bluuebunny/crossref_metadata_2025_split huggingface dataset:
Silicate-Activated Geopolymer Alternatives to Portland Cement for Thermal Well Integrity
Authors: van Oort Eric , Juenger Maria , Liu Xiangyu , McDonald Michael 
Published: November 2019

Abstract
Ordinary Portland cement (OPC) has been the material of choice for oil & gas well cementing and abandonment for many decades now. However, there are drawbacks to the use of OPC for cementing and abandonment purposes, particularly in wells with higher temperatures. OPC is brittle and does not re-heal when cracked. It is easily contaminated by mud and spacer fluids. Furthermore, it has relatively low tensile strength and low strength when bonding to rock formations and casing. Moreover, the production of OPC is the 2nd largest source of CO2 emissions in the world. At the CODA industry-affiliate consortium at the University of Texas at Austin dedicated to well construction, decommissioning and abandonment, work is ongoing to find technically superior alternatives to OPC. Particularly promising materials are so-called geopolymers, formed by activating an alumino-silicate material such as fly ash (a waste material that is often discarded) with an alkali. It was found that these geopolymer materials offer more ductile strength and failure behavior, considerable resistance to contamination, higher tensile strength and bond strength, and an ability to re-heal when damaged. The results obtained for geopolymers formed by activating flyash with potassium and sodium silicates indicate that these may be well-suited for achieving long-term thermal well integrity.
An operon consisting of a P-type ATPase gene and a transcriptional regulator gene responsible for cadmium resistances in Bacillus vietamensis 151-6 and Bacillus marisflavi 151-25
Authors: Yu Xiaoxia , Ding Zundan , Ji Yangyang , Zhao Jintong , Liu Xiaoqing , Tian Jian , Wu Ningfeng , Fan Yunliu 
Published: November 2019

Abstract
Background: Cadmium (Cd) is a severely toxic heavy metal to most microorganisms. Many bacteria have developed Cd 2+ resistance. Results: In this study, we isolated two different Cd 2+ resistance Bacillus sp . strains, Bacillus vietamensis 151-6 and Bacillus marisflavi 151-25 , which could be grown in the presence of Cd 2+ at concentration up to 0.3 mM and 0.8 mM, respectively. According to the genomic sequencing, transcriptome analysis under cadmium stress, and other related experiments, a gene cluster in plasmid p25 was found to be a major contributor to Cd 2+ resistance in B. marisflavi 151-25. The cluster in p25 contained orf4802 and orf4803 which encodes an ATPase transporter and a transcriptional regulator protein, respectively. Although 151-6 has much lower Cd 2+ resistance than 151-25, they contained similar gene cluster, but in different locations. A gene cluster on the chromosome containing orf4111 , orf4112 and orf4113 , which encodes an ATPase transporter, a cadmium efflux system accessory protein and a cadmium resistance protein, respectively, was found to play a major role on the Cd 2+ resistance for B. vietamensis 151-6. Conclusions: This work described cadmium resistance mechanisms in newly isolated Bacillus vietamensis 151-6 and Bacillus marisflavi 151-25. Based on homologies to the cad system (CadA-CadC) in Staphylococcus aureus and analysis of transcriptome under Cd 2+ induction, we inferred that the mechanisms of cadmium resistance in B. marisflavi 151-25 was as same as the cad system in S. aureus . Although Bacillus vietamensis 151-6 also had the similar gene cluster to B. marisflavi 151-25 and S. aureus , its transcriptional regulatory mechanism of cadmium resistance was not same. This study explored the cadmium resistance mechanism for B. vietamensis 151-6 and B. marisflavi 151-25 and has expanded our understanding of the biological effects of cadmium.
Role of collateral embolization in addition to uterine artery embolization followed by hysteroscopic curettage for the management of cesarean scar pregnancy
Authors: Zhang Guodong , Li Jijun , Tang Jun , Zhang Lei , Wang Dechao , Sun zengtao 
Published: November 2019

