bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance, morphology and control of power-amplified mandibles in the trap-jaw antMyrmoteras(Hymenoptera: Formicidae)
Authors: Larabee Fredrick J. , Gronenberg Wulfila , Suarez Andrew V. 
Published: August 2017

ABSTRACTTrap-jaw ants are characterized by high-speed mandibles used for prey capture and defense. Power-amplified mandibles have independently evolved at least four times among ants, with each lineage using different structures as a latch, spring and trigger. We examined two species from the genus Myrmoteras (subfamily Formicinae), whose morphology is unique among trap-jaw ant lineages, and describe the performance characteristics, spring-loading mechanism and neuronal control of Myrmoteras strikes. Like other trap-jaw ants, Myrmoteras latch their jaws open while the large closer muscle loads potential energy in a spring. The latch differs from other lineages and is likely formed by the co-contraction of the mandible opener and closer muscles. The cuticle of the posterior margin of the head serves as a spring, and is deformed by approximately 6% prior to a strike. The mandibles are likely unlatched by a subgroup of closer muscle fibers with particularly short sarcomeres. These fast fibers are controlled by two large motor neurons whose dendrites overlap with terminals of large sensory neurons originating from labral trigger hairs. Upon stimulation of the trigger hairs, the mandibles shut in as little as 0.5 ms and at peak velocities that are comparable with other trap-jaw ants, but with much slower acceleration. The estimated power output of the mandible strike (21 kW kg−1) confirms that Myrmoteras jaws are indeed power amplified. However, the power output of Myrmoteras mandibles is significantly lower than distantly related trap-jaw ants using different spring-loading mechanisms, indicating a relationship between power-amplification mechanism and performance.
Assessing student characteristics in palliative care education research: a literature review
Authors: Lippe Megan , Carter Patricia 
Published: August 2017

Background: Assessing characteristics in educational research is important to describe a student sample. However, consistency in measuring student characteristics is lacking, particularly in palliative and end-of-life (PEOL) care education research. Methods: A literature review was conducted to determine the primary characteristics to assess in PEOL education research, the corresponding level of measurement and associated statistical analyses to perform with the data. Results: Key characteristics to measure include: age, previous PEOL healthcare experience, previous personal experience with death/loss, previous PEOL education, program of enrolment and religion. Gender, ethnicity/race and living situation/place of residence were not supported as key characteristics to assess. Best methods by which to measure characteristics remain unclear and the utilisation of characteristics in research is inconsistent. Conclusion: Identified characteristics should be measured in PEOL education research at the highest level of measurement. The influence of characteristics on outcomes should be considered in association with research questions.
Thompson hemiarthroplasty versus modular unipolar implants for patients requiring hemiarthroplasty of the hip
Authors: Sims A. L. , Farrier A. J. , Reed M. R. , Sheldon T. A. 
Published: August 2017

Objectives The objective of this study was to assess all evidence comparing the Thompson monoblock hemiarthroplasty with modular unipolar implants for patients requiring hemiarthroplasty of the hip with respect to mortality and complications. Methods A literature search was performed to identify all relevant literature. The population consisted of patients undergoing hemiarthroplasty of the hip for fracture. The intervention was hemiarthroplasty of the hip with a comparison between Thompson and modular unipolar prostheses. Pubmed, Embase, CINAHL, Web of Science, PROSPERO and the Cochrane Central Register of Controlled Trials. The study designs included were randomised controlled trials (RCTs), well designed case control studies and retrospective or prospective cohort studies. Studies available in any language, published at any time until September 2015 were considered. Studies were included if they contained mortality or complications. Results The initial literature search identified 4757 items for examination. Four papers were included in the final review. The pooled odds ratio for mortality was 1.3 (95% confidence Interval 0.78 to 2.46) favouring modular designs. The pooled odds ratio for post-operative complications was 1.1 (95% CI 0.79 to 1.55) favouring modular designs. Outcomes were reported at 12 or six months. These papers all contained potential sources of bias and significant clinical heterogeneity. Conclusion The current evidence comparing monoblock versus modular implants in patients undergoing hemiarthroplasty is weak. Confidence intervals around the pooled odds ratios are broad and incorporate a value of one. Direct comparison of outcomes from these papers is fraught with difficulty and, as such, may well be misleading. A well designed randomised controlled trial would be helpful to inform evidence-based implant selection. Cite this article: A. L. Sims, A. J. Farrier, M. R. Reed, T. A. Sheldon. Thompson hemiarthroplasty versus modular unipolar implants for patients requiring hemiarthroplasty of the hip: A systematic review of the evidence. Bone Joint Res 2017;6:–513. DOI: 10.1302/2046-3758.68.BJR-2016-0256.R1.
Dose optimisation of intravenous tranexamic acid for elective hip and knee arthroplasty
Authors: Morrison R. J. M. , Tsang B. , Fishley W. , Harper I. , Joseph J. C. , Reed M. R. 
Published: August 2017

