bluuebunny/crossref_metadata_2025 huggingface dataset:
Correlation between Bone Scan Findings and CA 153 in Patients with Carcinoma Breast
Authors: Sharmin Samira , Haque Jasmine Ara , Rahman Md Mahbub Ur , Rahman Hosne Ara , Hossain Jamiul , Uddin Md Monir , Ferdous Jesmine , Yasmin Farida
Published: June 2018

Objectives: Breast carcinoma is the most life threatening malignant condition in women. This malignant disease commonly metastasizes to bone. Carbohydrate antigen (CA) 15-3 is a circulating human breast cancer associated antigen used as a tumor marker in the screening of breast cancer patients for metastasis. The objective of this study was to compare the levels of CA 15-3 and bone scan findings in patients with breast cancer.

Patients and Methods: This cross sectional study was carried out at Institute of Nuclear Medicine and Allied sciences, Mitford, Dhaka, from January 2015 to December 2015. A total of 75 diagnosed breast cancer patients were enrolled in this study. All of them underwent bone scan. The tumor maker CA 15-3 was compared with bone scan findings. Pearson’s correlation coefficient test was done to see the relationship between bone scan and CA 15-3.

Results: Mean age of the patients was 47.60 ± 10.53 years (range 25 to 65 years). About half (49%) of the patients belong to the age group 50 years and above. Mean ± SD of CA 15-3 was 84.06 ± 104.60 U/ml (range from 10.12 to 395.30 U/ml). Out of 75 patients, 33 patients showed elevated CA 15-3 level, among them 42% had negative bone scan with mean ± SD CA 15-3 level 60.98 ± 9.95 U/ml (range 40.26-72.17 U/ml), 58% patients had positive bone scan with mean ± SD CA 15-3 level 246.23 ± 81.35U/ml (range 110-395.30 U/ml). CA 15-3 was within normal limit (range 10.20-30.10 U/ml) in 42 patients. Among them 29% patients had negative bone scan and 71% patients had positive bone scan. Pearson’s correlation coefficient test showed positive relationship (p = 0.001, r = 0.343) between CA 15-3 level and bone scan findings.

Conclusion: The result of the study showed positive relationship between the bone scan findings and CA 15-3 level of carcinoma breast patients.

Bangladesh J. Nuclear Med. 20(1): 24-26, January 2017
Use of IAEA Radiation Dose Criteria to Assess the Need for Internal Radiation Dosimetry in Nuclear Medicine Practices
Authors: Mollah Abdus Sattar , Rahman K , Hossain Md
Published: June 2018

The IAEA Safety Guide RS-G-1.2 recommends that occupational radiation monitoring should be implemented whenever it is likely that committed effective doses from annual intakes of radionuclides would exceed1mSv. This study presents the analysis of IAEA methodology for the evaluation of the need for the implementation of an internal monitoring program; considering that it should be carried out whenever the potential internal exposure of incorporation leads to a value of annual committed effective dose equal or higher than 1 m Sv. The IAEA criteria applied to commonly used radionuclides in nuclear medicine, taking into consideration usual manipulated unsealed radioactive sources and handling conditions. It is concluded that the handling of unsealed radioactive sources presents the risk of internal radiation exposure to the workers, requiring the implementation of an internal dosimetry program by the concerned Nuclear Medicine Institutes/Centers.  

Bangladesh J. Nuclear Med. 20(1): 51-55, January 2017  
Derivation of Nanocellulose from Native Rice Husk
Authors: Hossain Md Iqbal , Zaman Humayra , Rahman Taslima
Published: June 2018

Nanocellulose has been in numerous applications and can be obtained from bioresources. This work demonstrates the derivation of nanocellulose from an alternative option i.e. rice husk. The processed rice husk was refined by chemical and mechanical treatments. Nanocellulose was subsequently derived from the refined rice husk through acid hydrolysis followed by centrifugation, dialysis and ultrasonic treatment. Scanning Electron Microscopy ensured the nanoscale diameter while Fourier Transformed InfraRed Spectroscopy confirmed the removal of noncellulosic materials. It is therefore proposed that the native rice husk can also be utilized for manufacturing nanocellulose reducing its adverse environmental impacts.

Chemical Engineering Research Bulletin 20(2018) 19-22
Step Care Management of Heart Failure
Authors: Mahmood Manzoor , Hoque Harisul
Published: June 2018

Abstract not availableUniversity Heart Journal Vol. 13, No. 1, January 2017; 01
Association between Myocardial Performance Index and Severity of Coronary Artery Disease Assessed with SYNTAX Score
Authors: Mohammad Noor , Safiuddin Mohammad , Rahman Md Mukhlesur , Ahmed Khurshed , Banerjee Sajal Krishna , Parveen Tanjima , Farzana Mst Nilufar , Hasan Md Nazmul
Published: June 2018

