bluuebunny/crossref_metadata_2025 huggingface dataset:
Support optimization for additive manufacturing: application to FDM
Authors: Boyard Nicolas , Christmann Olivier , Rivette Mickaël , Kerbrat Olivier , Richir Simon
Published: November 2017

Purpose

This paper aims to present a new methodology to optimize the support generation within the fused deposition modeling process.

Design/methodology/approach

Different methods of support generation exist, but they are limited with regards to complex parts. This paper proposes a method dedicated to support generation, integrated into CAD software. The objective is to minimize the volume of support and its impact on a part’s surface finish. Two case studies illustrate the methodology. The support generation is based on an octree’s discretization of the part.

Findings

The method represents a first solid step in the support optimization for a reasonable calculation time. It has the advantage of being virtually automatic. The only tasks to be performed by the designer are to place the part to be studied with respect to the CAD reference and to give the ratio between the desired support volume and the maximum volume of support.

Research limitations/implications

In the case studies, a low gain in manufacturing time was observed. This is explained by the honeycomb structure of the support generated by a common slicing software, whereas the proposed method uses a “full” structure. It would be interesting to study the feasibility of an optimized support, with a honeycomb structure but with a preservation of the surface which is in contact with the part.

Originality/value

This solution best fits the needs of the designer and manufacturer already taking advantage of existing solutions. It is adaptable to any part if the withdrawal of support is taken into account. It also allows the designer to validate the generation of support throughout the CAD without breaking the digital chain.
Endoscopic and surgical removal of oesophageal and gastric fishhook foreign bodies in 33 animals
Authors: Binvel M. , Poujol L. , Peyron C. , Dunie‐Merigot A. , Bernardin F.
Published: November 2017

Objectives

To describe the location, retrieval, frequency of surgery and complications associated with fishhook foreign bodies.

Materials and Methods

Retrospective evaluation of the medical records of cats and dogs admitted between 2010 and 2016 after fishhook ingestion.

Results

A total of 33 cases (2 cats and 31 dogs) were included. The most common locations were the proximal oesophagus [12/33 (36%)] and stomach [11/33 (33%)]. Endoscopic retrieval was successful in 27 of 33 cases (82%); oesophageal perforation was the only recorded complication, occurring in six of 33 (18%) cases. Surgery was performed in six cases (18%), and no early complications were recorded. The survival rate was 100%.

Clinical Significance

The endoscopic removal of ingested fishhooks is highly successful. In the present study, survival to discharge was 100%, even in cases of oesophageal perforation or in cases requiring surgery.
3D Object Classification Using Geometric Features and Pairwise Relationships
Authors: Ma Ling , Sacks Rafael , Kattel Uri , Bloch Tanya
Published: November 2017

Object classification is a key differentiator of building information modeling (BIM) from three‐dimensional (3D) computer‐aided design (CAD). Incorrect object classification impedes the full exploitation of BIM models. Models prepared using domain‐specific software cannot ensure correct object classification when transferred to other domains, and research on reconstruction of BIM models using spatial survey has not proved a full capability to classify objects. This research proposed an integrated approach to object classification that applied domain experts’ knowledge of shape features and pairwise relationships of 3D objects to effectively classify objects using a tailored matching algorithm. Among its contributions: the algorithms implemented for shape and spatial feature identification could process various complex 3D geometry; the method devised for compilation of the knowledge base considered both rigor and confidence of the inference; the algorithm for matching provides mathematical measurement of the object classification results. The integrated approach has been applied to classify 3D bridge objects in two models: a model prepared using incorrect object types and a model manually reconstructed using point cloud data. All these objects were successfully classified.
The periodontal pocket
Authors: Donos Nikolaos
Published: November 2017

Periodontal disease is synonymous with the presence of periodontal pockets, and very often the clinical success of periodontal therapy is based on periodontal pocket depth reduction. Therefore, in the fields of periodontology and implant dentistry, significant research effort has been placed on the etiopathogenesis, diagnosis and treatment of periodontal/peri‐implant disease and as a consequence on pocket pathology. In this volume of Periodontology 2000, the in‐depth reviews include topics ranging from preclinical models, anatomy and structure of tissues, and molecular and bacterial components, to treatments of pockets around teeth and implants. These reviews aim to provide the readers with current and future perspectives on the different areas of research into the periodontal pocket.
Is an endoscopic examination associated with transfusion‐transmissible infections? A systematic review and meta‐analysis
Authors: Van Remoortel Hans , Borra Vere , De Buck Emmy , Compernolle Veerle , Vandekerckhove Philippe
Published: November 2017

BACKGROUND

The purpose of a donor medical questionnaire is to identify the blood donor's history relative to the current known blood‐safety risks. A temporary deferral from blood donation after an endoscopic examination is enforced because of the reusable nature of the endoscope and close contact with the inner body. The objective of this systematic review was to find the best available evidence on the association between an endoscopic examination and the risk of transfusion‐transmissible infections.

METHODS

Studies from five databases investigating the link between an endoscopic examination and transfusion‐transmissible infections (hepatitis B virus, hepatitis C virus, human immunodeficiency virus infection, Treponema pallidum) were retained and assessed independently by two reviewers. The association between endoscopy and transfusion‐transmissible infections was identified by conducting meta‐analyses and calculating pooled effect measures (odds ratios and 95% confidence intervals). The Grading of Recommendations, Assessment, Development, and Evaluation methodology was used to assess the quality of evidence.