Objectives We have increased the dose of tranexamic acid (TXA) in our enhanced total joint recovery protocol at our institution from 15 mg/kg to 30 mg/kg (maximum 2.5 g) as a single, intravenous (IV) dose. We report the clinical effect of this dosage change. Methods We retrospectively compared two cohorts of consecutive patients undergoing total hip arthroplasty (THA) or total knee arthroplasty (TKA) surgery in our unit between 2008 and 2013. One group received IV TXA 15 mg/kg, maximum 1.2 g, and the other 30 mg/kg, maximum 2.5 g as a single pre-operative dose. The primary outcome for this study was the requirement for blood transfusion within 30 days of surgery. Secondary measures included length of hospital stay, critical care requirements, re-admission rate, medical complications and mortality rates. Results A total of 1914 THA and 2537 TKA procedures were evaluated. In THA, the higher dose of TXA was associated with a significant reduction in transfusion (p = 0.02, risk ratio (RR) 0.74, 95% confidence interval (CI) 0.58 to 0.96) and rate of re-admission (p < 0.001, RR 0.50, 95% CI 0.35 to 0.71). There were reductions in the requirement for critical care (p = 0.06, RR 0.55, 95% CI 0.31 to 1.00), and in the length of stay from 4.7 to 4.3 days (p = 0.02). In TKA, transfusion requirements (p = 0.049, RR 0.64, 95% CI 0.41 to 0.99), re-admission rate (p = 0.001, RR 0.56, 95% CI 0.39 to 0.80) and critical care requirements (p < 0.003, RR 0.34, 95% CI 0.16 to 0.72) were reduced with the higher dose. Mean length of stay reduced from 4.6 days to 3.6 days (p < 0.01). There was no difference in the incidence of deep vein thrombosis, pulmonary embolism, gastrointestinal bleed, myocardial infarction, stroke or death in THA and TKA between cohorts. Conclusion We suggest that a single pre-operative dose of TXA, 30 mg/kg, maximum 2.5g, results in a lower transfusion requirement compared with a lower dose in patients undergoing elective primary hip and knee arthroplasty. However, these findings should be interpreted in the context of the retrospective non-randomised study design. Cite this article: R. J. M. Morrison, B. Tsang, W. Fishley, I. Harper, J. C. Joseph, M. R. Reed. Dose optimisation of intravenous tranexamic acid for elective hip and knee arthroplasty: The effectiveness of a single pre-operative dose. Bone Joint Res 2017;6:499–505. DOI: 10.1302/2046-3758.68.BJR-2017-0005.R1.
Staple line oversewing during laparoscopic sleeve gastrectomy
Authors: Wang H , Lu J , Feng J , Wang Z 
Published: August 2017

Introduction This meta-analysis was performed to assess the possible benefits of staple line oversewing during laparoscopic sleeve gastrectomy. Methods A comprehensive search up to February 2017 was conducted on PubMed, the Web of Science™ and Embase™. All eligible studies were included, and the outcomes of staple line bleeding and leak, overall complications and operative time were pooled. Results A total of 7 randomised controlled trials involving 845 patients (428 cases and 417 controls) were analysed. There was no significant difference in staple line bleeding (relative risk [RR]: 0.858, 95% confidence interval [CI]: 0.343–2.143, p=0.742), leak (RR: 0.650, 95% CI: 0.257–1.644, p=0.363) or overall complications (RR: 0.913, 95% CI: 0.621–1.342, p=0.644) between the oversewing group and the patients who did not have oversewing. Oversewing of the staple line was associated with a longer operative time (weighted mean difference: 14.400, 95% CI: 7.198–21.602, p=0.000). Conclusions Oversewing the staple line during laparoscopic sleeve gastrectomy does not decrease the risk of staple line bleeding, leakage or overall complications but it does prolong the operative time.
Changes in bone turnover markers in primary hyperparathyroidism and response to surgery
Authors: Rajeev P , Movseysan A , Baharani A 
Published: August 2017