Background: Despite improvement in risk scoring, there are patients with stable angina identified as low risk who experience CAD events, as well as, patients deemed high risk remained free of CAD events. Invasive coronary angiogram is the gold standard method for assessment of extent and severity of CAD. However, search for additional noninvasive tool that may aid in risk discrimination is going on. Myocardial performance index (MPI) is emerging as one of them.Objective: To assess the relationship between Myocardial Performance Index and severity of coronary artery disease assessed with SYNTAX Score in chronic stable angina. Methods: This cross-sectional study was conducted in the department of Cardiology, University Cardiac Centre of BSMMU during the period of January, 2014 to December,2014 among the patients of chronic stable angina undergoing elective coronary angiogram. Total 90 patients were enrolled by random purposive sampling. All the data were recorded in structured questionnaire. Coronary angiogram with SYNTAX scoring was done during index hospital admission. Doppler study was done 1 day prior to CAG to measure MPI.Result: The mean age was found 45.5±26.1 years varied from 36 to 68 years. Male female ratio was 1.9:1. A negative significant correlation (r=-0.792; p=0.001) was found between ejection fraction (EF) and myocardial performance index (MPI). Regarding the association between risk factors with MPI status, the mean MPI was found 0.65±0.10 in diabetes mellitus and 0.57±0.10 in without diabetes mellitus. Mean MPI was significantly higher in diabetes mellitus, others risk factors are not significantly associated with MPI status. Majority (38.9%) patient’s SYNTAX score belonged to 0-22, 28(31.1%) was SYNTAX 23-32 score and 27(30.0%) was SYNTAX ≥33 score. The mean MPI was found 0.51±0.04 in low SYNTAX, 0.61±0.03 in intermediate SYNTAX and 0.74±0.07 in high SYNTAX score. The mean MPI was significantly (p<0.05) elevated with increased SYNTAX score. A positive significant correlation (r=0.985; p=0.001) was found between MPI with SYNTAXscore. Higher value of SYNTAX score (>22) had a 2.29 times increase (95%CI 0.16 to 33.70%) in odds of having CAD. A subject with diabetes mellitus had 1.52 times increase (95%CI 2.02 to 21.54%) in odds having CAD. Others factors are not significantly associated with CAD in Multiple regression models.Conclusion: The MPI value measured by Doppler is a cheap, radiation free, available noninvasive method and may be considered as an additional risk stratification tool beyond other investigations.University Heart Journal Vol. 13, No. 1, January 2017; 3-7
Evaluation of High Density Lipoprotein Cholesterol Concentrations among Elderly Ischaemic Stroke Patients
Authors: Ara Kazi Jannat , Ali Masum Abu Shams Md Hasan , Saleheen Md Shafiqus , Kader Sheikh Abdul , Alam Sk Mahbub , Shahidullah Md , Ullah Akm Anwar , Fatema Nilufar
Published: June 2018

Stroke is an alarming health hazard all over the world as well as in Bangladesh and one of the leading causes of mortality and morbidity. There is a well-established inverse relation between serum concentrations of high density lipoprotein cholesterol (HDL-c) and the risk of coronary heart diseases but it is not a welldocumented risk factor for stroke. This study was done to evaluate of the HLD-c concentration among elderly ischaemic stroke patients. This cross sectional study was conducted in Out Patient department (OPD) stroke clinic and Indoor of the department of neurology, BSMMU, Dhaka from July 2015 to June 2016. A total 200 patients suffering from ischaemic stroke within the range of 61-95 years of age of both sexes with TIA, and hemorrhagic stroke were included. Patient with Stoke after one month of onset, cases with anti-lipid drugs were excluded. Male and female ratio was 1.95:1. Mean age was 68.4±8.24 years. 75 (52.8%) patients had hypertension, 20 (14.1%) had diabetes mellitus,10 (7.0%)patients had atrial fibrillation,8(5.6%)had ischemic heart disease. 44 (31.0%) patients had smoking habit ,mean total cholesterol was 190.7±56.0 mg/dl, mean HDL was36.9±8.4mg/dl, mean LDL was123.9±38.8mg/dl and mean Triglyceride was 175.9±70.5 mg/dl. HDL level gradually decreased according to the increment of age. HDL-c is low in elderly ischaemic stroke patient.University Heart Journal Vol. 13, No. 1, January 2017; 8-12
Lymphatic involvement in Chikungunya patient in Cardiovascular Practice
Authors: Ahmed Khurshed , Hoque Harisul , Rahman Fazlur , Arzu Jahanara , Mahmood Manzoor , Zaman SM Mustafa , Banerjee Sajal K , Ahsan Syed Ali , Ahmed Choudhury Meshket , Habib SM Ahsan , Rahman Md Mukhlesur , Khan Md Saif Ullah , Fatema Nilufar
Published: June 2018

Chikungunya virus (CHIKV) is an RNA alphavirus of the Togaviridae family that produces an acute febrile illness in humans followed by Joint pain, Itchy rash and leg swelling. This emerging virus has caused several large outbreaks in parts of Africa, Asia, and the Indian Ocean Islands and more recently in the Caribbean. This study was done from December 2015 to November 2016 on 24 confirmed Chikungunya patients with leg swelling. Peripheral vascular duplex study was done in every patients to find out the cause of leg swelling. Unilateral leg swelling 83% and Bilateral leg swelling 17%. Lower limb vascular Duplex was done in all patients. Moderate resersible lymphatic oedema in subcutaneous tissue of lower limb was found in 22 patients only. 2 patients had cellulites with mild lymphatic swelling. DVT was absent. There was mild reduction of peak systolic arterial flow in 13 patients which is secondary to pressure effect of lymphedema and leg swelling. 16 patients had non tender lymphadenopathy (>1cm in diameter), 2 had tender lymphadenopathy in inguinal region and no enlarged lymph glands was observed in rest of the 6 patients. 6 patients had neutropenia and 8 had lymphopenia. Gradual improvement of symptoms was observed with conservative treatment. Lymphedema is reversible and conservative therapy is appropriate. And Non tender lymphadenopathy does not require treatment.University Heart Journal Vol. 13, No. 1, January 2017; 13-16
The Effect of Preoperative Pulmonary Arterial Hypertension on Incidence of Postoperative Atrial Fibrillation after Surgical Closure of Atrial Septal Defect (Secundum)
Authors: ManzurulAlam AKM , Ahmed Istiaq , Ahmed Manzil , Ashraf Mohammad , Hossaim Mamun , Rahman Mizanur , Reza Mohashin
Published: June 2018