RESULTS

We identified 7571 references and finally included 29 observational studies. A significant association between an endoscopic examination and hepatitis B virus infection (pooled odds ratio [OR], 2.21; 95% confidence interval [CI], 1.26‐3.86; p = 0.005) or hepatitis C virus infection (pooled OR 1.76, 95% CI, 1.45‐2.14; p < 0.00001) was found. The level of evidence was considered as “very low” due to the type of study design (i.e., observational) and indirect study populations (i.e., no blood donor populations).

CONCLUSION

An endoscopic examination is associated with an increased hepatitis B virus or hepatitis C virus infection risk. Further high‐quality trials are required to formulate stronger evidence‐based recommendations on endoscopic examination as a blood donor deferral criterion.
Experimental Investigation of NOx Formation in a Dual Fuel Engine
Authors: Hagen Luke , Breaux Baine , Flory Michael , Hiltner Joel , Fiveland Scott
Published: November 2017

The North American oil and gas industry has experienced a market pull for dual fuel (DF) engines that can run on any ratio of fuels ranging from 100% diesel to a high proportion of field gas relative to diesel, while also meeting the US Tier 4 Nonroad emissions standards. A DF engine must meet complex and at times competing requirements in terms of performance, fuel tolerance, and emissions. The challenges faced in designing a DF engine to meet all of the performance and emissions requirements require a detailed understanding of the trade-offs for each pollutant. This paper will focus on the details of NOx formation for high substitution DF engines.

Experimental results have demonstrated that NOx emission trends (as a function of lambda) for DF engines differ from both traditional diesel engines and lean burn natural gas engines. For high energy substitution (>70%) conditions, NOx emissions are a function of the premixed gas lambda (λng) and contain a local minimum, with NOx increasing as lambda is either leaned or rich-ened beyond the local minimum which occurs from approximately λng = 1.7–1.85.

It is hypothesized that at richer conditions (λng < 1.7), NOx formed in the burning of gaseous fuel results in increased total NOx emissions. At leaner conditions (λng > 1.85) the NOx formed in the diesel post flame regions, as a result of increased oxygen availability, results in increased total NOx emissions. Between these two regions there are competing effects which result in relatively constant NOx.
Numerical Investigation Into the Performance and Efficiency Trade-Off for a Mechanically Decoupled Electric Boosting System
Authors: Liu Yang , Burke Richard D. , Akehurst Sam , Zhang Qingning
Published: November 2017

Electric turbochargers offer an additional degree of freedom in engine design to meet the conflicting needs of emissions, fuel consumption and performance targets. This paper presents a simulation study of the application of a mechanically decoupled electric turbocharger to a 2.0L Gasoline engine. The aim of this work is to investigate and quantify how the sizing of the turbine influences performance and efficiency both in steady state and over homologation and on-road duty cycles. Steady state simulations are performed in a GT Power 1D gas dynamics model that includes a simplified model of the electric turbocharger. The 1D model was used to create a mean value engine model for the drive cycle simulations. The turbine diameter was varied from 58mm to 78mm (representing 50%–150% of the baseline turbine size). In steady state conditions, the electric turbocharger achieved a maximum of 1.5% improvement in system efficiency. Larger turbines can improve efficiency by reducing the engine pumping loss, however, they compromise the amount of electrical energy that can be harvested in the low engine speed region. This is problematic as this represents a key area of engine operation in a passenger vehicle. A series of mean value engine models were created for different sized turbines to predict BMEP, turbine power generation and overall system efficiency — these were used to evaluate performance over key duty cycles. The mechanically-decoupled electric turbocharger can generate up to 0.38kW average power in the real road driving simulation which can greatly increase the engine fuel economy. In NEDC and WLTP cycles, the e-turbo system can always generate energy and store it into battery (0.21kW and 0.23kW average power in the whole cycle respectively). In several real road driving tests, the energy consumption of the compressor exceeds that of the turbine due to significant running in the low speed/high torque region (A 0.04kW in specific on-road cycle simulation). The sensitivity of these results to vehicle gear ratios and electrical system efficiency is also presented.
Partially Premixed Combustion Application for Diesel Power Improvement
Authors: Walker Michael , Kelso Robert , Bowes Kevin , Hamilton Len , Luning Prak Dianne , Cowart Jim
Published: November 2017

A partially premixed combustion (PPC) approach was applied in a single cylinder diesel research engine in order to characterize engine power improvements. PPC is an alternative advanced combustion approach that generally results in lower engine-out soot and NOx emission, with a moderate penalty in engine-out unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions. In this study PPC is accomplished with a minority fraction of jet fuel injected into the intake manifold, while the majority fraction of jet fuel is delivered directly to the combustion chamber near the start of combustion (SOC). Four compression ratios (CR) were studied. Exhaust emissions plus exhaust opacity and particulate measurements were performed during the experiments in addition to fast in-cylinder combustion metrics. It was seen that as CR increased the soot threshold equivalence ratio decreased for conventional diesel combustion, however this afforded an increased opportunity for higher levels of port injected fuel leading to power increases from 5 to 23% as CR increased from 14 to 21.5. PPC allowed for these power increases (defined by a threshold opacity level of 3%) due to smaller particles (and lower overall number of particles) in the exhaust that influence measured opacity less significantly than larger and more numerous conventional diesel combustion exhaust particulates. Carbon monoxide levels at the higher PPC driven power levels were only modestly higher, although NOx was generally lower due to the overall enriched operation.
Influence of the Position of Oil Drain Holes of a Piston on Lubricating Oil Consumption
Authors: Hasegawa Hiroki , Kikuhara Koji , Ito Akemi , Nishijima Shunsuke , Inui Masatsugu , Akamatsu Hirotaka
Published: November 2017

