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  1. Article ; Online: House call.

    Demos, Nicholas

    Texas Heart Institute journal

    2013  Volume 40, Issue 5, Page(s) 510

    MeSH term(s) Delivery of Health Care/history ; Greece ; History, 20th Century ; House Calls ; Humans ; Physicians/history ; World War II
    Language English
    Publishing date 2013-10-25
    Publishing country United States
    Document type Historical Article ; Personal Narrative ; Portrait
    ZDB-ID 604761-0
    ISSN 1526-6702 ; 0730-2347
    ISSN (online) 1526-6702
    ISSN 0730-2347
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    Zs.A 1452: Show issues Location:
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    Zs.MO 484: Show issues

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  2. Book ; Online: Optical and mechanical properties of ion-beam-sputtered Nb$_2$O$_5$ and TiO$_2$-Nb$_2$O$_5$ thin films for gravitational-wave interferometers

    Demos, N. / Granata, M. / Gras, S. / Amato, A. / Cagnoli, G. / Sassolas, B. / Degallaix, J. / Forest, D. / Michel, C. / Pinard, L. / Evans, M. / Di Michele, A. / Canepa, M.

    2021  

    Abstract: Brownian thermal noise associated with highly-reflective mirror coatings is a fundamental limit for several precision experiments, including gravitational-wave detectors. Recently, there has been a worldwide effort to find mirror coatings with improved ... ...

    Abstract Brownian thermal noise associated with highly-reflective mirror coatings is a fundamental limit for several precision experiments, including gravitational-wave detectors. Recently, there has been a worldwide effort to find mirror coatings with improved thermal noise properties that also fulfill strict optical requirements such as low absorption and scatter. We report on the optical and mechanical properties of ion-beam-sputtered niobia and titania-niobia thin films, and we discuss application of such coatings in current and future gravitational-wave detectors. We also report an updated direct coating thermal noise measurement of the HR coatings used in Advanced LIGO and Advanced Virgo.
    Keywords Physics - Instrumentation and Detectors ; Condensed Matter - Materials Science ; Physics - Applied Physics ; Physics - Optics
    Publishing date 2021-01-06
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Titania Mixed with Silica: A Low Thermal-Noise Coating Material for Gravitational-Wave Detectors.

    McGhee, Graeme I / Spagnuolo, Viola / Demos, Nicholas / Tait, Simon C / Murray, Peter G / Chicoine, Martin / Dabadie, Paul / Gras, Slawek / Hough, Jim / Iandolo, Guido Alex / Johnston, Ross / Martinez, Valérie / Patane, Oli / Rowan, Sheila / Schiettekatte, François / Smith, Joshua R / Terkowski, Lukas / Zhang, Liyuan / Evans, Matthew /
    Martin, Iain W / Steinlechner, Jessica

    Physical review letters

    2023  Volume 131, Issue 17, Page(s) 171401

    Abstract: Coating thermal noise is one of the dominant noise sources in current gravitational wave detectors and ultimately limits their ability to observe weaker or more distant astronomical sources. This Letter presents investigations of TiO_{2} mixed with SiO_{ ... ...

    Abstract Coating thermal noise is one of the dominant noise sources in current gravitational wave detectors and ultimately limits their ability to observe weaker or more distant astronomical sources. This Letter presents investigations of TiO_{2} mixed with SiO_{2} (TiO_{2}:SiO_{2}) as a coating material. We find that, after heat treatment for 100 h at 850 °C, thermal noise of a highly reflective coating comprising of TiO_{2}:SiO_{2} and SiO_{2} reduces to 76% of the current levels in the Advanced LIGO and Advanced Virgo detectors-with potential for reaching 45%, if we assume the mechanical loss of state-of-the-art SiO_{2} layers. Furthermore, those coatings show low optical absorption of <1  ppm and optical scattering of ≲5  ppm. Notably, we still observe excellent optical and thermal noise performance following crystallization in the coatings. These results show the potential to meet the parameters required for the next upgrades of the Advanced LIGO and Advanced Virgo detectors.
    Language English
    Publishing date 2023-11-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.131.171401
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  4. Article: The stapled, uncut gastroplasty for hiatal hernia: 24 years' follow-up.