Introduction Involvement of the bone is common in primary hyperparathyroidism. The aim of the study was to assess bone turnover markers in response to surgery for primary hyperparathyroidism. Methods This was a retrospective study of patients diagnosed and treated for parathyroid disease between 2005 and 2012. Interventions studied were surgery and medical treatment. The main outcome measures studied were serum levels of calcium, intact parathyroid hormone (iPTH), bone-specific alkaline phosphatase, N-terminal cross-linking propeptide of type 1 procollagen (P1NP) and C-terminal cross-linking telopeptides of type I collagen (CTX), both pre- and postoperatively at 6 months and 1 year; bone mineral density (at the spine and hip assessed by dual-energy x-ray absorptiometry after 1 year of treatment. Results A total of 122 (110 female, 12 male) patients (age range 25–91 years) underwent treatment for parathyroid disease during the study period; 30 patients were treated conservatively and 92 proceeded to surgery following localisation studies. Following surgical intervention, P1NP dropped significantly from a mean of 64.68 ng/ml (standard deviation, SD ± 68.07 ng/ml) preoperatively to 26.37 ng/ml (SD ± 20.94 ng/ml) and CTX from 0.69 pg/ml (SD ± 0.44 pg/ml) to 0.15 pg/ml (SD ± 0.16 pg/ml) at 6–12 months (P < 0.0001). This change was reflected in improvement in bone mineral density (T scores) of the hip and spine by 43% (P < 0.03) and 38% (P < 0.01), respectively, following surgery. In patients treated conservatively (n = 30), there was no improvement either in the bone turnover markers or bone densitometry scans. Conclusions Surgery improves bone density in patients with parathyroid disease. Improvement in serum bone turnover markers is seen following parathyroidectomy. The association with bone density needs further evaluation in larger studies.
Malignant bone tumours of the foot
Authors: Yang P , Evans S , Bali N , Ramasamy A , Evans R , Stevenson J , Jeys L , Grimer R 
Published: August 2017

Introduction Malignant osseous foot tumours are uncommon. Their oncological outcomes have been poorly documented in the literature so far. The aim of this study was to establish the incidence and to evaluate the oncological outcomes of such patients. Methods Our large orthopaedic oncology database was used to review 70 malignant osseous foot tumour patients. Results The age at diagnosis of malignant osseous foot tumours demonstrated a bimodal distribution peaking in the second and eighth decades of life. Overall, 55 primary malignant bone tumours of the foot (79%) were identified. The median duration from onset of symptoms to diagnosis was 52 weeks (interquartile range [IQR]: 17–104). Eight primary tumours (15%) underwent an accidental excision (ie intralesional excision of a malignant bone tumour where some of the tumour has been left behind, also known as a ‘whoops procedure’) prior to referral to our unit. Forty-six patients (84%) underwent surgery overall and thirteen of these developed recurrence or metastases. Seven of eight patients with a previous accidental excision underwent amputation. Fifteen osseous metastatic foot lesions were identified. The median length of foot symptoms to diagnosis was 24 weeks (IQR: 20–36 weeks). The median time to death following diagnosis of osseous foot metastases was 20.1 months (IQR: 11.3–27.8 months). Conclusions A high index of suspicion and awareness of clinical features of malignant osseous foot tumours are both essential to avoid diagnostic delays. Amputation is associated with a respectable outcome for patients who have undergone previous accidental excisions.
Pyomyositis of the pectineus muscle in an adolescent male
Authors: Hiddema J , Hassan S , Mangat N , Siddiqui N 
Published: August 2017