Background: Atrial tachyarrhythmias are common among adults with ASD and contribute to substantial morbidity. Atrial flutter and atrial fibrillation are well-described complications of atrial septal defect (ASD) and are associated with substantial morbidity. The cause of AF in ASD is multifactorial in nature. It has been proposed that it is related to atrial dilatation, the increase in pulmonary pressure, and ventricular dysfunction. Early surgical intervention may reduce the long-term risk of developing atrial arrhythmias. Studies demonstrated that cardiac remodeling occurred after closure of an ASD, even in older patients. This study aimed to find out the pulmonary hypertension (PAH) as a predictor of postoperative atrial fibrillation in patients after surgery for secundum type atrial septal defect closure.Methods: This Prospective Observational Study carried out in department of cardiac surgery, National Institute of Cardiovascular Disease (NICVD) and Hospital, Dhaka, Bangladesh during the period of July, 2015 to June, 2016. Total 54 patients are taken and then grouped into group A and group B. Each group contains 27 patients. Group A include Patients with ASD secundum without PAH. Group B Patients with ASD secundum with PAH. All patients were evaluated with M-mode, 2D and color Doppler transthoracic echocardiography and ECG before operation, at discharge, after one month and at 3 months follow-up. Statistical analysis of the results was obtained by windows based computer software with statistical package for the social sciences program (SPSS version 21).Results: To compare atrial fibrillation postoperative at discharge and postoperative after 1 and 3 months follow-up it was found In group B 8 (29.62%) patients had AF postoperatively, during discharge 8 (29.62%) patients had AF, after 1 month 7 (25.93%) patient had AF, after 3 months 6 (22.22%) patients had AF. No AF was found in Group A patients during postoperatively, during discharge, after 1 month & 3 months follow up. Statistical significant difference was found in between two groups (p<0.05).Conclusion: The surgical correction of atrial septal defect (ASD) is safe and effective procedure. Our studyshowed that the haemodynamic and electrophysiological results of the surgical repair of ASD secundum was superior before the development of pulmonary arterial hypertension. After surgical correction of ASD secundum raised pulmonary artery pressure became lower gradually. Atrial fibrillation developed in patient group with pulmonary arterial hypertension in postoperative period remain persistent in most patients in the follow up period, few converted to sinus rhythmUniversity Heart Journal Vol. 13, No. 1, January 2017; 17-20
Clinical Outcomes for Radial Artery Versus Saphenous Vein in Coronary Artery Bypass Graft Surgery
Authors: Alam AKM Manzurul , Ahmed Istiaq , Ahmad Manzil , Mohashinreza Md , Hossain Mamun , Rahman Mizanur , Sirazi Saiful Islam
Published: June 2018

Aims: The aim this study was to see the clinical outcome of coronary artery bypass grafting (CABG) in patients of coronary artery disease and to compare the patients revascularisedwith left internal mammary artery (LIMA) and radial artery (RA) group with LIMA and reverse saphenous venous group(RSVG) group.Methods:Between March 2011 and November 2015, 200 patients underwent isolated CABG and were randomized in 1:1 fashion to receive either LIMA and RA grafts or LIMA and SVGs.All patients were operated in department of cardiac surgery, National Institute of Cardiovascular Disease (NICVD) and Hospital, Dhaka, Bangladesh and Al Helal Specialized Hospital, Mirpur- 10, Dhaka.Written consent was obtained from all patients prior to the procedure. Patients were followed for 4 years since index surgery for the composite of cardiovascular mortality, non-fatal myocardial infarction and need for repeat myocardial revascularization (either surgical or percutaneous). Data were collected either by phone or during visits. The data were entered into an electronic database (Access, Microsoft) and analyzed using the SPSS 16.0 software (SPSS Inc.).Results: This study reports on our series of 200 patients undergoing isolated, primary CABG using LIMA grafting and the SVG in one group, and RA grafting as the second conduit in the second group. Our data indicate that there is no difference in the long-term clinical outcome between the patients in whom RA or SVG is used as a second conduit, beside LIMA.Conclusion: In this small randomized study our data indicate that there is no difference in the 4 year clinical outcomes in relatively young patients between those having a RA or a saphenous vein graft used as a second conduit, beside LIMA, for surgical myocardial revascularization.University Heart Journal Vol. 13, No. 1, January 2017; 21-25
A Giant Arteriovenous Malformation Involving Tongue, Neck and Face
Authors: Khan Md Saif Ullah , Rahman Md Mahbubur , Adhikary Dipal Krishna
Published: June 2018

Abstract not availableUniversity Heart Journal Vol. 13, No. 1, January 2017; 26-28
Takayasu’s Arteritis Concurrent with Marfan syndrome Associated with Severe Renovascular Hypertension
Authors: Sheikh Naveen , Safiuddin Mohammad , Tanni Afia Zainab , Sultana Nahid , Sultan Md Ashraf Uddin , Chowdhury MSI Tipu
Published: June 2018