    Demos, N J

    Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus

    1999  Volume 12, Issue 1, Page(s) 14–21

    Abstract: A simple, tension-free, in situ gastroplasty was devised in the late 1960s and early 1970s to avoid the recurrences and complications of the Collis and Nissen hiatal hernioplasties. Long-term follow-up has now been completed on 153 patients. For this ... ...

    Abstract A simple, tension-free, in situ gastroplasty was devised in the late 1960s and early 1970s to avoid the recurrences and complications of the Collis and Nissen hiatal hernioplasties. Long-term follow-up has now been completed on 153 patients. For this procedure, the anterior gastric wall is stapled, not cut, and the fundoplication is performed on the cardia and the neoesophagus created by the stapling and is sutured under the diaphragm. A total of 161 patients underwent the stapled, uncut gastroplasty and were followed for up to 24 years. Conditions included reflux in 145, organic stricture in 23, giant hiatal hernia in 14 (with or without obstruction) and collagen esophagus in six. Post-operative tests included subjective symptom evaluation by questionnaire, esophageal manometry and 24-h pH monitoring. Of the total 161 patients, 89 were followed up for 2-10 years and 64 for 1-24 years; seven were lost to follow-up and one died soon after the operation. The stapled, uncut gastroplasty and fundoplication produced 95% excellent and good results (Matthews classification grade I and II). After the procedure, the esophagus was significantly lengthened (from 2.55 +/- 0.96 to 3.2 +/- 0.32 cm; p < 0.001) and sphincter pressure was significantly increased (from 6.35 +/- 3.5 to 27.3 +/- 6.82 mmHg; p < 0.0001). No leakage, bleeding, or 'slipped' recurrence was observed. Only one patient experienced dissolution of the wrap and recurrent symptoms. Aspiration, scleroderma, stricture and short esophagi, post-gastrectomy gastric remnants and hiccups were treated with excellent and good long-term results. The stapled, uncut gastroplasty has universal application with excellent results, not only in typical cases of gastroesophageal reflux, but also in complicated situations such as short esophagus, strictures, or dysperistaltic and aperistaltic esophagus.
    MeSH term(s) Follow-Up Studies ; Fundoplication/methods ; Gastroplasty/methods ; Hernia, Hiatal/surgery ; Humans ; Postoperative Complications ; Surgical Stapling
    Language English
    Publishing date 1999
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 639470-x
    ISSN 1442-2050 ; 1120-8694
    ISSN (online) 1442-2050
    ISSN 1120-8694
    DOI 10.1046/j.1442-2050.1999.00001.x
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    Zs.A 2378: Show issues Location:
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  5. Book: Triptycho

    Dēmos, Nikos

    epikoinōnia, Agapē, Eleutheria

    2002  

    Author's details Nikos Dēmos
    Language Greek
    Size 308 S
    Edition 2. ekd
    Publisher Patakēs
    Publishing place Athēna
    Document type Book
    Note In griech. Schr.
    ISBN 9601603816 ; 9789601603810
    Database Former special subject collection: coastal and deep sea fishing

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  6. Article: OPERATIVE CONTRAST VISUALIZATION.

    PRESTON, F W / DEMOS, N J

    The Surgical clinics of North America

    2003  Volume 44, Page(s) 35–43

    MeSH term(s) Cholangiography ; Coloring Agents ; Contrast Media ; Foreign Bodies ; Pancreas ; Radiography ; Surgical Procedures, Operative
    Chemical Substances Coloring Agents ; Contrast Media
    Language English
    Publishing date 2003-05-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 215713-5
    ISSN 1558-3171 ; 0039-6109
    ISSN (online) 1558-3171
    ISSN 0039-6109
    DOI 10.1016/s0039-6109(16)37184-5
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    Uk I Zs.75: Show issues Location:
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  7. Article: Stapled, uncut gastroplasty for hiatal hernia: 12-year follow-up.