An increase in lubricating oil consumption in an engine causes an increase in particulate matters in exhaust gases, poisoning the catalyst of after treatment devices, abnormal combustion in a turbo-changed gasoline engine and so on. Recent trend of low friction of a piston and piston ring tends to increase in lubricating oil consumption. Therefore reducing oil consumption is required strongly. It is known that oil pressure generated under the oil ring affects lubricating oil consumption. It is also known that the position of oil drain holes affects lubricating oil consumption. In this study, the effect of the position of oil drain holes on oil pressure under the oil ring and lubricating oil consumption was investigated. The oil pressure under the oil ring is measured using fiber optic pressure sensors and pressure generation mechanisms were investigated. Lubricating oil consumption was also measured using sulfur tracer method and the effects of oil drain holes against the oil pressure under the oil ring were evaluated. Four types of arrangement of oil drain holes were tested. The oil pressure variations under the oil ring in the circumferential direction was measured using a gasoline engine. An increase in oil pressure was found during down-stroke of the piston. The lowest oil pressure was found for the piston with four oil drain holes. Two holes nearby the front / rear end of the piston skirt showed relatively lower pressure. The measured results of oil consumption showed good agreement to measured oil pressure under the oil ring. It was found that oil pressure under the oil ring affected oil consumption, and oil drain holes set near the front / rear end of the piston skirt were effective for reducing oil consumption.
Cold-Start CFD Simulation of Spark-Ignition Direct-Injection Engine
Authors: Yang Xiaofeng , Kuo Tang-Wei , Singh Kulwinder , Hattar Rafat , Zeng Yangbing
Published: November 2017

Reliably starting the engine during extremely cold ambient temperatures is one of the largest calibration and emissions challenges in engine development. Although cold-start conditions comprise only a small portion of an engine’s typical drive cycle, large amounts of hydrocarbon and particulate emissions are generated during this time, and the calibration of cold-start operation takes several months to complete.

During the cold start period, results of previous cycle combustion event strongly influences the subsequent cycle due to variations in engine speed, residual fraction, residual wall film mass, in-cylinder charge and wall temperatures, and air flow distribution between cylinders. Include all these parameters in CFD simulation is critical in understanding the cold start process in transient and cumulative manner.

Measured cold start data of a production four cylinder spark-ignition direct-injection engine was collected for this study with an ambient temperature of −30 °C. Three-dimensional transient engine flow, spray and combustion simulation over first 3 consecutive engine cycles is carried out to provide a better understandings of the cold-start process. Measured engine speed and 1D conjugate heat transfer model are used to capture realistic in-cylinder flow dynamics and transient wall temperatures for more accurate fuel-air mixing predictions.

The CFD predicted cumulative heat release trend for the first 3 cycles matches the data from measured pressure analysis. The same observation can be made for the vaporized fuel mass as well. These observations are explained in the report.
Using Multi-Dimensional Combustion Simulations of a Natural Gas/Diesel Dual Fuel Engine to Investigate NOx Trends With Air-Fuel Ratio
Authors: Hockett Andrew , Flory Michael , Hiltner Joel , Fiveland Scott
Published: November 2017

Natural gas/diesel dual fuel engines used in oil and gas drilling operations must be able to meet NOx emissions limits across a wide range of substitution percentage, which affects the air to natural gas ratio or gas lambda. In a dual fuel engine operating at high substitution, premixed, propagating natural gas flames occur and the NOx formed in such premixed flames is known to be a strong function of gas lambda. Consequently there is interest in understanding how NOx formation in a dual fuel engine is affected by gas lambda. However, NOx formation in a dual fuel engine is complicated by the interaction with the non-premixed diesel jet flame. As a result, previous studies have shown that enriching the air-fuel ratio can either increase or decrease NOx emissions depending on the operating conditions investigated. This study presents multi-dimensional combustion simulations of an air-fuel ratio sweep from gas lambda 2.0 to 1.5 at 80% substitution, which exhibited a minimum in NOx emissions at a natural gas lambda of 1.75. Images from the simulations are used to provide detailed explanations of the physical processes responsible for the minimum NOx trend with natural gas lambda.
Kinematics of an Articulated Connecting Rod and its Effect on Simulated Compression Pressures and Port Timings
Authors: Fieseler Kelsey , Jacobs Timothy J. , Patterson Mark
Published: November 2017

This study discusses the motion of the articulated connecting rod of an integral-engine compressor and the effect of the kinematics on in-cylinder pressure and port timings. A piston position modeling technique based on kinematics and engine geometry is proposed in order to improve the accuracy of simulated in-cylinder compression pressures.

Many integral-engine compressors operate with an articulated connecting rod. For this type of engine-driven compressor, two power pistons share a crank throw with the compressor. The hinge pins that attach the power piston connecting rods to the crank are offset, causing the piston locations for each cylinder to be out of phase with each other. This causes top dead center to occur at different crank angles, alters the geometric compression ratio, and also changes the port timings for each cylinder.

