bluuebunny/crossref_metadata_2025_split huggingface dataset:
APEX observations of ortho-H2D+ towards dense cores in the Orion B9 filament
Authors: Miettinen O. 
Published: January 2020

Context. Initial conditions and very early stages of star formation can be probed through spectroscopic observations of deuterated molecular species
Aims. We aim to determine the ortho-H2D+ properties (e.g. column density and fractional abundance with respect to H2) in a sample of dense cores in the Orion B9 star-forming filament, and to compare those with the previously determined source characteristics, in particular with the gas kinetic temperature, [N2D+]/[N2H+] deuterium fractionation, and level of CO depletion.
Methods. We used the Atacama Pathfinder EXperiment (APEX) telescope to observe the 372 GHz o-H2D+(JKa, Kc = 11, 0−11, 1) line towards three prestellar cores and three protostellar cores in Orion B9. We also employed our previous APEX observations of C17O, C18O, N2H+, and N2D+ line emission, and 870 μm dust continuum emission towards the target sources.
Results. The o-H2D+(11, 0−11, 1) line was detected in all three prestellar cores, but in only one of the protostellar cores. The corresponding o-H2D+ abundances were derived to be ~ (12−30) × 10−11 and ~ 6 × 10−11. Two additional spectral lines, DCO+(5−4) and N2H+(4−3), were detected in the observed frequency bands with high detection rates of 100 and 83%, respectively. We did not find any significant correlations among the explored parameters, although our results are mostly consistent with theoretical expectations. Also, the Orion B9 cores were found to be consistent with the relationship between theo-H2D+ abundance and gas temperature obeyed by other low-mass dense cores. The o-H2D+ abundance was found to decrease as the core evolves.
Conclusions. The o-H2D+ abundances in the Orion B9 cores are in line with those found in other low-mass dense cores and larger than derived for high-mass star-forming regions. The higher o-H2D+ abundance in prestellar cores compared to that in cores hosting protostars is to be expected from chemical reactions where higher concentrations of gas-phase CO and elevated gas temperature accelerate the destruction of H2D+. The validity of using the [o-H2D+]/[N2D+] abundance ratio as an evolutionary indicator, which has been proposed for massive clumps, remains to be determined when applied to these target cores. Similarly, the behaviour of the [o-H2D+]/[DCO+] ratio as the source evolves was found to be ambiguous. Still larger samples and observations of additional deuterated species are needed to explore these potential evolutionary indicators further. The low radial velocity of the line emission from one of the targeted prestellar cores, SMM 7 (~ 3.6 km s−1 versus the systemic Orion B9 velocity of ~ 9 km s−1), suggests that it is a chance superposition seen towards Orion B9. Overall, as located in a dynamic environment of the Orion B molecular cloud, the Orion B9 filament provides an interesting target system to investigate the deuterium-based chemistry, and further observations of species like para-H2D+ and D2H+ would be of particular interest.
Non-thermal desorption of complex organic molecules
Authors: Dartois E. , Chabot M. , Bacmann A. , Boduch P. , Domaracka A. , Rothard H. 
Published: January 2020

Aims. Methanol ice is embedded in interstellar ice mantles present in dense molecular clouds. We aim to measure the sputtering efficiencies starting from different ice mantles of varying compositions experimentally, in order to evaluate their potential impact on astrochemical models. The sputtering yields of complex organic molecules is of particular interest, since few mechanisms are efficient enough to induce a significant feedback to the gas phase.
Methods. We irradiated ice film mixtures made of methanol and carbon dioxide of varying ratios with swift heavy ions in the electronic sputtering regime. We monitored the evolution of the infrared spectra as well as the species released to the gas phase with a mass spectrometer. Methanol (12C) and isotopically labelled 13C-methanol were used to remove any ambiguity on the measured irradiation products.
Results. The sputtering of methanol embedded in carbon dioxide ice is an efficient process leading to the ejection of intact methanol in the gas phase. We establish that when methanol is embedded in a carbon-dioxide-rich mantle exposed to cosmic rays, a significant fraction (0.2–0.3 in this work) is sputtered as intact molecules. The sputtered fraction follows the time-dependent bulk composition of the ice mantle, the latter evolving with time due to the radiolysis-induced evolution of the bulk. If methanol is embedded in a carbon dioxide ice matrix, as the analyses of the spectral shape of the CO2 bending mode observations in some lines of sight suggest, the overall methanol sputtering yield is higher than if embedded in a water ice mantle. The sputtering is increased by a factor close to the dominant ice matrix sputtering yield, which is about six times higher for pure carbon dioxide ice when compared to water ice. These experiments are further constraining the cosmic-ray-induced ice mantle sputtering mechanisms important role in the gas-phase release of complex organic molecules from the interstellar solid phase.
Considerations regarding the specific tests applicable to electric motors with type of protection flameproof enclosure „d” and type of protection increased safety
Authors: Fotău Dragoş , Rad Marcel , Sălăşan Diana 
Published: January 2020