    Demos, N J

    The Annals of thoracic surgery

    1984  Volume 38, Issue 4, Page(s) 393–399

    Abstract: A total of 82 patients with gastroesophageal reflux were consecutively treated with stapled, uncut gastroplasty and complete fundoplication over a 12-year period. The conditions treated included symptomatic reflux; esophageal stricture; massive hernia; ... ...

    Abstract A total of 82 patients with gastroesophageal reflux were consecutively treated with stapled, uncut gastroplasty and complete fundoplication over a 12-year period. The conditions treated included symptomatic reflux; esophageal stricture; massive hernia; collagen esophagus; short esophagus; Barrett's esophagus; recurrent, massive bleeding or anemia; small gastric remnant after gastrectomy; and acute volvulus. The transthoracic approach of stapled, uncut gastroplasty gives superb exposure. Outstanding features of the procedure are the safety and versatility resulting from the small amount of fundus required, no need either to ligate short gastric vessels or to suture the esophagus itself, and preservation of anatomical continuity between the wrapping fundus and the wrapped gastric tubular segment. There have been no deaths and no cases of anatomical or symptomatic recurrence in the series. Complications included some nondebilitating and mainly self-limiting symptoms.
    MeSH term(s) Esophagus/physiopathology ; Esophagus/surgery ; Female ; Gastric Fundus/surgery ; Gastroesophageal Reflux/complications ; Gastroesophageal Reflux/physiopathology ; Gastroesophageal Reflux/surgery ; Hernia, Diaphragmatic/surgery ; Hernia, Hiatal/complications ; Hernia, Hiatal/physiopathology ; Hernia, Hiatal/surgery ; Humans ; Male ; Pressure ; Stomach/surgery ; Surgical Staplers ; Suture Techniques
    Language English
    Publishing date 1984-10
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 211007-6
    ISSN 1552-6259 ; 0003-4975
    ISSN (online) 1552-6259
    ISSN 0003-4975
    DOI 10.1016/s0003-4975(10)62293-x
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    Zs.A 252: Show issues Location:
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  8. Book: Ē Kutsokōstaina

    Dēmos, Nikos

    1988  

    Author's details Nikos Dēmos
    Language Greek
    Size 317 S
    Publisher Ekdoseis Nephelē
    Publishing place Athēna
    Document type Book
    Note In griech. Schr.
    Database Former special subject collection: coastal and deep sea fishing

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  9. Article: Y-V cardioplasty for recurrent achalasia.

    Demos, N J

    The American surgeon

    1983  Volume 49, Issue 5, Page(s) 282–284

    Abstract: Long-term follow-up of patients with achalasia has revealed recurrences many years following an initially successful cardiomyotomy. In three patients with recurrent achalasia, one previously operated on by us and another twice recurrent, we were ... ...

    Abstract Long-term follow-up of patients with achalasia has revealed recurrences many years following an initially successful cardiomyotomy. In three patients with recurrent achalasia, one previously operated on by us and another twice recurrent, we were confronted with an apparently previously complete myotomy at reoperation. We elected to perform a cardioplasty using the Y-V principle employed previously in duodenal stenosis. We added a Belsey type of partial plication. Five-year follow-up with history, esophagram, esophageal function studies, and endoscopy has revealed no recurrence of dysphagia and no symptoms of reflux or esophagitis.
    MeSH term(s) Cardia/surgery ; Esophageal Achalasia/surgery ; Female ; Humans ; Male ; Methods ; Recurrence ; Reoperation ; Stomach Diseases/surgery
    Language English
    Publishing date 1983-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 202465-2
    ISSN 1555-9823 ; 0003-1348
    ISSN (online) 1555-9823
    ISSN 0003-1348
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  10. Article: A new gastroplasty for reflux esophagitis.

    Demos, N J

    The Journal of the Medical Society of New Jersey

    1981  Volume 78, Issue 2, Page(s) 105–110

    MeSH term(s) Adult ; Aged ; Esophagitis, Peptic/surgery ; Female ; Humans ; Male ; Methods ; Middle Aged ; Stomach/surgery
    Language English
    Publishing date 1981-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604290-9
    ISSN 0025-7524
    ISSN 0025-7524
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    Zs.B 152: Show issues Location:
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