Marfan syndrome (MS) is a dominantly inherited connective tissue disorder characterized by arachnodactyly, tall stature, the presence of aortic aneurysm, and lens dislocation. Takayasu’s arteritis(TA) is an inflammatory disease often affecting the ascending aorta and aortic arch, causing obstruction of the aorta and its major arteries. The disease commonly presents in the 2nd or 3rd decade of life, often with a delayed diagnosis. The disease is progressive and there is no definitive therapy. We report an unusual case of concomitant Takayasu’s arteritis and Marfan syndrome manifesting bilateral renal artery stenosis and aortic root dilatation. The patient had severe hypertension. The simultaneous presence of TA and MS could be a coincidence, however; the pathogenesis of TA might be linked with autoimmunity induced by abnormal extracellular matrix protein derived from the genetic mutations in MS.University Heart Journal Vol. 13, No. 1, January 2017; 29-32
A Multiple Myxoma in Right Ventricle and Right Atrium
Authors: Nahar Samsun , Uddin Helal , Begum Fatema , Momenuzzaman - , Khan KN
Published: June 2018

We are reporting a case of multiple myxoma in right atrium and right ventricle in a 55 years male. Dignosis of myxomas were incidental when he was under evaluation for heart failure.Diagnosis was done by both echocardiography and CT scan of chest. Myxomas originating from the right ventricle and right atrium are even less common and can present unusual diagnostic and therapeutic challenges.University Heart Journal Vol. 13, No. 1, January 2017; 33-35
Diffuse Venous Malformation of Perineum
Authors: Khan Md Saif Ullah , Islam Md Faridul , Adhikary Dipal Krishna
Published: June 2018

Abstract not availableUniversity Heart Journal Vol. 13, No. 1, January 2017; 36-37
Investigations of fast processes by X-ray diffraction methods at the Siberian Synchrotron and Terahertz Radiation Center
Authors: Aulchenko V M , Zhulanov V V , Kulipanov G N , Ten K A , Tolochko B P , Shekhtman L I
Published: June 2018

A unique instrumentation complex that includes wigglers, X-ray position sensitive detectors, diffractometers, and explosion chambers and enables a 73 ps X-ray diffraction time resolution (exposure time) has been developed at the Siberian Synchrotron and Terahertz Radiation Center, a research collaboration operating at the Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences. A number of techniques have been developed and implemented with which nanosecond-resolution investigations of the nucleation and growth dynamics became possible for the first time for diamond and metal nanoparticles under explosion and shock wave conditions. Studies with millisecond resolution of the structural transformation dynamics of chemical reactions, investigations of the kinetics of self-propagating high-temperature synthesis, and obtaining information on the state of catalysts are also among the new possibilities developed.
Studies of ion and neutral beam physics and technology at the Budker Institute of Nuclear Physics, SB RAS
Authors: Belchenko Yu I , Davydenko V I , Deichuli P P , Emelev I S , Ivanov A A , Kolmogorov V V , Konstantinov S G , Krasnov A A , Popov S S , Sanin A L , Sorokin A V , Stupishin N V , Shikhovtsev I V , Kolmogorov A V , Atlukhanov M G , Abdrashitov G F , Dranichnikov A N , Kapitonov V A , Kondakov A A
Published: June 2018

An overview of studies into the physics and technology of ion and neutral beams carried out at the Bunker Institute of Nuclear Physics, SB RAS since 1960 up to now is presented. These studies were initiated by Academician G I Budker for the charge-exchange injection of particles into storage rings. Subsequently, a whole series of ion sources were created and particle beams were produced for applications in accelerators and plasma devices for plasma heating and diagnostics.
Multiple-mirror trap: a path from Budker magnetic mirrors to linear fusion reactor
Authors: Burdakov A V , Postupaev V V
Published: June 2018

This review is focused on multiple-mirror traps for high-temperature plasma confinement that were proposed by Budker, Mirnov, and Ryutov and independently by Logan, Lichtenberg, and Lieberman in the early 1970s. The proposed magnetic system solved problems with the kinetic instabilities of classical open traps and significantly increased the plasma life-time. We review the history of this field and discuss its achievements and prospects.
Industrial electron accelerators developed at the Budker Institute of Nuclear Physics, SB RAS
Authors: Bryazgin A A , Kuksanov N K , Salimov R A
Published: June 2018

In the early 1960s, work on developing industrial high-power electron accelerators was initiated by Academician G I Budker, the founder and director of the Institute of Nuclear Physics (currently, Budker Institute of Nuclear Physics, BINP). This review describes the arrangements and principles of operation of high-power electron accelerators of the ELV and ILU series designed and constructed at the BINP. Since 1972, 170 ELV and more than 50 ILU machines have been shipped to many countries around the world, most of them still operational. International Atomic Energy Agency surveys rate the BINP as one of the few well-trusted global suppliers of reliable industrial accelerators.
How do primary care health professionals engage patients in the goal of CVD risk reduction?
Authors: Stedeford Helen , Black Georgia
Published: June 2018

Background

Primary prevention of CVD is a key UK health strategy; its success depends on individuals with high risk becoming motivated to adopt a scientifically valid risk reduction strategy. This is assumed to be the automatic outcome of risk assessments by much of the literature, yet little is known about whether or how this happens in practice.

Aim

This qualitative study sought to explore professionals’ experience of discussing CVD risk with patients.

