bluuebunny/crossref_metadata_2025 huggingface dataset:
Relevant Insertion Site Anatomy of the Conventus Distal Radius System
Authors: Duncan Jacob , Trzeciak Marc
Published: March 2017

Background: The Conventus Distal Radius System (DRS) is an intramedullary fixation scaffold inserted into the lateral aspect of the distal radius. The purpose of this study was to identify insertion site anatomy to illustrate risks associated with the minimally invasive nature of radial-sided implant application. Methods: Ten cadavers were utilized. Using fluoroscopy, the 1.1-mm Kirschner wire and template was introduced per manufacturer’s guidelines, access guide assembled, and dissection carried out to the superficial radial nerve (SRN) with preservation of the native location. The access guide marked the insertion location for the side-cut drill. This point was measured in relationship to structures nearby, including the SRN, brachioradialis (BR), lateral antebrachial cutaneous nerve (LABCN), and radial styloid (RS). Results: The large guide contacted the SRN in 4 of 10 cadavers and was volar to it in 6 of 10. When volar, the mean distance was 1.7 mm. The tip of the RS to the large access guide averaged 44.5 mm. The small guide contacted the SRN in 2 of 10, was volar to it in 4 of 10, and between the bifurcation in 4 of 10. When volar, the distance averaged 3.25 mm. When bifurcated, the distance from the small guide to both the dorsal and volar branches was 3.5 mm. The distance from the RS to the small guide averaged 37.8 mm. The LABCN was found in the field of dissection in 4 of 10 cadavers. Conclusions: Several structures are at risk during insertion of the Conventus DRS; thus, knowledge of the relevant anatomy of this minimally invasive approach is crucial to optimize outcomes and patient satisfaction, and to avoid nerve injury.
Development and implementation of a trapeziectomy rehabilitation protocol
Authors: Henstridge Lucy
Published: March 2017

Introduction

The purpose of this study was to evaluate a newly developed trapeziectomy rehabilitation protocol. Variability in trapeziectomy rehabilitation protocols and the arrival of new surgeons in our hospital required a uniform protocol.

Methods

Fifty hands in 44 patients (32 women/12 men) were immobilised for 4 weeks in a plaster cast after a trapeziectomy. A carpometacarpal splint immediately followed for 2 weeks, taken off for exercises and self-care. Patients were assessed preoperatively and at 3, 6 and 12 months using: a pain visual analogue scale (VAS), grip, tip pinch and lateral pinch strength, goniometry, the Modified Kapandji Index (MKI), the Quick Disabilities of the Arm, Shoulder and Hand questionnaire (Q-DASH, Dutch version) and the Short Form 36 (SF-36, Dutch version). At 3, 6 and 12 months, patient’s satisfaction with the operation was rated on a satisfaction VAS.

Results

The correlation between pain and patient satisfaction was significant ( ρ = −0.80). VAS pain improved from a median of 75 mm preoperatively to 20 mm at 12 months ( p < 0.01). The Q-DASH improved from a median of 48 preoperatively to 20 at 12 months ( p < 0.01). Median grip, tip pinch and lateral pinch strength increased at 12 months by 19%, 8% and 24%, respectively from the baseline measurement.

Conclusions

Patients participating in a standardised protocol after trapeziectomy with 4 weeks immobilisation demonstrated improvements in pain, Q-DASH, grip strength, tip pinch and lateral pinch grip. They were satisfied with the results. Further research into the optimal immobilisation time after trapeziectomy surgery is needed.
Shifting Landscapes: The Impact of Centralized and Decentralized Nursing Station Models on the Efficiency of Care
Authors: Fay Lindsey , Carll-White Allison , Schadler Aric , Isaacs Kathy B. , Real Kevin
Published: March 2017

Objective:

The focus of this research was to analyze the impact of decentralized and centralized hospital design layouts on the delivery of efficient care and the resultant level of caregiver satisfaction.

Background:

An interdisciplinary team conducted a multiphased pre- and postoccupancy evaluation of a cardiovascular service line in an academic hospital that moved from a centralized to decentralized model. This study examined the impact of walkability, room usage, allocation of time, and visibility to better understand efficiency in the care environment.

Method:

A mixed-methods data collection approach was utilized, which included pedometer measurements of staff walking distances, room usage data, time studies in patient rooms and nurses’ stations, visibility counts, and staff questionnaires yielding qualitative and quantitative results.

Results:

Overall, the data comparing the centralized and decentralized models yielded mixed results. This study’s centralized design was rated significantly higher in its ability to support teamwork and efficient patient care with decreased staff walking distances. The decentralized unit design was found to positively influence proximity to patients in a larger design footprint and contribute to increased visits to and time spent in patient rooms.