In this study, the equations of motion for the pistons of the four possible compressor/piston configurations of a Cooper-Bessemer GMW are developed. With the piston profiles, the intake and exhaust port timings were determined and compared to those of a slider-crank mechanism. The piston profile was then inputted into GT-POWER, an engine modeling software developed by Gamma Technologies, in order to obtain an accurate simulation match to the experimental in-cylinder pressure data collected from a Cooper-Bessemer GMWH-10C.

Assuming the piston motion of an engine with an articulated connecting rod is similar to a slider-crank mechanism can create a difference in port timings. The hinge pin offset creates asymmetrical motion about 180°aTDC, causing the port timings to also be asymmetrical about this location. The largest differences are shown in the intake port opening of about 10° and a difference in exhaust port opening of about 7° when comparing the motion of the correct configuration to the motion of a slider-crank mechanism.

It is shown that properly calculating the piston motion profiles according to the crank articulation and engine geometry provides a good method of simulating in-cylinder pressure data during the compression stroke.
Partially Premixed Compression Ignition of Fischer Tropsch Synthetic Paraffinic Kerosene (S8) With PFI of N-Butanol
Authors: Soloiu Valentin , Gaubert Remi , Moncada Jose , Harp Spencer , Flowers Kyle , Ilie Marcel
Published: November 2017

The combustion in an experimental medium duty direct injected engine was investigated in a dual mode process known as partially premixed compression ignition (PPCI). Both a common rail fuel injection system and port fuel injection (PFI) system have been custom designed and developed for the experimental single cylinder engine in order to research the combustion and emissions characteristics of Fischer Tropsch synthetic paraffinic kerosene (S8) with PFI of n-butanol in a low temperature combustion mode (LTC). Baseline results in single fuel (ULSD) combustion were compared to dual fuel strategies coupling both the low and high reactivity fuels. The low reactivity fuel, n-butanol, was port fuel injected in the intake manifold at a constant 30% fuel mass and direct injection of a high reactivity fuel initiated the combustion. The high reactivity fuels are ULSD and a gas to liquid fuel (GTL/S8). Research has been conducted at a constant speed of 1500 RPM at swept experimental engine loads from 3.8 bar to 5.8 bar indicated mean effective pressure (IMEP). Boost pressure and exhaust gas recirculation (EGR) were added at constant levels of 3 psi and 30% respectively. Dual fuel combustion with GTL advanced ignition timing due to the high auto ignition quality and volatility of the fuel. Low temperature heat release (LTHR) was also experienced for each dual-fuel injection strategy prior to the injection of the high reactivity fuel. Peak in-cylinder gas temperatures were similar for each fueling strategy, maintaining peak temperatures below 1400°C. Combustion duration increased slightly in ULSD-PPCI compared to single fuel combustion due to the low reactivity of n-butanol and was further extended with GTL-PPCI from early ignition timing and less premixing. The effect of the combustion duration and ignition delay increased soot levels for dual fuel GTL compared to dual fuel ULSD at 5.8 bar IMEP where the combustion duration is the longest. NOx levels were lowest for GTL-PPCI at each load, with up to a 70% reduction compared to ULSD-PPCI. Combustion efficiencies were also reduced for dual fuel combustion, however the atomization quality of GTL compared to ULSD increased combustion efficiency to reach that of single fuel combustion at 5.8 bar IMEP.
Ixodes spp. (Acari: Ixodidae) ticks in Rio Grande do Sul state, Brazil
Authors: Michel Thais , Souza Ugo , DallAgnol Bruno , Webster Anelise , Peters Felipe , Christoff Alexandre , Luza André , Kasper Neliton , Becker Marcelo , Fiorentin Gelson , Klafke Guilherme , Venzal José , Martins João Ricardo , Jardim Márcia , Ott Ricardo , Reck Jose
Published: November 2017

Among the 251 described species of ticks from the genus Ixodes, only eight were previously reported in Brazil, Ixodes amarali, Ixodes aragaoi, Ixodes auritulus, Ixodes fuscipes, Ixodes loricatus, Ixodes luciae, Ixodes paranaensis and Ixodes schulzei. Of those species, I. loricatus is considered commonly found, whereas I. auritulus and I. aragaoi were registered just one time in Rio Grande do Sul (RS) state, Southern Brazil. This paper aims to update the Ixodes species occurring in RS through the investigation of the ixodofauna of small rodents. Data from 314 wild rodents were analyzed from nine municipalities of Pampa biome and five from the Atlantic Rainforest in RS. Rodents belonging to the following species were infested by Ixodes spp. ticks: Akodon azarae, Akodon montensis, Akodon paranaensis, Akodon reigi, Calomys laucha, Delomys dorsalis, Deltamys kempi, Holochilus brasiliensis, Oligoryzomys flavescens, Oligoryzomys nigripes, Oxymycterus nasutus, Scapteromys tumidus (Cricetidae) and Cavia aperea (Caviidae). The tick identification was performed based on morphological dichotomous keys, their updates and by molecular techniques. Considering the ticks from the rodents and those collected directly from the environment, 34 specimens of Ixodes spp. were collected. Our results improved to five the list of Ixodes species that occur in RS: I. loricatus, I. auritulus, I. aragaoi, I. fuscipes and I. longiscutatus. Moreover, the finding of I. longiscutatus increases to nine the number of Ixodes species in Brazil. The occurrence of two species of the Ixodes ricinus complex (I. aragaoi and I. fuscipes) highlights the potential impact of Ixodes spp. ticks on public health.
Response to Comment on “Water harvesting from air with metal-organic frameworks powered by natural sunlight”
Authors: Kim Hyunho , Rao Sameer R. , Narayanan Shankar , Kapustin Eugene A. , Yang Sungwoo , Furukawa Hiroyasu , Umans Ari S. , Yaghi Omar M. , Wang Evelyn N.
Published: November 2017