Abstract
The aim of this study was to assess the feasibility, safety and outcome of the embolization of non-gonadal collateral supplying gestational sac (GS) in addition to uterine artery embolization (UAE), followed by hysteroscopic curettage for the management of cesarean scar pregnancy (CSP). Methods: A retrospective study was undertaken from January 2012 to September 2018 in 24 CSP patients in whom non-gonadal collaterals supplying GS were identified by arterial angiography performed immediately after UAE. These patients underwent attempt collateral embolization in addition to UAE, followed by hysteroscopic curettage for the management of CSP. The 24 patients were divided into two groups based on whether they underwent technically successful collateral embolization (UAE-SCE group) or failed collateral embolization (UAE-FCE group) in addition to UAE. The baseline characteristics and clinical outcomes including time for serum β-human chorionic gonadotropin (β-hCG) levels normalization, blood loss, secondary anemia, and pelvic pain were compared between the two groups. The paired t test and Man Whitney test were used for comparisons of discrete and numerical variables, respectively. Results: Collateral embolization was techinically successful in 16 (66.7%, 16/24) patients and failed in the other 8 (33.3%, 8/24) patients. There were no significant differences between the two groups in baseline characteristics. The mean blood loss and secondary anemia in the UAE-SCE group were significantly less than UAE-FCE group. No significant difference was found between the two groups in the mean time for β-hCG levels normalization and pelvic pain. Conclusions: During the management of UAE combined with hysteroscopic curettage for CSP, additional embolization of non-gonadal collateral supplying GS during UAE is feasible and safe in patients with non-gonadal collateral supplying GS, and the additional embolization of the collateral may reduce blood bloss related to hysteroscopic curettage.
Simulation-based education improves student self-efficacy in physiotherapy assessment and management of paediatric patients
Authors: Hough Judith , Levan Daniel , Steele Michael , Kelly Kristine , Dalton Megan 
Published: November 2019

Abstract
The Australian Physiotherapy Council mandates that physiotherapy clinical education be sufficient to produce graduates who are competent to practice across the lifespan. Due to a lack of opportunities for paediatric clinical placements, there is a risk of graduates not having the opportunity to develop competency in paediatric physiotherapy. To address this risk, simulation-based education (SBE) has been proposed as an educational strategy to address the placement shortfall. Despite encouraging evidence for its use in physiotherapy education, there is limited evidence supporting its use specifically in paediatric populations. The aims of this research were to investigate the effect of SBE on student self-efficacy in the physiotherapy assessment and management of paediatric clients, and to determine student satisfaction with SBE as a learning strategy. Three interactive SBE sessions were run during the undergraduate paediatric physiotherapy unit at the campus of one Australian university. Self-efficacy was surveyed before and after each session, to determine confidence in clinical skills, clinical decision-making, treatment preparation and planning, communication skills; evaluating and modifying interventions, and interprofessional practice. Student satisfaction with SBE as a learning strategy was surveyed after the final SBE session. For the 164 participants included in this study, self-efficacy survey response rate varied from 77-96% for each session. Significant increases in mean student self-efficacy were recorded for all questions (p<0.001). A total of 139 (85%) responded to the learning reactionnaire with 78.6% indicating they were very satisfied with SBE as a learning strategy. Written comments from 41 participants identified ‘experience’ as the primary theme.
Conclusion: SBE had a significant positive effect on student self-efficacy in the physiotherapy assessment and management of paediatric patients. Students also perceived SBE to be a valuable learning experience. Future research is needed to investigate whether the improvement in self-efficacy achieved through SBE translates into improved student performance during workplace-based clinical placements.
Trends in prevalence and correlates of intimate partner violence against women in Zimbabwe, 2005-2015
Authors: Mukamana Jeanette Iman'ishimwe , Machakanja Pamela , Adjei Nicholas Kofi 
Published: November 2019