Conclusion:

Among the factors contributing to caregiver efficiency and satisfaction are nursing station design, an integrated team approach, and the overall physical layout of the space on walkability, allocation of caregiver time, and visibility. However, unit design alone does not solely impact efficiency, suggesting that designers must consider the broader implications of a culture of care and processes.
Wetland, Forest, and Open Paddy Land Are the Key Foraging Habitats for Germain’s Swiftlet (Aerodramus inexpectatus germani) in Southern Thailand
Authors: Petkliang Nutjarin , Gale George A. , Brunton Dianne H. , Bumrungsri Sara
Published: March 2017

Germain’s swiftlets ( Aerodramus inexpectatus germani) are farmed regularly in Southeast Asia and produce highly valuable nests for which there is an increasing demand. Some populations of this species are thought to be decreasing, but little is known about the habitat used by swiftlets for foraging. Here, we focused on this swiftlet’s foraging habitat selection and describe their daily and seasonal variations in habitat use. We predict that the prey capture attempts would be highest during twilight periods of each day, but that overall capture rates would vary with season and habitat type. Prey capture attempts at different times of the day and seasons in five different habitats were investigated and compared to flying insect availability (estimate as biomass). For each habitat, insects were trapped immediately 5–10 m above vegetation levels (i.e., tree canopy and open paddies) and 0–5 m above water surfaces in water body habitat. The highest foraging intensity occurred over water bodies, forest, and open paddy land; all of which contained high numbers of major prey insects (Hymenoptera, Diptera, and Hemiptera). Foraging during the wet season was at a greater intensity than during the dry season which was associated with increased insect availability. This suggested that food supply in each habitat type, time of day, and season influenced the bird’s foraging habitat use. To conserve populations of this swiftlet, it is therefore important to protect wetlands, forest areas, and open paddy land to support natural insect prey within the foraging range of local swiftlets.
Species Richness and Biomass of Epiphytic Vegetation in a Tropical Montane Forest in Western Panama
Authors: Gómez González Diana C. , Rodríguez Quiel Calixto , Zotz Gerhard , Bader Maaike Y.
Published: March 2017

In tropical montane forests epiphytes represent a substantial proportion of biodiversity and green biomass, particularly where fog occurs almost daily. Epiphytes play important ecological roles in these ecosystems, for example, in forest hydrology and in amplifying arthropod biodiversity, but quantitative assessments of epiphytic biomass and species diversity are rare. Such data are important, however, for a better understanding on their ecological roles and as a baseline for detecting ecological change due to climate or land-use changes. In a tropical lower montane cloud forest (c. 1,150 m above sea level) in Panama, we identified and weighed all epiphytic matter, which includes vascular plants, bryophytes, lichens, and dead organic matter from the trunks of 22 trees varying in diameters at breast height and 28 canopy branches. Additionally, we collected epiphytic matter in the understory in 22 plots of 2 × 2 m. A total of 155 species of vascular epiphytes, hemiepiphytes, and nomadic vines were found. Orchidaceae were by far the most species-rich family, followed by Araceae and Bromeliaceae. The vertical distribution of these species in the forest showed species-specific vertical preferences, but species numbers varied little in undergrowth, trunks, and tree crowns. Epiphytic matter was positively related to tree size, and we used tree-size data inventory data from a nearby 1-ha plot to extrapolate our findings to the plot level. The resulting estimate of 16,439 kg ha−1 for total epiphytic matter and 6,214 kg ha−1 for living plants, the latter representing about 2% of aboveground forest biomass.
Outcome of Asymptomatic Osteochondritis Dissecans of the Capitellum in Adolescent Baseball Players
Authors: Matsuura Tetsuya , Iwame Toshiyuki , Suzue Naoto , Sairyo Koichi
Published: March 2017

Objectives:

Osteochondritis dissecans (OCD) of the capitellum is a well-recognized cause of elbow pain and disability in adolescent baseball players. OCD is classified into three different stages based on AP radiographs of the elbow in 45°flexion. Stage I was characterized by radiolucent areas. In stage II, nondisplaced fragments were present. Loose bodies and sclerotic change indicated stage III. Matsuura et al performed the conservative treatment on 101 patients with stage I or II lesions. Conservative treatment consisted of discontinuation of heavy use of the elbow for at least 6 months. Of 101 patients, 84 were diagnosed as stage I, with a mean age of 11.3 years and 17 were in stage II, with a mean age of 13.9 years. Of the 84 patients in stage I, healing was observed in 90.5%. In stage II, the incidence of healing decreased to 52.9%. Mean period required for healing was 14.9 months in stage I and 12.3 months in stage II. These results suggest that conservative treatment is recommended for the early stage lesions. However, little is known about the outcome of conservative treatment for asymptomatic OCD patients. The purpose of this study was to investigate 2year follow-up outcome of asymptomatic OCD in adolescent baseball players.

Methods:

We retrospectively reviewed 33 baseball players aged 9-12 years (mean, 11.3 years) with asymptomatic OCD. There were 23 stage I lesions and 10 stage II lesions. We recommended the conservative treatment including stop throwing to all the players. Sixteen players (48.5%) agreed to our advice. The remaining 17 players did not follow the authors’ advice. Twelve players (36.4%) changed position or throwing side and 5 players (15.1%) did not change throwing level. Two years later, subjects were evaluated clinically and radiographically. Radiological outcome was divided into 3 types, complete repair, incomplete repair, and failure.