Method

Semi-structured interviews were conducted with 20 primary care staff, including GPs, practice nurses and allied health professionals. Interview transcripts underwent thematic analysis using an inductive approach.

Results

Professionals’ descriptions of patient responses to high risk status fell along a spectrum from full engagement with risk reduction to overt non-engagement. Erroneous lay beliefs regarding CVD risk are reportedly common and influential. Expert norms of individual agency regarding health and the future are often not shared by those in disadvantaged circumstances.

Conclusion

Negotiating a shared risk reduction agenda is often a long-term process shaped by specific clinician-patient relationships and wider social contexts. An accessible resource which examines common lay beliefs and scientific evidence could help improve health literacy and uptake of risk reduction strategies. The impact of environmental and social factors on health-related behaviour deserves greater attention.
A Critical Look at the State of Tourism Studies in Anthropology in Latin America and the Caribbean
Authors: Montero Carla Guerrón
Published: June 2018

Anthropology has expanded by including within its purview the study of tourism. Although tourism is a subject of relative recent concern among anthropologists, anthropological scholarship on tourism has contributed greatly to tourism studies. In this conceptual article, I offer a preliminary study of the state of tourism studies and anthropology in Latin America and the Caribbean, based on a survey of literature published in English, Spanish, and Portuguese in Latin America, the US, and Europe. My primary concern is to discuss the relationship between tourism studies and anthropology in studying Latin America and the Caribbean. I conclude proposing that for the anthropology of tourism to advance towards more vibrant development, there needs to be an equal and multilingual dialogue among scholars, practitioners, and tourism stakeholders in the Global North and South, as well as a conceptualization of tourism as one aspect of a larger spectrum of movements, representations, and practices.
Unusual Venous Drainage Of The Common Facial Vein. A Morphologycal Study
Authors: Ferreira Arquez Humberto , Granados- Torres Sergio Iván
Published: June 2018

Background: Anatomical knowledge of the facial vasculature is crucial not only for anatomists but also for oral and maxillofacial surgery, plastic surgeon, otorhinolaryngologists. Access pathways, pedicled and free flap transfer, and explantation and transplantation of total faces are based on the proper assessment and use of the facial veins and arteries. The anatomical variations reported in the present study confirms the need for preoperative vascular imaging for sure good venous outflow for the free flap survival.

Aims: The aim of the present study was to describe a rare anatomical variation of the common facial vein which not been previously described.

Methods and Findings: Head and neck region were carefully dissected as per standard dissection procedure, studied serially during the years 2013-2017 in 15 males and 2 females, i.e. 34 sides, embalmed adults cadavers with different age group, in the laboratory of Morphology of the University of Pamplona. In 33 sides (97 %) of the cases the anterior facial vein (FV) terminated into the internal jugular vein via the common facial vein (CFV) as per standard anatomic description. The right common facial vein in one side (3%) was found to drain into the contralateral internal thoracic vein and contralateral pericardiophrenic vein. Remarkable communications with the external jugular vein, the internal jugular vein, the anterior jugular vein, and left brachiocephalic vein. The length of the right common facial vein from the level of its formation till its termination in the contralateral pericardiophrenic and internal thoracic vein was about 22.75 cm. The venous drainage pattern on the left side of the face was found to be normal. 

Conclusion: The existence of this anatomical variation among others supposes a double edge sword in the medical practice with its own opportunities and risks, especially in the surgical treatment; therefore, we need to study with more strictness these possibilities with the aim of facilitate this practices, and improve the life quality of our patients.
Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave
Authors: Piantschitsch Isabell , Vršnak Bojan , Hanslmeier Arnold , Lemmerer Birgit , Veronig Astrid , Hernandez-Perez Aaron , Čalogović Jaša
Published: June 2018

We performed 2.5D magnetohydrodynamic (MHD) simulations showing the propagation of fast-mode MHD waves of different initial amplitudes and their interaction with a coronal hole (CH), using our newly developed numerical code. We find that this interaction results in, first, the formation of reflected, traversing, and transmitted waves (collectively, secondary waves) and, second, in the appearance of stationary features at the CH boundary. Moreover, we observe a density depletion that is moving in the opposite direction of the incoming wave. We find a correlation between the initial amplitude of the incoming wave and the amplitudes of the secondary waves as well as the peak values of the stationary features. Additionally, we compare the phase speed of the secondary waves and the lifetime of the stationary features to observations. Both effects obtained in the simulation, the evolution of secondary waves, as well as the formation of stationary fronts at the CH boundary, strongly support the theory that coronal waves are fast-mode MHD waves.
Photometric and Spectroscopic Observations of GRB 140629A
Authors: Xin Li-Ping , Zhong Shu-Qing , Liang En-Wei , Wang Jing , Liu Hao , Zhang Tian-Meng , Huang Xiao-Li , Li Hua-Li , Qiu Yu-Lei , Han Xu-Hui , Wei Jian-Yan
Published: June 2018