In their comment, Bui
et al
. argue that the approach we described in our report is vastly inferior in efficiency to alternative off-the-shelf technologies. Their conclusion is invalid, as they compare efficiencies in completely different operating conditions. Here, using heat transfer and thermodynamics principles, we show how Bui
et al
.’s conclusions about the efficiencies of off-the-shelf technologies are fundamentally flawed and inaccurate for the operating conditions described in our study.
Navigating in a sea of genes
Authors: Rynearson Tatiana A.
Published: November 2017

Randomly generated microbial genomes produce realistic nutrient gradients in a model ocean
Quake warnings, seismic culture
Authors: Allen Richard M. ,   EERI Reconnaissance Team
Published: November 2017

Since 1990, nearly one million people have died from the impacts of earthquakes.
Reducing those impacts requires building a local seismic culture in which
residents are aware of earthquake risks and value efforts to mitigate harm. Such
efforts include earthquake early warning (EEW) systems that provide seconds to
minutes notice of pending shaking. Recent events in Mexico provide an
opportunity to assess performance and perception of an EEW system and highlight
areas for further improvement. We have learned that EEW systems, even imperfect
ones, can help people prepare for earthquakes and build local seismic culture,
both beneficial in reducing earthquake-related losses.
Organismal engineering: Toward a robotic taxonomic key for devices using organic materials
Authors: Webster-Wood Victoria A. , Akkus Ozan , Gurkan Umut A. , Chiel Hillel J. , Quinn Roger D.
Published: November 2017

A robotic taxonomic key may guide the field toward a unified lexicon for biohybrid and organic device description.
Effect of various treatments on consolidation of oil sands fluid fine tailings
Authors: Wilson G. Ward , Kabwe Louis K. , Beier Nicholas A. , Scott J. Don
Published: November 2017

Regulatory policy and regulations in Alberta require oil sands companies to reduce their production and storage of fluid fine tailings by creating deposits that can be reclaimed in a timely manner. To meet the regulatory requirements, some companies are adding flocculants to the fluid fine tailings and then using thickeners, inline flocculation or centrifuges to increase the solids content. Freeze–thaw and drying processes are then used to further dewater the tailings. The effects of flocculating, thickening, and freeze–thaw treatments were investigated by performing large-strain consolidation and shear strength tests on these treated fluid fine tailings. The consolidation and shear strength results were then compared with those of untreated fluid fine tailings. All of the treatments increased the hydraulic conductivity of the fluid fine tailings to some degree, but had little to no effect on the compressibility and shear strength. The effects of the treatment processes are discussed and evaluated.
PARALLEL STUDIES OF COMPLEMENT AND COAGULATION III. THE EFFECT OF THE PROTEIN LEVEL OF THE DIET
Authors: Rice Christine E. , Boulanger Paul , Plummer P. J. G.
Published: November 2017

The complement and coagulative activities of the blood were studied in three groups of 20 guinea pigs each, receiving diets containing different amounts of protein, 2.3 to 26.7%. The mean complement titers were found to be lower and the prothrombin times longer in the group fed the diet containing the least protein, 2.3%. Of the four major complement components,,the fourth, C'4, appeared to be most affected. Sera of the animals receiving less protein were lower in total protein content and had lower albumin - globulin ratios than sera from guinea pigs on the higher protein diets. No relationship was demonstrated between coagulation time and serum protein content.
Mean-field potential approach for thermodynamic properties of lanthanide: Europium as a prototype
Authors: Kumar Priyank , Bhatt N. K. , Vyas P. R. , Gohel V. B.
Published: November 2017

In the present paper, a simple conjunction scheme [mean-field potential (MFP) + local pseudopotential] is used to study the thermodynamic properties of divalent lanthanide europium (Eu) at extreme environment. Present study has been carried out due to the fact that divalent nature of Eu arises because of stable half-filled 4f-shell at ambient condition, which has great influence on the thermodynamic properties at extreme environment. Due to such electronic structure, it is different from remaining lanthanides having incomplete 4f-shell. The presently computed results of thermodynamic properties of Eu are in good agreement with the experimental results. Looking to such success, it seems that the concept of MFP approach is successful to account contribution due to nuclear motion to the total Helmholtz free energy at finite temperatures and pressure-induced inter-band transfer of electrons for condensed state of matter. The local pseudopotential is used to evaluate cold energy and hence MFP accounts the s–p–d–f hybridization properly. Looking to the reliability and transferability along with its computational and conceptual simplicity, we would like to extend the present scheme for the study of thermodynamic properties of remaining lanthanides and actinides at extreme environment.
Synthesis of alkylthio substituted pyridoporphyrazines and their photophysicochemical properties
Authors: Sakamoto Keiichi , Watabiki Shouta , Yoshino Satoru , Komoriya Tomoe
Published: November 2017