Results:

Stop throwing produced complete repair in 93.7%, incomplete repair in 6.3%, and none of the failure. Changing position or throwing side produced complete repair in 41.7%, incomplete repair in 25%, and failure in 33.3%. Not changing throwing level produced complete repair in 20%, none of incomplete repair, and failure in 80% ( Table 1 ). Players with complete or incomplete repair had not any symptom at the follow-up. On the other hand, all the players with failure had symptom such as pain and/or catching. Six of 8 players (75%) with symptom needed operation. [Table: see text]

Conclusion:

Even in the asymptomatic early stage OCD, it is desirable to stop throwing until the healing is observed.
How I treat autoimmune hemolytic anemia
Authors: Go Ronald S. , Winters Jeffrey L. , Kay Neil E.
Published: March 2017

Autoimmune hemolytic anemia (AIHA) is an uncommon entity that presents diagnostic, prognostic, and therapeutic dilemmas despite being a well-recognized entity for over 150 years. This is because of significant differences in the rates of hemolysis and associated diseases and because there is considerable clinical heterogeneity. In addition, there is a lack of clinical trials required to refine and update standardized and evidence-based therapeutic approaches. To aid the clinician in AIHA management, we present four vignettes that represent and highlight distinct clinical presentations with separate diagnostic and therapeutic pathways that we use in our clinical practice setting. We also review the parameters present in diagnostic testing that allow for prognostic insight and present algorithms for both diagnosis and treatment of the AIHA patient in diverse situations. This is done in the hope that this review may offer guidance in regard to personalized therapy recommendations. A section is included for the diagnosis of suspected AIHA with negative test results, a relatively infrequent but challenging situation, in order to assist in the overall evaluation spectrum for these patients.
Video scene identification and classification for user-tailored QoE in GEO satellites
Authors: Koutsakis Polychronis , Spanou Irene , Lazaris Aggelos
Published: March 2017

Satellite networks offer an efficient alternative where no terrestrial networks are available, and can offer a cost effective means of transferring data. Numerous proposals have addressed the problem of resource allocation in geostationary (GEO) satellites, and have been evaluated via various performance metrics related to user Quality of Service (QoS). However, ensuring that on average the users’ QoS requirements are satisfied does not guarantee the satisfaction of their individual Quality of Experience (QoE) requirements, especially in the case of bursty video users. This paper proposes the use of video scene identification and classification for traffic modeling at the scene level in order to improve resource allocation and user QoE in GEO satellite networks. The proposed call admission control and medium access control framework makes decisions based on available bandwidth, long-term and short-term user satisfaction and the revenue that the provider may gain.
Neutrophil, quo vadis?
Authors: Jablonska Jadwiga , Granot Zvi
Published: March 2017

Neutrophils were traditionally considered to be a homogeneous population of terminally differentiated cells with very defined roles in inflammation and fighting infections. However, recent advances in neutrophil research challenge this limited view and demonstrate that neutrophils are highly versatile, play different roles in various pathologic scenarios, and are heterogeneous. With this, it is becoming clear that one term—“neutrophil”—is too general, and more precise nomenclature is urgently required. In this mini review, we discuss the knowns and unknowns in neutrophil terminology and highlight the critical questions that should be addressed for the establishment of clear neutrophil nomenclature.
Ten-Year Progression-Free and Overall Survival in Patients With Unresectable or Metastatic GI Stromal Tumors: Long-Term Analysis of the European Organisation for Research and Treatment of Cancer, Italian Sarcoma Group, and Australasian Gastrointestinal Trials Group Intergroup Phase III Randomized Trial on Imatinib at Two Dose Levels
Authors: Casali Paolo G. , Zalcberg John , Le Cesne Axel , Reichardt Peter , Blay Jean-Yves , Lindner Lars H. , Judson Ian R. , Schöffski Patrick , Leyvraz Serge , Italiano Antoine , Grünwald Viktor , Pousa Antonio Lopez , Kotasek Dusan , Sleijfer Stefan , Kerst Jan M. , Rutkowski Piotr , Fumagalli Elena , Hogendoorn Pancras , Litière Saskia , Marreaud Sandrine , van der Graaf Winette , Gronchi Alessandro , Verweij Jaap ,   on behalf of the European Organisation for Research and Treatment of Cancer Soft Tissue and Bone Sarcoma Group, Italian Sarcoma Group, and Australasian Gastrointestinal Trials Group
Published: March 2017

Purpose

To report on the long-term results of a randomized trial comparing a standard dose (400 mg/d) versus a higher dose (800 mg/d) of imatinib in patients with metastatic or locally advanced GI stromal tumors (GISTs).

Patients and Methods

Eligible patients with advanced CD117-positive GIST from 56 institutions in 13 countries were randomly assigned to receive either imatinib 400 mg or 800 mg daily. Patients on the 400-mg arm were allowed to cross over to 800 mg upon progression.

Results

Between February 2001 and February 2002, 946 patients were accrued. Median age was 60 years (range, 18 to 91 years). Median follow-up time was 10.9 years. Median progression-free survival times were 1.7 and 2.0 years in the 400- and 800-mg arms, respectively (hazard ratio, 0.91; P = .18), and median overall survival time was 3.9 years in both treatment arms. The estimated 10-year progression-free survival rates were 9.5% and 9.2% for the 400- and 800-mg arms, respectively, and the estimated 10-year overall survival rates were 19.4% and 21.5%, respectively. At multivariable analysis, age (< 60 years), performance status (0 v ≥ 1), size of the largest lesion (smaller), and KIT mutation (exon 11) were significant prognostic factors for the probability of surviving beyond 10 years.

