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  1. Article: Femoral neck bone mineral density in ambulatory men with poliomyelitis

    Chang, K.-H / Lai, C.-H / Chen, S.-C / Tang, I.-N / Hsiao, W.-T / