scholarly journals Saber sheath trachea: A radiological sign of severe airway obstruction

Author(s):  
Ram Babu Sah ◽  
◽  
Ramesh Singh Pal ◽  

A middle-aged man, chronic smoker, presented with complaints of productive cough & exertional breathlessness (mMRC grade III) for 3 years with frequent episodes of exacerbation in the past. There was no other comorbidity or significant past history. His chest radiograph showed narrowing of trachea. Evaluation with computerized tomography of thorax showed normal extra-thoracic trachea with narrowing of the coronal diameter with increase in the sagittal diameter of the trachea along with thickening and calcification of the tracheal wall seen in saber sheath trachea. Keywords: forced expiratory volume; tracheal narrowing; saber sheath trachea.

1877 ◽  
Vol 25 (171-178) ◽  

George Poulett Scrope. It is scarcely possible at the present day to realize the conditions of that intellectual “reign of terror” which prevailed at the commencement of the present century, as the consequence of the unreasoning prejudice and wild alarm excited by the early progress of geological inquiry. At that period, every attempt to explain the past history of the earth by a reference to the causes still in operation upon it was met, not by argument, but by charges of atheism against its propounder; and thus Hutton’s masterly fragment of a ‘Theory of the Earth,’ Playfair’s persuasive‘ Illustrations,’ and Hall’s records of accurate observation and ingenious experiment had come to be inscribed m a social Index Expurgatorius ,and for a while, indeed, might have seemed to be consigned to total oblivion. Equally injurious suspicions were aroused against the geologist who dared to make allusion to the important part which igneous forces have undoubtedly played in the formation of certain rocks; for the authority of Werner had acquired an almost sacred cha­racter; and “ Vulcanists ” and “ Huttonians ” were equally objects of aversion and contempt. To two men who have very recently—and within a few months of one another—passed away from our midst, science is indebted for boldly en­countering and successfully overcoming this storm of prejudice. Hutton and his friends lived a generation too soon ; and thus it was reserved tor Lyell and Scrope to carry out the task which the great Scotch philosopher had failed to accomplish, namely, the removal of geology from the domain of speculation to that of inductive science.


2006 ◽  
Vol 8 (2) ◽  
pp. 124-146
Author(s):  
Susan Hardy ◽  
Anthony Corones

2021 ◽  
Vol 16 (11) ◽  
pp. 46-49
Author(s):  
H. Pozniak
Keyword(s):  

2016 ◽  
Vol 22 (2) ◽  
Author(s):  
George Kouvaros

In his final unfinished book on the writing of history, Siegfried Kracauer wonders about his increasing susceptibility to ‘the speechless plea of the dead’. ‘[T]he older one grows, the more he is bound to realize that his future is the future of the past—history.’ For the children of migrants, the question of how to speak well of the dead is distinguished by complex feelings of attachment and rejection, identification and denial that are expressed in a range of everyday interactions. ‘The Old Greeks’ examines the part played by photographic media in this process of memorialisation. It elaborates a series of propositions about the value of photographic media that are tested through a consideration of the events that surrounded the author’s first years in Australia.


2011 ◽  
Vol 38 (2) ◽  
pp. 105-129
Author(s):  
Alexis Peri

AbstractThis article examines the everyday practices of historical reflection, recollection, and reconstruction as revealed in diaries of the Leningrad Blockade. In particular, it focuses on how Leningraders who chose to keep diaries of their experiences worked to make sense of the siege by situating it historically and comparing it to two other historical moments, the blockade of Petrograd during the Civil War and the siege of Sevastopol' during the Crimean War. Their evaluations of these historical analogies were based on a combination of personal and collective memories as well as on their understandings of state-sanctioned accounts of these events. Ultimately, these historical refl ections alerted the diarists to what they came to see as the unique and incomparable aspects of Blockade.


2017 ◽  
Vol 284 (1861) ◽  
pp. 20170706 ◽  
Author(s):  
Valentin Thouzeau ◽  
Philippe Mennecier ◽  
Paul Verdu ◽  
Frédéric Austerlitz

Linguistic and genetic data have been widely compared, but the histories underlying these descriptions are rarely jointly inferred. We developed a unique methodological framework for analysing jointly language diversity and genetic polymorphism data, to infer the past history of separation, exchange and admixture events among human populations. This method relies on approximate Bayesian computations that enable the identification of the most probable historical scenario underlying each type of data, and to infer the parameters of these scenarios. For this purpose, we developed a new computer program PopLingSim that simulates the evolution of linguistic diversity, which we coupled with an existing coalescent-based genetic simulation program, to simulate both linguistic and genetic data within a set of populations. Applying this new program to a wide linguistic and genetic dataset of Central Asia, we found several differences between linguistic and genetic histories. In particular, we showed how genetic and linguistic exchanges differed in the past in this area: some cultural exchanges were maintained without genetic exchanges. The methodological framework and the linguistic simulation tool developed here can be used in future work for disentangling complex linguistic and genetic evolutions underlying human biological and cultural histories.


2019 ◽  
Vol 2 (02) ◽  
pp. 100-111
Author(s):  
Ricki Natali Jaya ◽  
Citra Kemala Putri ◽  
Sophia Purbasari

The knowledge of history is the study of incidents in the past. Therefore, the knowledge of history has many benefits, including: history can create a better future by taking lessons and experiences from the past. History can be studied if there are forms of heritage, such as a temples. The center of the temple in Indonesia is located in Central Java, the center of the Hindu-Buddhist temple. This region has the Borobudur Temple, which is best known by the people of Indonesia and foreign tourists, because Borobudur Temple is the largest Buddhist temple in the world. But many other temples are interesting to be known by the community, especially by elementary school children who start studying history in fifth grade elementary school. Learning history in schools requires a variety of learning methods, so that students are enthusiastic and do not get bored while learning in class. In overcoming the history of learning methods that are less diverse in fifth grade elementary school children in Bandung, pop-up books were chosen as a solution to this problem because, the use of pop-up book media is a new experience for many students at school. Data collection techniques carried out by interview and observation using mixed methods. The main media is a pop up book entitled "Myths and Legends of Temples in Indonesia - Hindu-Buddhist Temple Edition in Central Java". Accompanied by supporting media, namely: stickers, carrying bags, tumblers, fans, and clothes. The design was made to increase insight and introduction of Hindu-Buddhist temples in Central Java to fifth grade students in Bandung.


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