Conclusion

This trial was carried out on a worldwide intergroup basis, at the beginning of the learning curve of the use of imatinib, in a large population of patients with advanced GIST. With a long follow-up, 6% of patients are long-term progression free and 13% are survivors. Among clinical prognostic factors, only performance status, KIT mutation, and size of largest lesion predicted long-term outcome, likely pointing to a lower burden of disease. Genomic and/or immune profiling could help understand long-term survivorship. Addressing secondary resistance remains a therapeutic challenge.
Numb regulates somatic cell lineage commitment during early gonadogenesis in mice
Authors: Lin Yi-Tzu , Barske Lindsey , DeFalco Tony , Capel Blanche
Published: March 2017

During early gonadogenesis, proliferating cells in the coelomic epithelium (CE) give rise to most somatic cells in both XX and XY gonads. Previous dye-labeling experiments showed that a single CE cell could give rise to additional CE cells and to both supporting and interstitial cell lineages, implying that cells in the CE domain are multipotent progenitors, and suggesting that an asymmetric division is involved in the acquisition of gonadal cell fates. We found that NUMB is asymmetrically localized in CE cells, suggesting that it might be involved. To test this hypothesis, we conditionally deleted Numb on a Numb-like mutant background just prior to gonadogenesis. Mutant gonads showed a loss of cell polarity in the surface epithelial layers, large interior cell patches expressing the undifferentiated marker LHX9, and loss of differentiated cells in somatic cell lineages. These results indicate that NUMB is necessary for establishing polarity in CE cells, and that asymmetric divisions resulting from CE polarity are required for commitment to differentiated somatic cell fates. Surprisingly, germ cells, which do not arise from the CE, were also affected in mutants, which may be a direct or indirect effect of loss of Numb.
Factors associated with awareness about syphilis and gonorrhoea among women in Bangladesh
Authors: Hossain Mosharaf , Islam Rafiqul , Sarkar Aziza Sultana Rosy
Published: March 2017

Background: Currently, syphilis and gonorrhoea among women is a topic great concernin Bangladesh. To date, little is known in the existing literature regarding its prevalence, and the current level of syphilis and gonorrhoea awareness among women with regard to prevention is inadequate. This research aims to identify factors associated with awareness of syphilis and gonorrhoea among women in Bangladesh. Methods: Data were collected from women by the Bangladesh Demographic and Health Survey (BDHS) 2011 as a cross-sectional study. The seven divisions surveyed were Dhaka, Rajshahi, Rangpur, Chittagong, Barisal, Khulna and Sylhet. The number of women in the seven divisions totalled 17,842. The chi-squared test and a logistic regression model were used to determine the social-demographic factors associated with awareness about syphilis and gonorrhoea among women in Bangladesh. Results: The rate of awareness about syphilis and gonorrhoea among women in Bangladesh was 13.3% and 15.7%, respectively. The chi-squared test and logistic analysis demonstrated that there is a significant association between the awareness of syphilis and gonorrhoea with the respondents’ age, location of the respondents’ house, educational level of the respondent, socioeconomic status, geographic region, and respondents that listened to the radio and watched TV. Conclusions: There is an essential need to expand the learning and teaching program in Bangladesh regarding syphilis and gonorrhoea, mainly among younger women (<25 years) in all topographical and rural areas. Advertising drives and mass broadcasting programs can be used to increase knowledge within societies, particularly among women. In addition, the low awareness of syphilis and gonorrhoea indicates that prevention interventions are required among women.
FORMAÇÃO DE PROFESSORES DOS PRIMEIROS ANOS EM ARTICULAÇÃO COM O CONTEXTO DE PRÁTICA DE ENSINO DE MATEMÁTICA
Authors: Da Ponte João Pedro , Mata-Pereira Joana , Quaresma Marisa , Velez Isabel
Published: March 2017

Este artículo se centra en un proceso de formación docente realizado en una perspectiva curricular de la enseñanza exploratoria, que valora la orientación para la práctica y la reflexión colectiva entre los participantes. Su objetivo es analizar los cambios que los maestros refieren sentir en sus perspectivas y prácticas de enseñanza y la forma en que miran la formación llevada a cabo. El marco teórico tiene como sustento una concepción de práctica profesional que asume el papel central de las nociones de tarea y comunicación y una perspectiva sobre la construcción de dispositivos formativos enmarcados en el abordaje exploratorio. Los participantes son 19 maestros de 1º a 6º ano de enseñanza. La recolección de datos es a través de registros de bitácoras diarias, un cuestionario de respuestas abiertas y entrevistas. Los resultados muestran que, como consecuencia del trabajo realizado, los profesores comenzaron a valorar la enseñanza exploratoria y las discusiones colectivas y a asumir una alta expectativa sobre las capacidades de los estudiantes. En cuanto a la formación destacan la conexión con su práctica y los momentos de intercambio de experiencias.
Optimal Markdown Pricing and Inventory Allocation for Retail Chains with Inventory Dependent Demand
Authors: Smith Stephen A. , Agrawal Narendra
Published: March 2017

We analyze how inventory dependence of demand affects the optimal pricing and distribution of inventory across multiple retail locations. Our problem formulation corresponds to the typical markdown management decisions in a retail chain. The solution methodology determines the optimal combinations of three important operational levers—pricing, inventory allocation, and store consolidation. Inventory dependence causes the optimal price trajectory to decrease over time as the current on-hand inventory decreases. The optimal inventory allocation shifts more inventory to the larger stores as the inventory effect becomes stronger. Solution methodologies are also developed for the case of optimal constant prices, which leads to the same optimal inventory allocations. If all stores have the same seasonal variations and the inventory is allocated optimally, then all stores have identical price trajectories. Optimal consolidation of the inventory to a subset of the stores is also determined. Consolidation of inventory to a subset of stores can be beneficial even when there are no fixed costs of stocking a store. Using some typical parameter values for retail items, our calculations show that significant benefits can result from taking the inventory effect into account in pricing, inventory allocation, and store consolidation decisions.