We present our optical photometric and spectroscopical observations of GRB 140629A. A redshift of z = 2.275 ±0.043 is measured through the metal absorption lines in our spectroscopic data. Using our photometric data and multiple observational data from other telescopes, we show that its optical light curve is well interpreted with the standard forward shock models in the thin shell case. Its optical–X-ray afterglow spectrum is jointly fitted with a single power-law function, yielding a photon index of −1.90 ± 0.05. The optical extinction and neutral hydrogen absorption of the gamma-ray burst (GRB) host galaxy are negligible. The fit to the light curve with the standard models shows that the ambient density is 60 ± 9 cm−3 and the GRB radiating efficiency is as low as ∼0.24%, likely indicating a baryonic-dominated ejecta of this GRB. This burst agrees well with the

relation, but confidently violates those empirical relations involving geometric corrections (or jet break time). This gives rise to an issue of the possible selection effect on these relations since the jet opening angle of this GRB is extremely narrow (0.04 rad).
A Cavity of Large Grains in the Disk around the Group II Herbig Ae/Be Star HD 142666
Authors: Rubinstein A. E. , Macías E. , Espaillat C. C. , Zhang K. , Calvet N. , Robinson C.
Published: June 2018

Herbig Ae/Be (HAeBe) stars have been classified into Group I or Group II, and were initially thought to be flared and flat disks, respectively. Several Group I sources have been shown to have large gaps, suggesting ongoing planet formation, while no large gaps have been found in the disks of Group II sources. We analyzed the disk around the Group II source, HD 142666, using irradiated accretion disk modeling of the broadband spectral energy distribution along with the 1.3 mm spatial brightness distribution traced by Atacama Large Millimeter and Submillimeter Array (ALMA) observations. Our model reproduces the available data, predicting a high degree of dust settling in the disk, which is consistent with the Group II classification of HD 142666. In addition, the observed visibilities and synthesized image could only be reproduced when including a depletion of large grains out to ∼ 16 au in our disk model, although the ALMA observations did not have enough angular resolution to fully resolve the inner parts of the disk. These results may suggest that some disks around Group II HAeBe stars have cavities of large grains as well. Further ALMA observations of Group II sources are needed to discern how commonly cavities occur in this class of objects, as well as to reveal their possible origins.
Coincident Detection Significance in Multimessenger Astronomy
Authors: Ashton G. , Burns E. , Canton T. Dal , Dent T. , Eggenstein H.-B. , Nielsen A. B. , Prix R. , Was M. , Zhu S. J.
Published: June 2018

We derive a Bayesian criterion for assessing whether signals observed in two separate data sets originate from a common source. The Bayes factor for a common versus unrelated origin of signals includes an overlap integral of the posterior distributions over the common-source parameters. Focusing on multimessenger gravitational-wave astronomy, we apply the method to the spatial and temporal association of independent gravitational-wave and electromagnetic (or neutrino) observations. As an example, we consider the coincidence between the recently discovered gravitational-wave signal GW170817 from a binary neutron star merger and the gamma-ray burst GRB 170817A: we find that the common-source model is enormously favored over a model describing them as unrelated signals.
Common Envelope Shaping of Planetary Nebulae
Authors: García-Segura Guillermo , Ricker Paul M. , Taam Ronald E.
Published: June 2018

The morphology of planetary nebulae emerging from the common envelope phase of binary star evolution is investigated. Using initial conditions based on the numerical results of hydrodynamical simulations of the common envelope phase, it was found that the shapes and sizes of the resulting nebula are very sensitive to the effective temperature of the remnant core, the mass-loss rate at the onset of the common envelope phase, and the mass ratio of the binary system. These parameters are related to the efficiency of the mass ejection after the spiral-in phase, the stellar evolutionary phase (i.e., RG, AGB, or TP-AGB), and the degree of departure from spherical symmetry in the stellar wind mass-loss process itself, respectively. It was also found that the shapes are mostly bipolar in the early phase of evolution, but that they can quickly transition to elliptical and barrel-type shapes. Solutions for nested lobes are found where the outer lobes are usually bipolar and the inner lobes are elliptical, bipolar, or barrel-type, a result due to the flow of the photo-evaporated gas from the equatorial region. Also, the lobes can be produced without the need for two distinct mass ejection events. In all the computations, the bulk of the mass is concentrated in the orbital or equatorial plane, in the form of a large toroid, which can be either neutral (early phases) or photoionized (late phases), depending of the evolutionary state of the system.
The taxonomic status of Petropedetes newtonii (Amphibia, Anura, Petropedetidae)
Authors: Sánchez-Vialas Alberto , Calvo-Revuelta Marta , Castroviejo-Fisher Santiago , De la Riva Ignacio
Published: June 2018

The taxonPetropedetesnewtoniiwas described in 1895 by Bocage, from Bioko Island (Equatorial Guinea). This taxon, whose holotype is lost, has been misidentified since Boulenger’s revision of the genus in 1900 and its relationships with other taxa (P.vulpiaeandP.johnstoni) is confusing. Currently,P.newtoniiis considered a synonym ofP.johnstoni. In this work, by revising morphological characters of non-webbedPetropedetesof Bioko, we demonstrate the morphological singularity of these specimens with respect toP.johnstoniandP.vulpiaeand their association with the namePetropedetesnewtonii. Consequently, we provide the subsequent designation of a neotype ofP.newtoniiand revalidate this species from its synonym withP.johnstoni.
Résonances des traumatismes haïtiens chez des jeunes montréalais ex-membres de gang
Authors: Lacroix Olivier , Gilbert Sophie
Published: June 2018