The purpose of this paper is to present the importance of the specific tests for electric motors with type of protection flameproof enclosure „d” and type of protection increased safety „e” designed to be used in explosive atmosphere.
Most of the equipment operating in potentially explosive atmospheres is represented by electric motors, which in most situations act on various other elements (e.g. pumps, valves, fans etc.).
Even if electric motors for explosive atmospheres are designed and manufactured following some of the same principles as the ones used for other electric machinery, they have certain particularities related to their field of use. Thus, a series of specific restrictions and tests are required to be considered in their case.
In order to verify explosion protection, the representative samples made available by explosion-protected equipment manufacturers are tested under the most unfavorable conditions that may occur in operation.
The use of numerical models as a modern tool in fire investigation
Authors: Şuvar Marius Cornel , Munteanu Laurenţiu , Nicola Aurelian 
Published: January 2020

Investigating the fire type events is characterized by a high degree of complexity, due to the fact that it has to find answers to aspects coming from multidisciplinary fields: technical-scientific, legal, organizational, psychological, etc. The management of the findings, the analyzed samples, and the resulting data implies a series of complex activities, based on the use of advanced procedures and techniques.
Fire investigation aims to determine the source of ignition and all the components that contribute to define the cause of the fire, to assess the motivations of the involved persons and to decipher the mechanism of heat transfer or burning processes that describes the propagation and development of a fire.
Often, in order to understand the mechanism of the pyrogenic phenomenon, the following approaches are used in the current practice: technical-scientific expertises, reconstruction of the event on the field or in the laboratory, sample analysis, and, last but not least, computer simulations.
This paper aims to highlight the role of the numerical models used in the field of fire safety, respectively in the elaboration of the post-event, technical-scientific expertises, by presenting some results obtained from the computer simulations, used to substantiate the fire mechanism and to formulate the conclusions.
β-Blocker-Intoxikation – auch im Zeitalter von ECMO eine echte Herausforderung für die Notfall- und Intensivmedizin
Authors: Schäflein Nathalie , Wengenmayer Tobias , Bode Christoph , Busch Hans-Joerg , Staudacher Dawid , Duerschmied Daniel 
Published: January 2020

ZusammenfassungEine 38-jährige Frau beging in suizidaler Absicht eine Mischintoxikation mit führender β-Blocker-Intoxikation in letaler Dosis. Bereits bei Auffinden der Patientin bestand eine schwere Kreislaufinsuffizienz, die mit Katecholaminunterstützung nur ungenügend behoben werden konnte. Aus diesem Grund kam es rasch zu einer Reanimationssituation infolge pulsloser elektrischer Aktivität (PEA) bzw. Asystolie durch die induzierte Kardioplegie. Mithilfe von kardiopulmonaler (CPR) und extrakorporaler Reanimation (ECLS, extracorporal life support) sowie leitlinienadaptierter Therapie der Intoxikation, insbesondere Inotropiesteigerung, die über β-Rezeptoren-unabhängige Mechanismen erzielt wird, konnte die schwere Kardioplegie überwunden werden. Nach zunächst erfreulicher Entwicklung verstarb die Patientin im Verlauf an irreversiblen thrombembolischen Komplikationen.
Überwachung der Strahlenexposition im OP mit Echtzeitmessungen: Möglichkeiten und Grenzen
Authors: Pedraza de Leistl Maria Consuelo , Silber Martin , Knez Peter , Adili Farzin 
Published: January 2020