The online appendix is available at https://doi.org/10.1287/msom.2016.0609 .
Innovation Outcomes in a Distributed Organization: Intrafirm Mobility and Access to Resources
Authors: Choudhury Prithwiraj
Published: March 2017

Prior research has established a relation between intrafirm mobility and innovation outcomes at distributed organizations. The literature has also uniformly agreed on the mechanism underlying this relationship: the sharing of tacit knowledge and recombination of ideas that occurs because of intrafirm mobility. But a second mechanism may also be at work: intrafirm mobility might help distant employees secure access to resources for their innovative projects. Using unique data on travel, employment, and patenting for 1,315 inventors at the Indian research and development (R&D) center of a Fortune 50 multinational, I find that intrafirm mobility in the form of short-duration business trips from a distant R&D location to headquarters is positively related to higher subsequent patenting at the individual level. I also find mobility immediately prior to meetings at which R&D funds are most likely to be disbursed to be related to higher subsequent patenting. This study sheds new light on how intrafirm mobility and possible face-to-face interactions with those who allocate resources might affect innovation outcomes and the matching of resources to individuals within a distributed organization.

The online appendix is available at https://doi.org/10.1287/orsc.2017.1121 .
Is your address hotchick@gmail.com?
Authors: Ireland Bob
Published: March 2017

Professor Bob Ireland advises on how best to protect your professionalism in the multi-faceted world of online communication
Take the plunge
Authors: Coate Michaela
Published: March 2017

Dental nurse Michaela Coate reveals how reaching out to those who need us most is made easy with the support of a national oral health charity scheme
Early performance-based and patient-reported outcomes of a contemporary taper fit bone-conserving short stem femoral component in total hip arthroplasty
Authors: Hossain F. , Konan S. , Volpin A. , Haddad F. S.
Published: March 2017

Aims

The aim of this study was to compare early functional and health related quality of life outcomes (HRQoL) in patients who have undergone total hip arthroplasty (THA) using a bone conserving short stem femoral component and those in whom a conventional length uncemented component was used. Outcome was assessed using a validated performance based outcome instrument as well as patient reported outcome measures (PROMs).

Patients and Methods

We prospectively analysed 33 patients whose THA involved a contemporary proximally porous coated tapered short stem femoral component and 53 patients with a standard conventional femoral component, at a minimum follow-up of two years. The mean follow-up was 31.4 months (24 to 39). Patients with poor proximal femoral bone quality were excluded. The mean age of the patients was 66.6 years (59 to 77) and the mean body mass index was 30.2 kg/m2(24.1 to 41.0). Outcome was assessed using the Oxford Hip Score (OHS) and the University College Hospital (UCH) hip score which is a validated performance based instrument. HRQoL was assessed using the EuroQol 5D (EQ-5D).

Results

There were no major peri-operative complications. There was no difference in the mean post-operative OHS, EQ-5D or function subscale of the UCH hip scores between the two groups. The mean pre-operative OHS and EQ-5D scores improved significantly (all p <  0.001). The mean functional component of the UCH hip score at final follow-up was 42.5 and 40.6 in the short stem and conventional stem groups, respectively. There was no statistically significant difference between the groups (p = 0.42). A total of seven patients (21.2%) in the short stem group and nine (16.98%) in the conventional group achieved a ceiling effect using the OHS; none did using the function subscale of the UCH hip score.

Conclusion

The proximally porous coated tapered short stem femoral component achieves comparable short-term functional outcomes when compared with a conventional longer stem uncemented femoral component when THA is undertaken in patients with good bone quality. Cite this article: Bone Joint J 2017;99-B(4 Supple B):49–55.
Allergic reaction to acrylic resin in a patient with a provisional crown: case report
Authors: Mesquita Alfredo Mikail Melo , Silva Juliano H M , Kojima Alberto Noryuki , Moura Renata Vasconcelos , Giovani Elcio Madaglena , Özcan Mutlu
Published: March 2017

Acrylic resins are widely used in dentistry, especially in orthodontics and prosthetics. Patients: this article reports the case of a leukodermic 33-year-old male who reported discomfort and pain due to an erythematous lesion in the first left premolar after the placement of an acrylic resin temporary restoration. Discussion: The signs and symptoms presented by the patient and his report of visiting the rural countryside generated concern regarding the possible diagnosis, which led to a more invasive biopsy to differentiate allergic inflammation from a paracococcidioid mycosisIncisional. Biopsy revealed a chronic inflammatory process. Conclusion: the pathology was caused by contact with methyl methacrylate-based provisional acrylic resin.
Radiographic and scanning electron microscopic assessment of root canal filling remnants after endodontic re-instrumentation
Authors: Santos Luciane Geanini Pena , Felippe Wilson Tadeu , Souza Beatriz Dulcineia Mendes , Konrath Andrea Cristina , Cordeiro Mabel Mariela Rodríguez , Felippe Mara Cristina Santos
Published: March 2017