La prise en compte des résonances psychiques des traumatismes collectifs est récente. Cet article s’intéresse à l’expérience de jeunes migrants de deuxième génération au Québec. Des échos sont mis en évidence entre le parcours d’anciens membres de gang de rue et l’Histoire de leur pays d’origine : Haïti. Trois récits de vie constituent les données recueillies, puis analysées selon une perspective psychanalytique grâce à la méthode des « catégories conceptualisantes ». Les résultats mettent en lumière deux mouvements distincts : la recherche active des origines et la transmission inconsciente des conflits. Ces résultats sont discutés en lien avec la littérature concernant les résonances traumatiques actuelles de l’histoire d’Haïti et les processus identitaires adolescents. Enfin, les auteurs proposent d’adapter l’accompagnement offert à cette population selon cette compréhension des désirs manifestes et des enjeux sous-jacents.
Il était une fois H. ou comment se fabriquent des djihadistes ?
Authors: Ben Rejeb Khalil , Vinay Aubeline , Rafrafi Rym
Published: June 2018

Il s’agit d’une réflexion sur le phénomène du fanatisme à partir de l’histoire d’un jeune garçon dont le parcours a été bousculé par de nombreux événements fragilisants. Malgré son niveau intellectuel, son caractère jovial et sa capacité à résister à différentes situations traumatiques, ce jeune s’est laissé finalement engloutir par le courant salafiste qui a su voir en lui une personne en désarroi et en quête de repères et d’identité. Cette illustration reflète la complexité des facteurs (psychologiques, socio-économiques, etc.) mis en jeu dans « la fabrication » de djihadistes et l’embrigadement des individus.
La co-construction d’une alliance de travail entre formateurs et stagiaires des Écoles de la deuxième chance (E2C) peut contribuer à instaurer entre eux une relation de confiance
Authors: Blanchard Serge , Sontag Jean-Claude
Published: June 2018

Au cours de séances d’échanges de pratiques professionnelles, les formateurs de l’É2C de l’Essonne ont souligné l’importance d’instaurer une relation de confiance avec leurs stagiaires L’importance de la qualité de la relation entre aidant et aidé a d’abord été abordée dans le cadre des psychothérapies puis dans le cadre du conseil en orientation et, plus récemment, dans le cadre de l’activité enseignante. Cette relation de confiance entre formateurs et stagiaires des É2C peut être étayée par la co-construction d’une alliance de travail (champ de l’aide au choix professionnel) et d’une alliance éducative (champ de l’activité enseignante).
Ces stagiaires sortis de l’École de la deuxième chance, que sont-ils devenus ?
Authors: Fontespis-Loste Valérie , Tessaud Sophie
Published: June 2018

Pour répondre à cette question essentielle en vue de cerner l’utilité des E2C et donc assurer leur devenir, le présent travail a eu recours à trois sources de données ici analysées : le réseau des E2C France et particulièrement le réseau des E2C Ile de France, des formateurs d’E2C interrogés dans leurs souvenirs de stagiaires qui les ont marqués, des entretiens avec d’anciens stagiaires d’une E2C particulière, celle de Ris-Orangis. Les données recueillies font plus particulièrement apparaître deux traits : les anciens stagiaires qui ont terminé leur formation avec ou sans proposition d’embauche, avec ou sans projet disent à la quasi-unanimité qu’ils en sortent différents et que ce qui les a marqués, c’est « l’école du lien » que constitue pour eux une E2C, notamment à travers les relations stagiaires-formateurs.
Engagement organisationnel et modèle général de la rationalité : un apport conceptuel
Authors: Renaud Emmanuel
Published: June 2018

Depuis 1960, le concept de fidélité organisationnelle (« Organisational commitment »), est couramment utilisé pour catégoriser la propension que peut avoir un employé à rester en place dans la même organisation. Les articles dans le domaine de la fidélité organisationnelle font de ce concept une attitude tridimensionnelle, prenant en compte ses composantes affectives, utilitaristes et normatives. Pour autant, aucun cadre théorique unifié n’est capable à ce jour de réunir ces trois dimensions. Afin de donner un tel cadre à la théorie de l’engagement organisationnel, cadre qui permettrait de dépasser les tentatives précédentes de synthèse (syncrétique) de différentes théories, il semble intéressant d’utiliser la théorie générale de la rationalité (TGR), présentée en France par le sociologue Raymond Boudon. En postulant que chaque individu a de bonnes raisons d’agir, et que celles-ci peuvent être morales, cognitives ou utilitaristes, à l’intérieur d’un contexte spécifique, Raymond Boudon offre à la théorie de l’engagement organisationnel un paradigme à la fois utile et raisonnable. Les apports précédents peuvent alors être intégrés, pour la plupart, dans cette théorie de l’acteur, tout en dépassant l’approche quasi uniquement psychologisante des recherches contemporaines. Cette nouvelle perspective théorique sur l’engagement organisationnel donne aux acteurs des logiques compréhensibles, tant sur le court que sur le long terme, tout en bénéficiant des apports théoriques antérieurs.
American Fundamentalism in the New Media
Authors: Yegen Ceren
Published: June 2018

Evangelists, conservative Protestants, are an important majority in the United States. Baptists and Methodists, alleged to be different groups of American Protestants like Evangelists, perform a number of fundamentalist activities through social media. Related groups use hypertextual, intertextual, and current narrative stratagies in social media (Twitter, Facebook, etc.). Therefore, in this study, Awakening Evangelism (@EvangelismDaily), Baptist News Global (@baptist_news), and WV United Methodist (@WVUMC) who support the groups mentioned in the study (Evangelists, Baptists, and Methodists) and report USA as location's Twitter accounts' shares were examined. Hereby, how the American fundamentalism realized through new media was researched.
Designing Information Systems to Facilitate Civil-Military Cooperation in Disaster Management
Authors: Vorraber Wolfgang , Lichtenegger Gerald , Brugger Julia , Gojmerac Ivan , Egly Maria , Panzenböck Katrin , Exner Erik , Aschbacher Helmut , Christian Markus , Voessner Siegfried
Published: June 2018