Zusammenfassung
Hintergrund Die Überwachung von strahlenexponiertem Personal erfolgt in Deutschland mit amtlichen Personendosimetern. Kommerziell erhältliche Echtzeitdosimeter (EZD) lassen sich als Strahlenschutzdosimeter verwenden. Sie werden über der Röntgenschürze getragen und zeigen im Sekundenabstand die aktuell gemessene Ortsdosis an. Diese zeitnahe Einschätzung der Strahlenexposition ermöglicht es dem OP-Personal, durch ein angepasstes Verhalten die eigene Strahlenbelastung während der Eingriffe zu reduzieren. Ziel unserer Arbeit war die Prüfung der Messgenauigkeit der EZD und die Bestimmung der Streustrahlung für einzelne Mitglieder des Operationsteams.
Material und Methoden In einem gefäßchirurgischen Operationssaal, ausgestattet mit einem C-Bogen, wurden Messungen der Strahlendosis des OP-Teams mithilfe eines EZD-Systems prospektiv durchgeführt. Zunächst wurde die Kalibrierung der EZD am OP-Tisch mit einem Wasserphantom überprüft. Danach wurden Messungen während gefäßchirurgischer Operationen durchgeführt.
Ergebnisse Die Messwerte der einzelnen EZD zeigten bei der Kalibrierung deutliche Abweichungen untereinander, deshalb wurde für jedes EZD ein Korrekturfaktor errechnet. Es wurden insgesamt 55 Eingriffe bei 53 Patienten untersucht. Die durchschnittliche Dosis für den EZD-Operateur bei der EVAR (endovascular aortic repair, n = 11) betrug 9 ± 9 µSv (Bereich 3,6 – 50 µSv) und bei der TEVAR (thoracic EVAR, n = 6) 35 ± 49 µSv (3,8 – 190,3 µSv). Bei den perkutanen transluminalen Angioplastien (PTA) der Beckengefäße und der unteren Extremitäten (n = 20) lag die durchschnittliche Dosis für den EZD-Operateur bei 7 ± 7 µSv (1,2 – 35 µSv) und bei den Angiografien der unteren Extremitäten (n = 12) bei 2 ± 3 µSv (0,2 – 15,9 µSv). Die Echtzeitdosimetrie lieferte Daten, die beim OP-Team mit zu einem veränderten Verhalten im Operationssaal führte.
Schlussfolgerung Da die bei der amtlichen Dosimetrie ermittelten Dosiswerte i. d. R. sehr klein sind, ist eine Optimierung des Verhaltens und damit des Strahlenschutzes mit diesen Dosiswerten nicht möglich. Die mit Strahlenschutzdosimetern ermittelten und in der neuen Strahlenschutzverordnung (StrlSchV) definierten Dosisrichtwerte sind dafür besser geeignet. Ein Vergleich der Messdaten, die mit den EZD ermittelt wurden, ist nur durch eine im Vorfeld vorgenommene Kalibrierung möglich.
Straight line closure of congenital macrostomia
Authors: Schwarz Richard , Sharma Digvijay 
Published: January 2020

ABSTRACTThe results of patients operated on by Nepal Cleft Lip and Palate Association (NECLAPA) surgeons for congenital macrostomia were prospectively studied between January 2000 and December 2002. There were four males and three females with a median age of 10 years. Three had an associated branchial arch syndrome. In all patients an overlapping repair of orbicularis oris was done. Six patients had a straight line closure with excellent cosmetic results and one a Z-plasty with a more obvious scar. All had a normal appearing commissure. Overlapping orbicularis repair with straight line skin closure for this rare congenital anomaly is recommended.
A simple method for immobilising the upper limb following groin or abdominal flaps for soft tissue defects in the hand
Authors: Kamath Jagannath B. , Sahu Chitta Ranjan , Joshua Thangam Verghese 
Published: January 2020

ABSTRACTAbdominal and groin flaps are the main workhorse for soft tissue defects in hand injuries. A simple and easy method is being described for immobilising the upper limb following abdominal and groin flaps for soft tissue defects of the hand using commonly available clavicular braces. This is devoid of all the problems of immobilisation using the common methods such as adhesive plasters and pin fixators and has its own advantages.
Role of free tissue transfer in management of chronic venous ulcer
Authors: Reddy K. Murali Mohan , Reddy D. Mukunda 
Published: January 2020

ABSTRACTMost of the venous ulcers will heal with the treatment of primary venous problem. But a few patients will have refractory, recurrent chronic venous ulcers causing inconvenience to the patients in terms of loss of productive working hours. There is no standard method available for treatment of this chronic problem. Our modality of treatment includes wide excision of ulcer, ligation of incompetent perforators and coverage of defect with well vascularized tissue by free tissue transfer. We have analyzed this form of treatment in five patients with satisfactory result.
Forked fascio-cutaneous supraclavicular artery flap for burned shoulder
Authors: Alfano C , James Kanjoor Roy 
Published: January 2020