The ‘irritable hip’ continues to pose a challenge for clinicians. Even with predictive clinical algorithms, decision making can be difficult. Emergency treatment is required if septic arthritis is suspected. Other differential diagnoses such as transient synovitis, pyomyositis of the pelvic girdle muscles and osteomyelitis must be considered in order to help guide appropriate investigations and allow early treatment. We report the case of a 13-year-old boy presenting to our institution with an acutely painful left hip but still able to weight bear. Despite a fever and raised inflammatory markers, the clinical examination did not correspond to that of an infected hip joint. Urgent magnetic resonance imaging (MRI) confirmed pyomyositis of the pectineus muscle. To our knowledge, this is the first reported case in the literature. The child was treated with seven days of intravenous antibiotics. There was a good clinical response as well as normalisation of the C-reactive protein level and white cell count. The patient was discharged home with a further week of oral antibiotics. Follow-up MRI at two weeks demonstrated a dramatic reduction in the inflammation of the pectineus. At the clinic follow-up appointment, the child was asymptomatic and back to normal function. Pyomyositis is typically found in tropical areas but its rates in temperate climates have been rising. It usually affects large groups of muscles such as the quadriceps and gluteal muscles. MRI is the gold standard investigation. If diagnosed early, the condition can be treated successfully with intravenous antibiotics alone. Given the widespread availability of MRI, we recommend its increased use to distinguish between pyomyositis and other paediatric hip pathologies.
The Adjective as Ideology Indicator in Postwar School Grammars of the Greek Ethnic Minority Schools in Albania
Authors: Jani Jani 
Published: August 2017

Abstract
This presentation aims to a primary approach to the role the postwar textbooks of grammar of the Greek language had and were intended for the National Greek Minority in Albania. We are not referring to grammar acknowledgement, but to the part of the education process that has to do with the conformation of children and the character formation of character and consciences. It is obvious that every educational system is part of an administrative state apparatus controlled by socio-political forces. So the new political system that was installed in the country after the 1945, settled as a key priority the conformation of the new man with communist ideals. These objectives were primarily reflected in textbooks. In our presentation we analyze the role of language structures in the implementation of this objective. Within the language structures and language options of speakers, various social or ideological messages are included. We focus our analysis on the “adjective”, as we consider it to have largely registered the ideology of a society or a political system.
The Concept of the Servant of God and Isaiah’s Connection: A Politico-Theological Response to Recession
Authors: Obielosi Dominic C. 
Published: August 2017

Abstract
To say that Nigeria is yet to be met with great and good news of feats and development since after independence is not an exaggeration. The true face is that the little the colonial masters did before they handed over is what we have enjoyed. Now most of them have dilapidated. There is no sign of a better future. One wonders what happened to Nigerian Telecommunications. There was a time we have phone boots on the streets. With a coin one can conveniently make calls. Fax machines were available in offices for private and public use. One can even send a telegram. To say that GSM and internet replaced them is an escapist manoeuvre. Think of Lagos Main Land Bridges, Niger Bridge, trains etc. People attribute the cause to corruption. The leaders are singled out as corrupt. But who are the leaders? People tend to limit their searchlight to the president, Senators and governors. Evidently, they are not the managers of parastatals. They are not the law enforcement agencies etc. Yet, the truth is still obvious that a good leader can always push his subjects to a set vision and mission. What Nigeria needs is a servant leader. This paper is structured to examine in the main, the concept of the Servant of God, a servant leader as envisioned by Prophet Isaiah in what is popularly known as the Servant Songs. It is the belief of the researcher that a leader of such calibre is what Nigeria needs even in her recession to move forward.
Effect of the duration of high air temperature on cow’s milking performance in moderate climate conditions
Authors: Herbut Piotr , Angrecka Sabina , Godyń Dorota 
Published: August 2017

Abstract
The main aim of the presented investigation was to determine the effect of the air thermal conditions variability on cow’s milking performance in summer in a moderate climate. The analyses covered the summer months of 2012-2013 (June-September) and shorter, several-day periods characterized by the times of elevated or high air temperatures and by the declines and increases in milking performance. The research was conducted in a free stall barn for Holstein-Friesian cows. The study showed that the thermoneutral temperature for high yielding cows decreases gradually with the registered increasingly warmer summer periods. The decreases in milk yield already commence at an air temperature equal to 20°C and also depend on the dairy cattle sensitivity. July and August, with a high number of hot days, caused that in September the cows responded faster to a worsening of thermal conditions and the decline in milking performance happened almost simultaneously with the air temperature change, at milking yield recovery after the period of 3-4 d (r=-0.84, P<0.04). The percent duration in the individual temperature ranges which caused a decrease of milk yield was also determined. In June, and at the beginning of July, this was 90% of the time with temperatures above 20°C, and simultaneously 45% above 25°C occurred to milking performance decrease (r=-0.89, P<0.02). In September, this was only 30% of the time with temperatures above 20°C (r=-0.91, P<0.01).
Dose-Dependent Influence of Dietary Cu-Glycine Complex on Bone and Hyaline Cartilage Development in Adolescent Rats
Authors: Tomaszewska Ewa , Dobrowolski Piotr , Kwiecień Małgorzata , Winiarska-Mieczan Anna , Tomczyk Agnieszka , Muszyński Siemowit , Gładyszewska Bożena 
Published: August 2017