Objective: Failures in endodontic treatment may occur by several reasons. Endodontic retreatment is an interesting alternative to manage this clinical problem. However, it is not possible to completely remove the root canal filling by any current retreatment technique. The aim of this study was to evaluate the presence of residual root canal filling materials after endodontic re-instrumentation. Material and Methods: Sixty extracted anterior human teeth were prepared by step-back technique with Flexofiles, K-files and Gates-Glidden (GG) burs. Between the use of each file or bur, root canals were irrigated with sodium hypochlorite (NaOCl). Smear layer was removed by irrigation with ethylenediaminetetraacetic acid and NaOCl. After drying with paper points the root canals were randomly divided into 5 groups (n = 12), according to filling material: Resilon cones/Real Seal sealer or gutta-percha cones and Endofill, Sealapex, AH Plus or MTA Fillapex sealers. After one week, root canal fillings were removed using Eucaliptol and K-files. Root canals were re-instrumented with K-files and GG burs sized larger than the first ones. The removal of root canal filling material was analyzed by radiography and scanning electron microscopy (SEM). Statistical analysis was performed using Binary Logistic Regression test (P < 0.05). Results: Radiographic and SEM analysis showed that material from the MTA Fillapex group was better removed than that from Endofill, Sealapex, AH Plus and Real Seal groups. Conclusion: After re-instrumentation, MTA Fillapex group showed less remnants into the root canals than Endofill, Sealapex, AH Plus and Real Seal groups. Residual material was most often found in the apical third.Keywords Dental radiography; Endodontic retreatment; Root canal filling materials; Scanning electron microscopy.
The dental alloys determine the choice of composite resins to be used.
Authors: Moris Izabela Cristina Maurício , Sakuma Matheus , Faria Adriana Cláudia Lapria , Macedo Ana Paula , Ribeiro Ricardo Faria , Rodrigues Renata Cristina Silveira
Published: March 2017

Objective: The aim of the present study was to evaluate wear resistance of two composites resins against alternative alloys. Material and Methods: Fifteen stylus tips samples of composite resin were obtained for each resin Z250 and charisma (CHA). Samples were divided into three groups according to the disk of alloy to be used as antagonist: Nickel-Chromium (Ni-Cr), Cobalt- Chromium (Co-Cr) and commercially pure titanium (cp Ti). Wear tests were performed at a speed of 265 cycles/min and distance of 10mm, in a total of 40,000 cycles. Before and after wear tests, samples were weighed and had their profile designed in an optical comparator to evaluate weight and height loss, respectively. Results: For weight and height loss, wear of Z250 was lower than CHA for Co-Cr antagonist, but greater for cp Ti. CHA presents a more regular surface without cracks and similar aspect for all antagonists. Z250 showed some cracks, mainly against cp Ti and Ni-Cr. Conclusion: Within the results of the present study, it was concluded that CHA is suitable against cp Ti, and Z250 for association with Co-Cr alloy while any composite resin can be used against Ni-Cr.KeywordsComposite resins; Dental alloys; Dental restoration wear.
Quality of bone repair in ovariectomized rats with bone lesions treated with phytotherapic and homeopathic Arnica montana
Authors: Silva Edmundo , Pereira Vanessa Fernandes , Vasconcellos Luana Marotta Reis , Oliveira Felipe Eduardo , Brandão Adriana Aigotti Haberbeck
Published: March 2017

Objective: National and international data show that in the next years the elder population tends to have an exponential increase becoming to be significantly higher than other ages.  Among the frequent diseases in the elderly, osteoporosis is a disease that decreases bone mass and deteriorates bone structure causing fragility and a high risk of fracture. This study aimed to evaluate the effect of phytotherapic and homeopathic Arnica montana on bone repair quality and its possible use in the treatment of bone fracture in patients with osteoporosis. Material and Methods: This experimental study was performed in Wistar adult female rats divided in 4 groups according to the following treatments: ovariectomized treated with homeopathic A. montana 6CH (OVZ 6CH); ovariectomized treated with phytotherapic A. montana (OVZ TM); ovariectomized with placebo (OVZ PL) and rats with sham surgery and placebo (Sham PL). In a period of 45 days after ovariectomy or sham surgery, all animals got a monocortical lesion. They were euthanized after 6, 12, 18 and 28 days and had the tibiae removed to evaluate dimensions and bone repair by radiographic density, biomechanical test and scanning electronic microscopy (SEM). Data were analyzed by ANOVA and TUKEY tests (p < 0.05). Results: Results showed that treatment with Arnica 6CH was better than Arnica TM considering bone  resistance and bone repair quality. Conclusion: This study concluded that treatment with homeopathic A. montana was more efficient than with phytotherapic Arnica in bone regeneration in rats with osteoporosis.KeywordsArnica montana; Homeopathy; Osteoporosis; Phytotherapy; Radiographic bone density.
Editorial
Authors: Gonçalves Sergio Eduardo De Paiva
Published: March 2017

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Potential use of germicides in vase solutions for gladiolus ‘White Friendship’
Authors: Casares Maria Carolina , Mattiuz Ben-Hur , Muniz Ana Correa , Mattiuz Claudia
Published: March 2017