Phthalocyanine and their related compounds are utilized as various applications, such as photosensitizing agents for photodynamic therapy of cancer. In this study, zinc bis(thiodidecylbenzo)-bis(pyrido)porphyrazines, especially zinc bis(1,4-didecylthiobenzo)-bis(3,4-pyrido)porphyrazine and zinc bis(1,4-didecylthiobenzo)-bis(2,3-pyrido)porphyrazine were synthesized. Quaternation of the pyridine nitrogen in these provides an amphiphilic property. Photoexcited triplet lifetime of synthesized and quaternized zinc bis(1,4-didecylthiobenzo)-bis(3,4-pyrido)porphyrazine and zinc bis(1,4-didecylthiobenzo)-bis(2,3-pyrido)porphyrazine were reported using laser-flash photolysis and singlet oxygen quantum yields by the 1,3-diphenylisobenzofurne method.
Recurrent Gastrointestinal Stromal Tumors in the Imatinib Mesylate Era: Treatment Strategies for an Incurable Disease
Authors: Platoff Rebecca M. , Morano William F. , Marconcini Luiz , DeLeo Nicholas , Mapow Beth L. , Styler Michael , Bowne Wilbur B.
Published: November 2017

Introduction. Recurrence of gastrointestinal stromal tumors (GISTs) after surgical resection and imatinib mesylate (IM) adjuvant therapy poses a significant treatment challenge. We present the case of a patient who underwent surgical resection after recurrence and review the current literature regarding treatment. Case Presentation. A 58-year-old man with a large intra-abdominal jejunal GIST was treated with complete surgical resection followed by IM. The patient experienced disease recurrence 3.5 years later and underwent IM dose escalation and reresection. Conclusion. Current strategies to treat recurrent GIST include dose escalation, modifying adjuvant tyrosine kinase inhibitor therapy, and surgery. High-level evidence will be required to better define the combinatory roles of tyrosine kinase inhibitor therapy, guided by molecular profiling, and surgery in the management of recurrent GIST.
Changing the Narrative: The New History That Was and Is to Come
Authors: de Vries Jan
Published: November 2017

Historians’ engagement with the social sciences, which was promising and multi-dimensional into the 1970s, shriveled soon thereafter. The factors that seemed to justify this turning away appear today to be much less compelling. Times have changed, and both historians and social scientists may now be ready to re-engage with an interrupted project to intensify interdisciplinary dialogue, improve the methods of historical explanation, and construct a more historical body of social theory.
Introduction: The Quest for Interdisciplinary History
Authors:   The Editors
Published: November 2017

Klein and de Vries lament the erosion of the alliance between historians and social scientists that has taken place in recent decades. For Klein, the main reason for this change has been historians’ “turn” from the insights of the social sciences; for de Vries, it is the effects of the attempt by many historians to restore “narrative history.” Whatever the cause, neither scholar is optimistic about closing the gap between historians and social scientists.
Circinella simplex—a misapplied name of Mucor circinatus sp. nov.
Authors: LIMA DIOGO X. , SOUZA-MOTTA CRISTINA M. , WAGNER LYSETT , VOIGT KERSTIN , DE SOUZA CARLOS A. F. , DE OLIVEIRA RAFAEL J. V. , DA SILVA GLADSTONE A. , SANTIAGO ANDRÉ L. C. M. DE AZEVEDO , WALTHER GRIT
Published: November 2017

Circinella (Mucorales, Mucoromycotina) is morphologically similar to Mucor, differing by the production of circinate sporangiophores and sporangia with a persistent and incrusted sporangial wall. During a study on the diversity of Mucorales in areas of the Atlantic Rainforest in Brazil, we isolated a strain that fits the current morphological concept of C. simplex of Hesseltine and Fennell (1955) by forming simple circinate sporangiophores with secondary branches and angular sporangiospores. Molecular phylogenetic analyses based on three different markers (ITS, LSU and MCM7) confirmed conspecificity of the Brazilian strain with other angular spored strains of the CBS collection including the strain studied by Hesseltine & Fennell (1955). The molecular phylogenetic analyses clearly placed these strains in the genus Mucor in the close relationship to M. laxorrhizus and M. fuscus. However, in his original description van Tieghem (1875) described and illustrated C. simplex with sporangiophores without secondary branches and globose sporangiospores. Based on these striking morphological differences combined with a differing geographic distribution, we conclude that the angular-spored strains represent a separate undescribed species for which we propose the name Mucor circinatus sp. nov.
Description of the larva and pupa of Neocorvicoana reticulata (Kirby, 1819) (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini)
Authors: IBARRA-POLESEL MARIO G. , NEITA-MORENO JHON C. , LARREA DARIO D. , DAMBORSKY MIRYAM P.
Published: November 2017

The third instar and pupa of Neocorvicoana reticulata (Kirby, 1819) (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini) from Argentina, are described and illustrated. This is the first description of immatures in this genus. A key to the known third-stage larvae of New World Gymnetini species is provided, which now includes 19 species in 10 genera.
Hepatitis A: What practice nurses need to know
Authors: Gawthrop Mary
Published: November 2017