Abstract
Administration of the amino acid copper (Cu) complex ensures higher Cu bioavailability through enhanced absorption from intestine and decreases the dietary Cu level, compared to the recommended Cu dose. The objective of this study was to investigate the effect of Cu-low diet on the bone development in adolescent rats. Male rats at the age of 6 weeks were used in the 12-week experiment. The control diet provided the required Cu level from sulfate (S-Cu) and other diets were supplemented with Cu as a glycine complex (Cu-Gly) at 25%, 50%, 75%, and 100% of daily requirement. After the 12-week treatment, rats from the Cu-Gly100 group were heavier, compared to the other groups. The copper and calcium plasma and bone concentrations of the rats in the groups treated with the organic form of Cu (irrespective of its dose) was similar to the control values noted in the rats administered with S-Cu. A decrease in the femur weight and length was observed in the Cu-Gly75 and Cu-Gly50 groups. Cu-Gly increased the cross section area, mean relative wall thickness, and cortical index only in the Cu-Gly75 group. A decrease in the ultimate strength, elastic stress, and ultimate stress was noted in the Cu-Gly100 and Cu-Gly75 groups. In the Cu-Gly50 group, a decrease in the ultimate stress and an increase in the maximal elastic strength and bending moment were noted. Adolescent rats treated with Cu-Gly at a Cu-deficient level exhibited a dose-dependent strongly osteoporotic cancellous bone. Lower proteoglycan content was found in groups fed the Cu-low diet. In the control rats supplemented with S-Cu, there was no evident gradient in safranin O staining. It is difficult to indicate which dose of the Cu-Gly complex among the investigated Cu-poor diet exerted a positive effect on bone metabolism. It appears that the use of this Cu-Gly complex at a significantly reduced dose than S-Cu at the recommended dose did not inhibit the development of bone and hyaline cartilage in adolescent rats.
Contributions to the thermophilous fringe communities (Trifolio-Geranietea sanguinei) in Belarus
Authors: Iakushenko Dmytro 
Published: August 2017

Abstract
The paper presents the results of phytosociological studies on thermophilous forb fringes conducted in August, 2012, in Belarus. A dataset of 31 relevés is analyzed, 3 associations and 1 community of 3 alliances and 3 orders of the class Trifolio-Geranietea sanguinei T. Müller 1962 are distinguished. For the first time for this area, the association Galio borealis- Geranietum sanguinei Tüxen 1967 is reported and characterized. The results of syntaxonomical interpretation are discussed based on chorological data.
Digital Technology as a Challenge to European Contract Law
Authors: Grundmann Stefan , Hacker Philipp 
Published: August 2017

AbstractOffering an overview of the interactions between digital technologies and contract law, we identify three pillars in this architecture: the regulatory framework; digital interventions over the life cycle of the contract; and digital objects of contracting. The regulatory framework, which itself may draw on digital technology to effectively pursue its ends, shapes, and is shaped by, the other two pillars. More specifically, on the one hand, we show how four key technologies – digital platforms, Big Data analytics, artificial intelligence, and blockchain – are being used at different stages of the contractual process (from the screening for contractual partners to formation, enforcement and interpretation) and engender novel market dynamics that, in many instances, necessitate regulatory responses. On the other hand, digitally facilitated contracting increasingly relates to digital content as the object of the contract; however, while this area has notably been the subject of the proposed Directive on Contracts for the Supply of Digital Content and thus has received some first ‘European structure’, we argue that a number of important blind spots remain that fail to be addressed by the directive. All in all, the use of digital technology in contracting will likely reinforce an adaptive, relational view and practice of contracting. This increased fluidity engenders a vast potential for preference-conforming, time-sensitive contracts; however, to the extent that it also mirrors novel asymmetries of information and power, the ordering mechanisms of the law may simultaneously be more needed than ever.