Gladiolus (Gladiolus x hortulanus) is one of the most important crops for cut flowers worldwide, however having a short longevity. Usually, stems are harvested at the bud stage and need water and carbohydrates to support inflorescence development and to ensure flower quality. Vase solutions can supply these elements. However, sugars may benefit bacterial proliferation, which eventually can block xylem vessels. Bactericides potentially inhibit microorganism proliferation and new compounds are being tested constantly. This experiment was conducted to evaluate ‘White Friendship’ cut gladiolus performance in vase solutions with sodium dichloroisocyanurate dihydrate (Na-DCC), 8-hydroxyquinoline (8-HQ) or polymeric biguanide (PB). Inflorescences harvested at commercial maturity were placed in distilled water with 4% w/v of sucrose plus the germicides and kept under ambient conditions. Vase life, inflorescence postharvest development, fresh mass, membrane stability index and water relations were evaluated. There were no visual symptoms of toxicity in the treatments. The highest values of vase life, fully-open flowers, fresh mass and water balance were obtained with the Na-DCC treatment. Inflorescences treated with 8-HQ exhibited the highest values of solution uptake and wilting flowers. PB had a limited effect in gladiolus postharvest since the obtained results were similar to the sucrose alone. There was no effect of germicides on membrane stability index and its reduction was due to flower senescence progress only. Vase solution with Na-DCC plus sucrose improved water balance, increased open flowers, reduced wilting of flowers and fresh mass loss. Therefore, vase solutions with sucrose 4% w/v and Na-DCC enhance postharvest quality of cut gladiolus inflorescences.
Procalcitonin is not a marker of sterile inflammation in dogs after ovariohysterectomy
Authors: Gürbüz Hasan Oğuz , Ulutaş Pınar Alkım
Published: March 2017

CRP and WBC are the most widely used markers of inflammation in veterinary clinical diagnosis. Also, PCT is a specific APP marker of bacterial diseases in humans. This study evaluated the levels of PCT, CRP and WBC during postoperative monitoring of bitches undergoing ovariohysterectomy. Thirteen adult clinically healthy female crossbreed dogs aged between 7-24 months were used in the study. Ovariohysterectomy was performed via medial laparotomy using routine procedures. Blood samples were collected from the cephalic vein at 1, 4 and 7 days after surgery (post-op period). Mean serum concentration of PCT, CRP and WBC levels were increased after the surgery. CRP concentrations and WBC counts were increased significantly (p<0.001) on the first day after the operation and decreased to basal values. However, the PCT rise was not significant. CRP and WBC levels increased rapidly and decreased to normal values in dogs with ovariohysterectomy. CRP and WBC may be of help to determine the possible postoperative complications. Besides, aseptic surgical trauma did not affect PCT levels in dogs. Future studies are needed on canine PCT response focusing on specific bacterial infections.
Treatment of Patients with Risk Factors: Compliance and Adherence
Authors: Accetto Rok , Korenčan Simona , Radenković Sonja , Milenković Jelena
Published: March 2017

Hypertension and dyslipidemias represent important risk factors for the occurrence of cardiovascular diseases which have a high mortality rate. Although we know how to treat both, the success rate remains low. More than half of patients need at least two antihypertensive agents to achieve target blood pressure. Also, dyslipidemia frequently coexists and thus the burden of life-long pill taking is high and the adherence is low. We suggest treating both conditions simultaneously in a fixed combination. This would increase patients' adherence and compliance to therapy and therefore provide a more successful management of both conditions.
A Study of the Factors Related to Cardiopulmonary Resuscitation Physical Fatigue and the Quality of Resuscitation
Authors: Rad Mojtaba , Rad Mostafa
Published: March 2017

Effective chest compression is an important factor playing a key role in the cardiac arrest patient survival. An understanding of the factors causing an early physical fatigue can help to improve the quality of CPR operations in hospitals. Therefore, this study aimed to assess the factors relevant to the onset time of physical fatigue and resuscitation quality during cardiopulmonary resuscitation (CPR) provision by Iranian nurses.

The present cross-sectional study was performed on 194 subjects selected based on a stratified random sampling procedure from different hospital wards. The participants were required to perform CPR operations on a manikin. As they were performing CPR, the time and the quality of compressions were measured by a chronometer and visual analogue fatigue scale, respectively. The rescuers themselves reported the onset time of physical fatigue.

Statistical analyses run on the collected data revealed that the majority of participants experienced extreme physical fatigue after a two-minute CPR operation. Moreover, about 71.2% of the participants managed to provide compressions over five centimeters deep. Finally, the physical fatigue experienced by the participants was meaningfully correlated with the body weight, sex, university degree, and work place of the participants (p < 0.05). Since the findings of the present study showed that various factors including the sex, weight, height, university degree, and the work place of the rescuer were significantly correlated with the onset time of physical fatigue experienced during CPR operation, it is recommended that male nurses with greater height and weight be employed in the rescue teams in ICU wards. Moreover, it seems mandatory for the nurses currently working in such teams in hospitals to improve their physical fitness through doing aerobics on a regular basis so that they may experience less fatigue during their CPR operations in future.
Global Tungsten Demand and Supply Forecast
Authors: Dvořáček Jaroslav , Sousedíková Radmila , Vrátný Tomáš , Jureková Zdenka
Published: March 2017