Hepatitis A is a liver disease caused by a virus. Vaccination is a way of preventing this disease in travellers; however, the international vaccine shortage means that dose sparing advice should be followed. Mary Gawthrop explains

Hepatitis A is a viral disease that affects the liver. Travel to countries with unsafe water and inadequate sanitation is a risk factor for hepatitis A. Outbreaks have also been associated with men who have sex with men. An international shortage of hepatitis A vaccine has led to the implementation of dose sparing advice to prioritise stock for those who are at highest risk of contracting the disease. It is essential that practice nurses working in a travel capacity have an awareness of the current guidelines. This article provices a summary of UK hepatitis A vaccine guidance.
Practice nurses' knowledge and competence in relation to perinatal mental health care
Authors: Downes Carmel , Carroll Margaret , Gill Ailish , Monahan Mark , Higgins Agnes
Published: November 2017

Given practice nurses' close contact with women in the perinatal period, the authors of this study sought to explore their knowledge and competence of dealing with perinatal mental health problems

Aims:

The study aimed to explore the extent of practice nurses' involvement with women experiencing perinatal mental health problems and to explore their knowledge, confidence and skills in identifying and responding effectively to these women.

Methods:

Data were collected from 185 practice nurses over a 6-month period in 2016 using an anonymous, self-completed online survey.

Results:

Just under half of practice nurses reported dealing with women with perinatal mental health problems. This cohort reported deficits in knowledge, skill, confidence and training to perform the role, and the majority did not inquire about sensitive and complex topics, such as intimate partner violence and psychosis. A lack of access to and support for the education of practice nurses in perinatal mental health care was found.

Conclusion:

Practice nurses require education and other supports, such as care pathways, to provide psychological support to women experiencing perinatal mental health problems.
Supporting the ‘missing millions’ and those with a COPD diagnosis
Authors: Roots Debbie
Published: November 2017

Practice nurses have a big role to play in supporting the millions of people who are struggling with the symptoms of COPD but who don't yet have a diagnosis, as well as those already diagnosed. Debbie Roots explains how to work with patients to improve their quality of life
Research Roundup
Authors: Winter George
Published: November 2017

George Winter provides an overview of recently published articles that may be of interest to practice nurses. Should you wish to look at any of the papers in more detail, a full reference is provided
Joint ventures – agree your terms
Authors: Cumberlege Justin
Published: November 2017

As health providers join together to provide integrated care services, it raises the question of how their contractual responsibilities are going to be shared, writes Justin Cumberlege
Seasonal allowances to toast your team
Authors: Harnby Phil
Published: November 2017

Specialist medical accountant, Phil Harnby, explains the tax rules for treating your team to a night out
Digital ‘underwriting’: A script development technique in the age of media convergence
Authors: Dooley Kath
Published: November 2017

This article examines the use of digital tools to create audio-visual resources that can both inspire and inform the development of the contemporary feature film screenplay. With reference to Martin, Millard, Price and practitioners Waldo Salt, Raul Ruiz and Mike Leigh, I define this activity as a form of ‘underwriting’. This term refers to the creation of fictional, written or audio-visual work that does not feature in the screenplay but helps to inform the creation of characters, narrative and story world. The writers/directors listed above are noted for creating a mass of material that contributes towards the richness of their work but is not intended for publication in script form or in the final film. I then report on my own digital ‘underwriting’ in the early development of a feature film tentatively titled Fireflies. This activity has involved the use of digital cameras, mobile phones and social media to document and develop a screen idea during workshops with actors. The result is the creation of a mass of creative material (character improvisations, profiles and filmed ‘test scenes’) that informs the writing of my screenplay. Finally, I consider how this ‘underwriting’ might also function as an audience development tool. I situate my work alongside current industry practices in Australia and abroad (such as the production of proof-of-concept videos and mood reels) to demonstrate the increasingly common and desirable use of digital tools in the early development of a screen idea for both writer and audience.
Sintomas Osteomusculares em Profissionais Bancários
Authors: Pinheiro Marcilene Oliveira , Sampaio Leonardo Costa
Published: November 2017

O trabalho bancário vem sofrendo profundas modificações tecnológicas e nas relações de trabalho, e essas mudanças tem causado mais desgaste físico e mental, promovendo problemas de saúde, destacando-se entre as patologias os sintomas osteomusculares que causam sofrimento e absenteísmo. Objetivos: Investigar a prevalência de sintomas de distúrbios osteomusculares em trabalhadores bancários. Especificamente, busca-se descrever o perfil sociodemográfico, apresentar variáveis funcionais e características do trabalho bancário, identificar os segmentos corporais com dor e desconforto, e analisar a frequência de queixas de dores desse profissional. Materiais e Métodos: Trata-se de uma pesquisa com abordagem quantitativa, caráter exploratório e descritivo, do tipo transversal. O estudo adotou um questionário sociodemográfico e o “Questionário Nórdico de Sintomas Osteomusculares (QNSO)”, para coletar as informações, além de realizar uma tabulação de dados, com média, desvio padrão, porcentagem e frequência. Resultados: O estudo diagnosticou que os bancários já tiveram desconforto osteomuscular em áreas como tornozelo e/ou pés (86,67%), pescoço (80%), dorsal (63,33%) e lombar (60%). Apontaram também frequência de dor, desconforto ou dormência, nos últimos sete dias, na região dorsal (76,67%), lombar (26,67%), antebraços (16,67%) e joelhos (3,33%). Além disso, indicaram afastamento do trabalho devido à dores em todas as regiões, destacando-se a dorsal (13,33%), lombar (10,00%) e pescoço (10,00%). Conclusão: Os distúrbios osteomusculares acometem diretamente a qualidade de vida dos profissionais bancários, proporcionando o afastamento das atividades e falta de qualidade de vida. Assim, que a prevenção no ambiente laboral pode proporcionar uma grande melhora nos níveis de frequência e de produtividade.
Evaluación de recursos naturales y culturales para la creación de un corredor turístico en el altiplano de San Luis Potosí, México
Authors: Vázquez Martínez Gustavo Adolfo , Vázquez Solís Valente
Published: November 2017