ABSTRACTDeep burns of the shoulder region quite often result in the exposure of the joint. Either a partially or completely exposed shoulder joint surrounded by burnt tissue presents difficulty for coverage by local tissues. A case of deep burn with partially exposed joint, where successful coverage was carried out by a local fascio-cutaneous supra clavicular artery forked flap is presented. The flap was based on two perforators from the peripheral distribution area of the supra-clavicular artery and proved to be a good flap in such circumstances
Plastic surgery in rural area: A report
Authors: Alfano C , Pawan Agarwal , Kain R , Raina V K 
Published: January 2020

ABSTRACTMost of our rural population does not seek the expensive specialist service of distant city hospitals due to social or financial reasons. Existing health system in rural area is not efficient enough to meet the health demands of such vast population. There is only one Government Plastic surgery unit covering the population of 40 lacs leading to huge backlog of patients waiting for reconstructive surgery. To evade this situation a team of Plastic surgeons from Government Medical College Jabalpur goes to rural areas twice a year and has operated in on nine occasions since last 4 years.The activities and experiences of the last nine visits are reported here.
Nevus Sebaceous: Response to Erbium YAG laser ablation
Authors: Aithal Aithal 
Published: January 2020

ABSTRACTThe potential of nevus sebaceous to undergo malignant change has prompted many physicians to undertake surgical excision of these lesions. Debulking surgery would leave an ugly scar, cosmetically not acceptable. Our aim was to find the therapeutic outcome and the final cosmetic appearance with Erbium YAG Laser ablation. A 19 year old boy with histologically proven Nevus Sebaceous over the forehead was taken up for ablation using Erbium YAG Laser. We also analyzed the post-operative results in another 6 patients who underwent Laser ablation of Nevus Sebaceous. All 7 patients did well, with no signs of recurrence. Also, all of them had a scar over the ablated area, which was cosmetically acceptable to them. Surgical excision with or without flap rotation, electro fulguration and Cryotherapy are other modalities to treat these lesions. However, they are either too expensive or leave a telltale scar. Erbium YAG Laser ablation is safe, effective and cosmetically acceptable in the treatment of Nevus Sebaceous.
Sweat gland tumor (Eccrine Porocarcinoma) of scalp: A rare tumor
Authors: Roshani R Rana , Sachin S Verma , Vinita A Puri , Amresh S Baliarsing 
Published: January 2020

ABSTRACTEccrine Porocarcinoma is a rare neoplasm arising from sweat glands. It was first described by Pinkus and Mehregan as 'Epidermotropic eccrine carcinoma'. It may occur de novo or as a malignant transformation of an eccrine poroma. It is commonly found in older age group and in the lower extremities. Clinically, it may present as a verrucous plaque, polypoid growth or an ulcerative lesion of long duration. Local recurrence and metastasis to skin, lymphnodes, viscera, and bone may occur. Treatment is wide local excision. Metastatic lesions can be treated with chemotherapy.We report a case of eccrine porocarcinoma of the scalp in a 50 years old female who presented to us with a bosselated, firm, painless, non-tender, freely mobile swelling over left fronto-parietal region of 12 years duration. It was excised and histopathological diagnosis was Eccrine Porocarcinoma. In literature, scalp porocarcinoma is a very rare tumor.
Bi-lamellar lower eyelid reconstruction with superficial temporal artery island flap and hard palate muco-periosteal free graft
Authors: Jacob V , Mokal N J , Deshpande S N 
Published: January 2020

ABSTRACTThree cases of single stage, bi-lamellar reconstruction of full-thickness, horizontal, lateral three-quarter lower eyelid defects using pedicled island flaps of adjacent vascular territories and hard palate muco-periosteal graft are being presented. All cases were done for Basal Cell Carcinoma of the region. While the island flaps allowed for a simple, single stage reconstruction of the external lamella, the hard palate muco-periosteal graft, by virtue of its inherent resilience and a rich glandular component, took well and provided for a good functional and aesthetic result.The follow-up ranged from 6 to 40 months and the final result has been oncologically, functionally and aesthetically satisfactory.
A simple novel technique [PUIT] for closure of urethrocutaneous fistula after hypospadias repair: Preliminary results
Authors: Awad M S 
Published: January 2020