An estimate of the world tungsten demand and supply until 2018 has been made. The figures were obtained by extrapolating from past trends of tungsten production from1905, and its demand from 1964. In addition, estimate suggestions of major production and investment companies were taken into account with regard to implementations of new projects for mining of tungsten or possible termination of its standing extraction. It can be assumed that tungsten supply will match demand by 2018. This suggestion is conditioned by successful implementation of new tungsten extraction projects, and full application of tungsten recycling methods.
Functional Dependence of Thermodynamic and Thermokinetic Parameters of Refrigerants Used in Mine Air Refrigerators. Part 1 – Refrigerant R407C
Authors: Nowak Bernard , Życzkowski Piotr , Łuczak Rafał
Published: March 2017

The authors of this article dealt with the issue of modeling the thermodynamic and thermokinetic properties (parameters) of refrigerants. The knowledge of these parameters is essential to design refrigeration equipment, to perform their energy efficiency analysis, or to compare the efficiency of air refrigerators using different refrigerants. One of the refrigerants used in mine air compression refrigerators is R407C. For this refrigerant, 23 dependencies were developed, determining its thermodynamic and thermokinetic parameters in the states of saturated liquid, dry saturated vapour, superheated vapor, subcooled liquid, and in the two-phase region. The created formulas have been presented in Tables 2, 5, 8, 10 and 12, respectively. It should be noted that the scope of application of these formulas is wider than the range of changes of that refrigerant during the normal operation of mine refrigeration equipment. The article ends with the statistical verification of the developed dependencies. For this purpose, for each model correlation coefficients and coefficients of determination were calculated, as well as absolute and relative deviations between the given values from the program REFPROP 7 (Lemmon et al., 2002) and the calculated ones. The results of these calculations have been contained in Tables 14 and 15.
Location of Opening-Out Cross-Cuts in Relation to Rockburst Hazard Conditions along the Face in the Light of Model Testing
Authors: Chlebowski Dariusz , Zorychta Andrzej , Burtan Zbigniew , Cała Marek
Published: March 2017

The paper outlines the main objectives of the method used for assessment of rockburst hazard during longwall mining operations taking into account factors expressing the confined work conditions. Relying on analytical approach, the conditions are examined that are likely to trigger the rockburst occurrence along the face, with regards to the location of cross-cuts and taking into account the presence of past excavation and geological disorders in the overlying strata. Simulation data apply to three cases of model loading, representing the impacts of residual pillars, gobs surrounded by undisturbed blocks of coal and the presence of faults, whilst the procedure involves five possible locations of opening-out cross-cuts in relation to characteristic points in the model. Results are examined basing on variability patterns of stress concentration and energy density distribution in the proximity of the workface in the course of progressing mining operations.
Histopathological Confirmation Etiopathology in the Carpal Tunnel Syndrome
Authors: Bordeianu I. , Baltatescu Gabriela Izabela , Iordache I.V. , Bratu I.C. , Caraban B.M. , Bosnac Nida , Ivanov B. , Podac C.
Published: March 2017

The authors present a retrospective clinical study on a total of 39 patients of both sexes aged between 38 and 76 years with idiopathic carpal tunnel compressive syndrome that surgically excised the anterior carpal ligament by a process custom classic which they examined histologically.

Histopathological examination of objectified as a percentage of 71.79% previously carpal ligament structure is invaded by striated muscle fibers.

Based on histopathological findings as the similarities between functional and embryological origin carpal ligament and anterior aponeurosis palm authors propose introducing embriogenetics etiopathology in compression carpal tunnel syndrome or inclusion in this category suffering from Dupuytren diathesis.
The Importance of Bronchoscopy in Early Lung Cancer (LC) Diagnosis
Authors: Tofolean Doina-Ecaterina , Fildan Ariadna-Peronela , Dantes Elena , Mazilu Laura , Dumitru E. , Tuta Liliana
Published: March 2017

Lung cancer is a leading cause of death worldwide, due to the fact that most patients are diagnosed in a fairly advanced stage. Screening tests such as sputum citology, chest x-rays or CT scans have their limitations and need further histological confirmation of the diagnosis.

Therefore, the need forfast and accurate detection and staging of lung cancer has determined the development of advanced medical procedures using bronchoscopic methods such as white light bronchoscopy, narrow-band imaging, auto-fluorescence bronchoscopy, confocal fluorescence microendoscopy or echoendoscopy.
Multifunctional graphene oxide for bioimaging: emphasis on biological research
Authors: Hwang Do Won , Hong Byung Hee , Lee Dong Soo
Published: March 2017

Graphene oxide (GO) nanomaterials offer a wide range of bioimaging applicability. Almost complete quenching ability of fluorescence by GO and natural interaction of GO with single stranded nucleic acid made GO a useful and intriguing multifunctional nanoplatform both as a biosensor for in vitro microplate diagnostics and as a drug delivery carrier for targeted delivery. GO’s large surface area and strong near infrared absorbance contribute to enhancement of a therapeutic effect with abundant loading of drugs for possible photothermal and photodynamic therapy. Bioimaging capability of GO made it a good theranostic tool, while enabling tracing in vivo pharmacokinetics during concurrent treatment. Fluorescence, either signal on or off, Raman and surface-enhanced Raman scattering (SERs), photoacoustic, and radionuclide imaging modalities can be used for theranostic purposes using GO nanomaterials. In this review, we highlight current applications of GO for bioimaging that are classified into in vitro microplate, in vitro cellular and in vivo bioimaging.