La conformación económica del árido Altiplano de San Luis Potosí ha descansado en los sectores agropecuario, el comercio y la minería. Sin embargo, la incorporación de nuevos territorios a la actividad turística, como parte de una política de impulso nacional, ha permitido la apertura a la diversificación económica en zonas desérticas. En este sentido, los municipios de Cedral, Matehuala y Villa de la Paz disponen de recursos naturales y culturales para el aprovechamiento turístico, lo que se sustenta en los atributos de su medio físico-geográfico, la herencia cultural de grupos prehispánicos, su arquitectura y su gastronomía.Esta investigación revela la riqueza material y cultural de tres municipios del Altiplano potosino en la que se utilizó una metodología de análisis multicriterio para definir 10 áreas proclives al aprovechamiento turístico con base en la detección de sitios aptos y, a partir de estos, conformar un corredor turístico con los atributos más importantes de la región, en la que existe un emergente potencial que dinamizaría la economía turística local y regional.La propuesta del corredor –dentro de su planeación– integra condiciones (y tiene implicaciones) de orden ambiental, social y económico, que incentivan la movilización de bienes, servicios, mercancías y turistas en la zona y promueven la integración política y la participación de los actores involucrados.
Hubungan status besi dan ioidum ibu hamil trimester III terhadap berat badan dan lingkar kepala bayi lahir didaerah endemik GAKI
Authors: Novitasari Sherly , Hadisaputro Soeharyo , SS Darmono , Rachmawati Banundari , Pemayun Tjokorda Gde Dalem
Published: November 2017

Background: Iodine and iron were micronutrient that highly related with formation of thyroid hormone. Iodine and iron deficiency during pregnancy, will affect fetal development. Weight and born baby’s head circumference were early indicator of infant development, because it describe the result of interaction of several factors for fetus during pregnancy. Objectives: To determine correlation between iodine and iron status of pregnant women in third trimester with born baby’s weight and head circumference. Methods: Cross sectional study with 49 pregnant women on third trimester and their baby born. Measurement of iron status used sTfR level by ELISA and iodine status used EIU. Meanwhile for the born baby, measurement was taken place on the baby’s weight and head circumference. Results: The average of iron status is 22,15 nmol/L, meanwhile average of iodine status is 168,63 μg/L with urine median value 165 μg/L. Statistical analysis with multiple correlation test showed no significant relationship between iron and iodine status of third trimester pregnant women to birth weight (r = 0,286; p = 0,141) as well as the babies head circumference (r = 0,195; p = 0,412).Conclusion: Iron and iodine status of third trimester pregnant women have low correlation to the born babies weight or head circumference in endemic area.
Pengaruh pemberian rumput laut sargassum sp terhadap kadar hemoglobin dan feritin serum
Authors: Yuniarti Anita , Hadisaputro Soeharyo , W Nyoman Suci
Published: November 2017

Background : Anemia is a global phenomenon involving developing countries. Fifty percent of anemia cases is caused by iron deficiency. Indonesia is a tropical country that is rich in various kinds of marine plants and still not used optimally.Sargassum sp is one of high iron contains seaweed but still less utilized. Objectives: the aim of this study was to analyze the influence of Sargassum sp on hemoglobin and serum ferritin level. Methods : a simple randomized with pre and posttest control group design was used in this study. Sixteen Wistar male rats were divided into 2 groups (1) control (2) treatment and fed with Sargassum sp 0,49 g for 14 days. During the treatment pre and post hemoglobin and serum ferritin was measured. Results : : iron level in Sargassum sp was 122,37mg/g and Pb level was 0,00009%. In the treatment group hemoglobin level was significantly increased 5,24 mg/dl (p<0,05) and serum ferritin was increased 4,20 µg/ml (p>0,05). Conclusion : sargassum sp increased hemoglobin level on anemic wistar rat but not in serum ferritin significantly.
Überlieferung und die beiden Rollen der Bibliotheken
Authors: Schaab Rupert
Published: November 2017

In Katalogdatenbanken öffentlich gemachte Selbstverpflichtungen bilden ein nachhaltiges, flexibles und robustes Instrument zur Überlieferungssicherung gedruckter Bücher und Zeitschriften in den Wissenschaftlichen Bibliotheken Deutschlands. Erforderlich sind hierfür verlässliche Angaben zur Überlieferungshäufigkeit, Transparenz und effiziente Verfahren zur Überführung seltener Titel an einschlägige Bibliotheken sowie der Wille zu einer stärkeren Arbeitsteilung zwischen den Einrichtungen.