Abstract
Background: Intimate partner violence (IPV) is a widespread problem affecting all cultures and socioeconomic groups. This study explored the trends in prevalence and risk factors associated with IPV among Zimbabwean women of reproductive age (15-49 years) from 2005-2015. Methods: Data from the 2005/2006, 2010/2011 and 2015 Zimbabwe Demographic and Health Survey (ZDHS) on 13,409 women (survey year: 2005/2006; n=4,081), (survey year: 2010/2011; n=4,411) and (survey year: 2015; n=4,917) were analyzed. Multiple logistic regressions and hierarchical modelling techniques were applied to examine the associations between demographic characteristics, socioeconomic status, media exposure and IPV against women. We further estimated IPV prevalence by type (physical, sexual and emotional) over time. Results: The prevalence of IPV decreased from 45.2% in 2005 to 40.9% in 2010, and then increased to 43.1% in 2015. Some of the risk factors associated with IPV were younger age, low economic status, cohabitation and rural residence. Educational attainment of women was however not significantly associated with IPV. Conclusions: The findings indicate that women of reproductive age are at high and increasing risk of physical and emotional violence. There is thus an urgent need for an integrated policy approach to address the rise of IPV related physical and emotional violence against women in Zimbabwe. Keywords: Intimate Partner Violence (IPV); Trends; Risk factors; Demographic and Health Surveys (DHS); Zimbabwe
Assessment of infection in newly diagnosed multiple myeloma patients: Risk factors and main characteristics
Authors: Lin Chenyao , Shen Hui , Zhou Shuimei , Liu Minghui , Xu Anjie , Huang Shuang , Shen Changxin , Zhou Fuling 
Published: November 2019

Abstract
Background: Infection is a leading cause of morbidity and death in patients with multiple myeloma (MM). The increased susceptibility to infection is complicated and multifactorial. However, no studies have explored the spectrum and risk factors of infections in newly diagnosed MM patients at the first admission. This cross-sectional study aimed to provide ideas for the assessment, prevention and treatment of infection in newly diagnosed MM patients when admitted for the first time. Methods: Retrospectively, the data from electronic medical records for 161 patients newly diagnosed with MM from May 2013 to December 2018 were analysed. All the information was collected at the time of admission, and the patients had received no antineoplastic therapy previously. Independent risk factors of infection in multiple myeloma were determined by univariate and multivariate analysis. Results: Newly diagnosed patients with MM were highly susceptible to viruses (43.9%), especially Epstein-Barr virus (EBV) (24.4%) and hepatitis B virus (HBV) (17.1%). Advanced stage (ISS stage III, P =0.040), more severe anaemia (Hb<90 g/L, P =0.044) and elevated CRP (>10 mg/L, P =0.006) were independent risk factors for infection. Moreover, infections represented a major survival threat to patients with newly diagnosed MM ( P = 0.033), and the existence of risk factors for infection was significantly correlated with poor prognosis ( P = 0.011), especially ISS stage III ( P =0.008) and lower haemoglobin level ( P =0.039). Conclusions: Newly diagnosed MM patients are highly susceptible to viruses. Advanced ISS stage, more severe anaemia and the elevation of CRP are independent risk factors of infection, which also have a strong impact on prognosis. Our results suggest that viral infection should be taken into account if antibacterial drugs are not effective, and the prevention of infection and improvement of prognosis should be paid more attention in newly diagnosed patents with advanced stage and more severe anaemia.
Scaling Up Quality Improvement for Surgical Teams (QIST) - avoiding surgical site infection and anaemia at the time of surgery: protocol for a cluster randomised controlled trial
Authors: Scrimshire Ashley B , Booth Alison , Fairhurst Caroline , Tadd Win , Laverty Annie , Corbacho Belen , Torgerson David , McDaid Catriona , Reed Mike 
Published: November 2019

Abstract
Background: Measures shown to improve outcomes for patients often fail to be adopted into routine practice in the NHS. The Institute for Health Improvement Breakthrough Series Collaborative (BSC) model is designed to support implementation at scale. This trial aims to assess the effectiveness and cost-effectivenessof quality improvement collaboratives based on the BSC method for introducing service improvements at scale in the NHS. Methods: Forty Trusts will be randomised (1:1) to introduce one of two protocols already shown to improve outcomes in patients undergoing elective total hip and knee replacement surgery. The intervention is improvement collaboratives based on the BSC model, a learning system that brings together a large number of teams to seek improvement focused on a proven intervention. Collaboratives aim to deliver at scale, maximise local engagement and leadership and are designed to build capacity, enable learning and prepare for sustainability. Collaboratives involve learning sessions, action periods, and a summative congress. Trusts will be supported to introduce either: decolonisation for MSSA to reduce post-operative infection (QIST:Infection), or an anaemia optimisation programme to reduce peri-operative blood transfusions (QIST:Anaemia). Trusts will continue with their usual practice for whichever protocol they are not introducing. Anonymised data related to both infection and anaemia outcomes for patients undergoing hip or knee arthroplasty at all sites will mean the two groups act as controls for each other. The primary outcome for the QIST: Infection collaborative is deep MSSA surgical site infection within 90 days of surgery, and for the QIST: Anaemia collaborative is blood transfusion within 7 days of surgery. Patient-level secondary outcomes include length of hospital stay and re-admission, which will also inform the economic costings. Qualitative interviews will evaluate the support provided to teams. Discussion: The scale of this trial brings considerable challenges and potential barriers to delivery. Anticipated challenges relate to recruiting and sustaining up to 40 organisations, each with their own culture and context. This complex project with multiple stakeholders across a large geography will be managed by experienced senior-level project leaders with a proven track record in advanced project management. The team will ensure effective project governance and communications.
Glioma SOX2 expression decreased after adjuvant therapy
Authors: Yu Wei , Ren Xiaoqiu , Hu Chunxiu , Tan Yinuo , Shui Yongjie , Chen Zexin , Zhang Lili , Peng Jiaping , Wei Qichun 
Published: November 2019

