma, 103.6 Ma, and 224 Ma) were obtained. Among these, the 33 Ma period, which was related to the internal earth activity, an external force, or a combination of the two, was the most obvious. The 64.4 Ma period corresponded to the solar system crossing the galaxy plane or the periodic melting of inner‐earth material. The 103.6 Ma period was related with plate collisional tectonism around the Tarim Plate. The 224 Ma period was related to one galaxy year and may also be related to the aesthenospherical convection cycle.
A Preliminary Review on the Metallogeny of Pb‐Zn Deposits in China
Authors: Changqing ZHANG , Huan LIU , Denghong WANG , Yuchuan CHEN , Zongyao RUI , Debo LOU , Yue WU , Fudong JIA , Zhenghui CHEN , Xuyang MENG 
Published: August 2015

AbstractLead and zinc resources are abundant in China, with the reserves of 100 million tons ranking only second in the world. There are more than 3000 lead‐zinc mine areas nationwide. The classification of lead‐zinc (Pb‐Zn) deposits has been a highly controversial issue. From the standpoint of evaluating the potential of mineral resources, we construct a Pb‐Zn deposit predictive type of classification scheme, and propose a Pb‐Zn deposit comprehensive classification scheme (including 5 classes and 13 sub‐types) that regards mineralization as the primary factor and the ore rock as secondary. According to the temporal and spatial distribution of Pb‐Zn deposits, we conclude that a multi‐period, multi‐cycle orogenic environment is the most favorable for lead‐zinc deposit growth, that the Proterozoic is the major eon for the growth of igneous‐type deposits, the Paleozoic is an important development era for sedimentary Pb‐Zn deposits, and the Mesozoic and Cenozoic are the heyday eras of magmatic type lead‐zinc deposits. On this basis, we analyse the relationship between tectonic evolution and Pb‐Zn metallogenic, and propose that the key factors determining geological mineralization are the metallogenic epoch of mineralization and tectonic environment, which determine the temporal and spatial distribution.
Morcellation of occult uterine malignancies: an Australian single institution retrospective study
Authors: Tan Adeline , Salfinger Stuart , Tan Jason , Cohen Paul 
Published: August 2015

IntroductionMorcellation for tissue extraction during laparoscopic hysterectomy or myomectomy has recently been questioned because of the potential to spread occult uterine cancers. The Australian Therapeutic Goods Administration (TGA) issued a safety advisory in August 2014, estimating the risk of occult malignancy in the Australian population to be one in 1000 or lower, based on estimates from overseas studies in the absence of any local data.AimsThe aim of this study was to determine the incidence of occult uterine malignancies in morcellated surgical specimens at St John of God Hospital in Perth, Western Australia.Materials and MethodsAll women who had a hysterectomy or myomectomy with morcellation of the surgical specimen for presumed benign uterine fibroids at our institution from 01 November 2009 to 12 March 2015 were identified and stratified into benign disease, uncertain malignant potential and malignant.ResultsSeven hundred and thirty‐four women were included, and three malignancies were identified: two cases with leiomyosarcoma (LMS) and another with an endometrioid endometrial adenocarcinoma (EAC). One case of serous tubal in situ carcinoma (STIC) and two cases of benign metastasising leiomyoma/leiomyomatosis were also identified. The overall risk of malignancy in a morcellated surgical specimen was 0.41% (three in 734). The risk of morcellating an incidental uterine malignancy was 0.27% for LMS and 0.14% for EAC. All three incidental malignancies were diagnosed in premenopausal women.ConclusionsThe risk of unintended morcellation of uterine malignancy in our study is higher than that estimated by the Australian TGA and highlights the urgent need for further studies in Australia.
Auscultate, palpate and tap: time to re‐evaluate
Authors: Hawkes GA , Hawkes CP , Kenosi M , Demeulemeester J , Livingstone V , Ryan CA , Dempsey EM 
Published: August 2015

AbstractAimTo determine the accuracy of current methods of heart rate (HR) assessment.MethodsAll participants palpated a simulated pulsating umbilicus (UMB), listened to a tapping rate (TAP) and auscultated a simulated HR (AUSC). A simulated HR of 54, 88 and 128 beats per minute (bpm) was randomised for all methods.ResultsTwenty‐nine healthcare staff participated in this study. Correct assessment of HR of 54 bpm as being within the 0‐59 range occurred in 17.2% UMB, 17.2% TAP and 31% AUSC and was obtained in <10 seconds by 48.3%, 65.5% and 62.1%, respectively. A rate of 88 bpm was correctly assessed as within the 60–100 range in 82.8% UMB, 79.3% TAP and 79.3% AUSC and was obtained in <10 seconds by 55.2%, 58.6% and 55.2%, respectively. A rate of 128 bpm was identified as >100 bpm by 96.6% UMB, 93.1% TAP, and 93.1% AUSC and was obtained in <10 seconds by 51.7%, 55.2% and 62.1%, respectively.ConclusionCurrent methods in assessing rates below 60 bpm are inaccurate and may overestimate HR. We recommend that these methods alone should not be relied upon in neonatal resuscitation and objective assessment of heart rate should be readily available at all newborn resuscitations.