The efficient management of natural and man-made disasters typically represents a major information exchange and coordination challenge, as in most countries a number of organizations are involved in all phases of the disaster management cycle. In this article, the authors introduce the approach of the Austrian national project INKA, which aims at improving civil-military interoperability between the Austrian Armed Forces and the corresponding federal state level institutions through the introduction of IT-supported information exchange without media discontinuities. Apart from providing a comprehensive overview of their interdisciplinary research methodology, the authors present a number of important results which are based on a detailed qualitative assessment of stakeholder requirements. Furthermore, they provide first insights into designing a valuable IT-platform for civil-military interoperability in Austria.
Towards a Mobile Augmented Reality System for Emergency Management
Authors: Croatti Angelo , Ricci Alessandro , Viroli Mirko
Published: June 2018

The impressive development of wearable computing and augmented/mixed reality technologies that has been occurring in recent years allows for devising ICT systems that can bring a disruptive innovation in how emergency medical operations take place. In this paper the authors describe first explorations in that direction, represented by a distributed collaborative system called SAFE (Smart Augmented Field for Emergency) for teams of rescuers and operators involved in a rescue mission. SAFE is based on the integration of wearable computing and augmented reality technologies with intelligent agents and multi-agent systems.
Processing Big Data for Emergency Management
Authors: Akerkar Rajendra
Published: June 2018

Emergencies are typically complex problems with serious consequences that must be solved in a limited amount of time to reduce any possible damage. Big data analysis leads to more assured decision making and better decisions can mean greater operational efficiencies, cost reductions and reduced risk. In this chapter, we discuss some issues on tackling emergency situation from the perspective of big data processing and management, including our approach for processing social media content. Communications during emergencies are so plentiful that it is necessary to sift through enormous data points to find information that is most useful during a given event. The chapter also presents our ongoing IT-system that processes and analyses social media data to transform the excessive volume of low information content into small volume but rich content that is useful to emergency personnel.
Communicating Location and Geography in Emergency Response
Authors: Bergstrand Fredrik , Landgren Jonas , Nuldén Urban
Published: June 2018

Response organizations often face serious challenges as a result of communication problems during emergency events. This can to a large extent be traced to the tradition of verbal communication in this context. Issues in communication translate to matters of sensemaking, planning, and collaboration among distributed response teams. This paper reports from an interview study with emergency managers regarding the work conducted during a wildfire. Boundary objects and sensemaking were used as analytical lenses, emphasizing how outcome of sensemaking activities are used at different sites and interpreted differently in different work settings. Challenges of verbally exchanging complex information regarding location and geography, between individuals and groups, make us reconsider the role of technology and its potential to support efficient interactions, which will limit ambiguity and uncertainty, and increase accuracy, articulation, and persistence.
Burst Pipes and Leaky Roofs
Authors: Chaudron Gerald
Published: June 2018

Libraries can face different kinds of emergency but planning for every contingency is an immense challenge. Overwhelmed with books and articles that focus mainly on the catastrophic events, librarians tend to place more emphasis on managing the risk of hurricanes and floods leaving then underprepared for the more mundane and common emergencies like burst pipes and leaky roofs. This chapter uses two case studies of small water emergencies to examine how each library managed those emergencies and what lessons were learned. They show that while both incidents were water-related, they were very different in terms of source, size, impact, recovery time, and frequency. Libraries should be planning for small disasters first, and then scaling up preparation to account for the larger events, rather than the reverse. More libraries may do such planning if they are preparing for a probable scenario rather than one that is only a possibility.
Sharing Radiation Measurements Through Social Media
Authors: Segault Antonin , Tajariol Federico , Ishigaki Yang , Roxin Ioan
Published: June 2018

Radiation measurements are key information for risk communication in post-nuclear accident situations. Among the different social media platforms, Twitter offers automated accounts which have been used to share the readings, but often in an incomplete way from the perspective of data sharing and risk communication between citizen and radiation experts. In this paper, the authors investigate the requirements for radiation measurements, by analysing the perceived usefulness of several metadata items that may go along the measurement itself. They carried out a benchmark of existing usages, and conducted a survey with both experts and lay citizens. They thus produced a set of guidelines regarding the metadata that should be used. Furthermore, they created a prototype of a software tool to publish complete measurements and metadata containing suitable information for both experts and citizen based on the requirements.
Working Capital Management and Firms' Profitability in the Midst of an Economic Crisis
Authors: Axiotis Dimitris , Hyz Alina , Kalantonis Petros
Published: June 2018

The purpose of this article is to identify the relationship between working capital management and corporate performance in adverse economic circumstances. The results show positive relationship between profitability and cash conversion cycle, firm's size, growth and leverage and negative relationship between profitability and components of cash conversion cycle. Analysing the impact of the crisis it can observe that the companies can increase their profitability by reducing the period of credit granted to customers. The significance of this study stems from the fact that it sheds light for the desirable firms' policy during the period of financial constraints. Prior research on this subject has looked into various issues related to the linkage between working capital management and profitability, however, none has examined what this relationship looks like following a prolonged economic crisis.