ABSTRACTUrethrocutaneous fistula is a common complication of urethroplasty for severe hypospadias, even when a microsurgical technique is applied, the closure of the fistula is a challenging problem. We present a simple surgical procedure, posterior urethral incision technique [PUIT] to close the fistula in our department.Between February 2001 and December 2004 we prospectively evaluated 32 patients, 26 patients with initial hypospadias fistulas and 6 with recurrent fistulas who underwent closure of urethrocutaneous fistula after hypospadias repair. The mean age of patients was 5 years, the operation consisted of trimming the fistula edge after mobilization of the skin all-around then a midline posterior urethral incision was done 2 mm above and 2 mm below the fistula opening then re-approximation of the urethral edges using 6/0 vicryl sutures with loop magnification.The timing of fistula repair was between 6 and 13 months after it was formed, all of these were effectively closed except three cases with stricture and fistula. Of these, two were completely relieved after repeated urethral dilatation, three times a week for 2 weeks. The third failed case will need another sitting after 6 months.The posterior midline urethral incision gives a good opportunity for repair without tension with a good cosmetic outcome. This may be done under local anesthesia in adults. The procedure is considered simple rapid and easy to be done for variable fistulas types whatever of its site and the age.
Post-traumatic posterior heel soft tissue defect reconstruction
Authors: Suri M P , Patel A G , Vora H J , Raibagkar S C , Mehta D R , Vyas U H 
Published: January 2020

ABSTRACTWe present a simple algorithm for management of post-traumatic posterior heel defect. We covered these with various flaps depending upon the defect size, its exact location, associated injuries, extent of zone of trauma, and complexity of the defect. The aim was to select the most suitable method for soft tissue coverage for posterior heel reconstruction.
Fournier′s gangrene of the penis
Authors: Tauro Francis Leo , Roshan M , Sathish Rao B S , Ravikrishnan J , Menezes Leo T 
Published: January 2020

ABSTRACTFournier′s gangrene is a rare, fulminant, though generally localized disease of the scrotum and penis with occasional extension up the abdominal wall. The usual organism is an anaerobic streptococcus synergistic with some second organism. Our case was unusual in that only the penis was involved without involving the scrotum or abdominal wall. Early therapy is the key, including hospitalization, debridement of entire shaft of the penis distal to the devasted area without excising the normal skin, parenteral broad-spectrum antibiotics & skin grafting. Only few cases of Fournier′s gangrene of the penis have been reported.
Pectus carinatum
Authors: Dogra BB B , Dogra BB B , Manmohan Singh , Vijay Langer 
Published: January 2020

ABSTRACTPectus carinatum is an uncommon congenital anomaly. Surgical correction for the deformity is infrequently sought but is usually very rewarding. There are three types of the deformity, viz. chondro- gladiolar, chondro-manubrial and the lateral variety, of which the latter is the most rare. We present a fifteen year girl who had pectus carinatum of the lateral variety involving the left second to the eighth costo-chondral junctions. The indication for surgical intervention was purely aesthetic. Subperichondrial excision of the lateral halves of the affected costal cartilages and shaving of the adjacent ribs was done. The post-operative recovery was uneventful and the deformity was corrected satisfactorily.
Cornu cutaneum at an unusual site
Authors: Tauro Francis Leo , Martis John Joseph S , John K Sijo , Prem K kumar 
Published: January 2020

AbstractCutaneous horn (cornu cutaneum) is a clinical diagnosis referring to a conical projection above the surface of the skin that resembles a miniature horn. The base of the horn may be flat, nodular or crateriform. The horn is composed of compacted keratin. Various histologic lesions have been documented at the base of the keratin mound and histological confirmation is often necessary to rule out malignant changes. Tenderness at the base of the lesion and lesions of larger size favour malignancy. Malignancy is present in 16-20% of the cases with squamous cell carcinoma being the most common type. We report a young male patient with a keratin horn on the right index finger tip.
Anterolateral thigh flap for phalloplasty - Gandhi Hospital technique: An innovative method
Authors: Mohan Krishna , Ramani Parvati , Krishna Sri , Gnaneswar G 
Published: January 2020

AbstractThe objective of this paper is to report on the innovative technique of using Anterolateral Thigh Fasciocutaneous Thigh Island flap for the reconstruction of penis following Electrical Burns .This is an addition in the armamentariom of reconstructive surgeon doing phalloplasty. The advantages are that this is a single stage procedure, in the same operative field, can be undertaken under Epidural anesthesia and can be undertaken in a place without infrastructure to perform a microvascular surgery. In addition, we presume that the flap will have similar sensation as the penis to an extent.