Abstract
SOX2 is regarded as an important marker in stem cell. The change of SOX2 expression after adjuvant therapy in high grade glioma (HGG) remains unknown so far. Few patients with recurrent glioma have opportunity to undergo operation once again, so the recurrent glioma samples are scarce. This study tries to analyze SOX2 expression in paired primary and recurrent HGG, aims to better understand the transformation law of SOX2 after adjuvant therapy in HGG.Methods Twenty-four recurrent HGG patients who undergone a second resection were included. 16 patients received adjuvant therapy, the remaining 8 patients didn’t receive any adjuvant therapy at all. The protein expression of SOX2 in paired primary and recurrent HGG was tested by immunohistochemistry. The statistical analysis was conducted by IBM SPSS Statistics 19.0.Results In primary HGG, SOX2 expression of 3+,2+,1+ and 0+ were seen in 20 (83.3%), 1 (4.2%), 1 (4.2%) and 2 cases (8.3%), respectively. The expression of SOX2 was decreased in recurrent HGG compared to the paired primary sample (p=0.001). The decrease of SOX2 was often seen in patients received chemotherapy, radiotherapy or both (p=0.003). Patients with SOX2 high expression in primary glioma had a longer median PFS than those with SOX2 low expression with marginal statistic significance (12.7 vs. 5.4 months, p=0.083). For cases with SOX2 high expression in the primary glioma, those had SOX2 low expression after recurrence seemed to have worse prognosis as compared to patients with stable SOX2 high expression (PFS: 10.4 vs. 14.9 months, p=0.036; OS: 27.0 vs 49.5 months, p=0.005).Conclusions This is the first study comparing the protein expression of SOX2 in recurrent HGG and its paired primary tumor. SOX2 high expression is common in brain HGG, a tendency of decreased SOX2 expression in recurrent gliomas was evidenced. Lower SOX2 expression was seen in those patients who received adjuvant chemotherapy and/or radiotherapy. Patients with low SOX2 expression in primary HGG usually have poorer prognosis, those with SOX2 expression decreased in recurrent HGG had worse outcome.
Factors Associated With Loss-To-Follow-Up Of Hiv-Positive Mothers And Their Infants Enrolled In Hiv Care Clinic: A Qualitative Study
Authors: Mpinganjira Samuel Lawrent , Tchereni Timothy , Gunda Andrews , Mwapasa Victor 
Published: November 2019

Abstract
Background
In Malawi, loss to follow-up (LTFU) of HIV-positive pregnant and postpartum women on Option B+ regimen greatly contributes to sub-optimal retention, estimated 74% at 12 months postpartum. This threatens Malawi’s efforts to eliminate mother-to-child transmission of HIV. We investigated factors associated with LTFU among Mother-Infant Pairs.
Methods
We conducted a qualitative study, nested within the “Promoting Retention Among Infants and Mothers Effectively (PRIME)” study, a 3-arm cluster randomized trial assessing the effectiveness of strategies for improving retention of mother-infant pairs in HIV care in Salima and Mangochi districts, Malawi. From July to December 2016, we traced 19 LTFU women and conducted in-depth interviews with them and also with 30 healthcare workers from health facilities where the LTFU women were receiving care. Recorded interviews were transcribed and translated and, then, analysed using deductive content analysis.
Results
The following reasons were reported contributing to LTFU: lack of support from husbands or family members; long distance to health facilities; food insecurity; community-level stigma; ART side effects; perceived good health after taking ART and adoption of other alternative HIV treatment options.
Conclusion
Our study has found multiple factors at personal, family, community and health system level which contribute to poor retention of mother-infant pairs in HIV care.
Key words
PRIME, PMTCT, EMTCT, loss to follow up, mother-infant pairs, Option B+
Characterization of genome-wide genetic variations between two varieties of tea plant (Camellia sinensis) and development of InDel markers for genetic research
Authors: Liu Shengrui , An Yanlin , Tong Wei , Qin Xiuju , Samarina Lidia , Guo Rui , Xia Xiaobo , Wei Chaoling 
Published: November 2019

Abstract
Single nucleotide polymorphisms (SNPs) and insertions/deletions (InDels) are the major genetic variations and are distributed extensively across the whole plant genome. However, few studies of these variations have been conducted in the long-lived perennial tea plant. In this study, we investigated the genome-wide genetic variation between Camellia sinensis var. sinensis ‘Shuchazao’ and Camellia sinensis var. assamica ‘Yunkang 10’, identified 7,511,731 SNPs and 255,218 InDels based on their whole genome sequences, and we subsequently analyzed their distinct types and distribution patterns. A total of 48 InDel markers that yielded polymorphic and unambiguous fragments were developed when screening six tea cultivars. These markers were further deployed on forty-six tea cultivars for transferability and genetic diversity analysis, exhibiting information with an average 4.02 of the number of alleles (Na) and 0.457 of polymorphism information content (PIC). The dendrogram showed that the phylogenetic relationships among these tea cultivars are highly consistent with their genetic backgrounds or original places. Interestingly, we observed that the catechin/caffeine contents between ‘Shuchazao’ and ‘Yunkang 10’ were significantly different, and a large number of SNPs/InDels were identified within catechin/caffeine biosynthesis-related genes. The identified genome-wide genetic variation and newly-developed InDel markers will provide a valuable resource for tea plant genetic and genomic studies, especially the SNPs/InDels within catechin/caffeine biosynthesis-related genes, which may serve as pivotal candidates for elucidating the molecular mechanism governing catechin/caffeine biosynthesis.
Suprapatellar versus infrapatellar approaches in the treatment of tibia intramedullary nailing ： A retrospective cohort study
Authors: Cui Yiliang , Hua Xingyi , Schmidutz Florian , Zhou Jian , Yin Zongsheng , Yan Shuang G 
Published: November 2019

Abstract
Background: Tibial shaft fractures are routinely managed with intramedullary nailing (IMN). An increasingly accepted technique is the suprapatellar (SP) approach. The purpose of this study was to compare the clinical and functional outcomes of knee joint after tibia IMN through an suprapatellar (SP) or traditional infrapatellar (IP) approach.
Methods: Retrospective analysis was performed in patients with tibial shaft fractures that were treated with IMN through a SP or IP approach between 01/01/2014 and 31/12/2016. The clinical and functional outcomes of the knee were assessed with the Hospital for Special Surgery (HSS) Knee Score. Secondary outcomes included the operation time and intraoperative blood loss.
Results: A total of 50 patients/fractures (26 IP and 24 SP) with a minimum follow-up of 15 months were evaluated. All fractures were OTA 42. No significant differences were found between the two groups in age, gender, side of fractures, operation time, intra-operative blood loss, and follow-up time. No significant difference was seen in HSS score ( P = 0.62) between them. Sub analysis of all the HSS components scores revealed no significant differences between pain ( P = 0.57), the stand and walk ( P = 0.54), the need for walking stick ( P = 0.60) and extension lag ( P = 0.60). The other HSS components showed full scores (IP 10 vs. SP 10) in both approaches, including muscle force, flexion deformity and stability components. The range of motion (ROM) component score was superior in the IP group ( P = 0.04) suggesting a higher ROM.
Conclusions: Both SP and IP approach results in equivalent overall HSS knee scores. However, for the HSS component, the IP approach was superior to SP approach regarding the ROM.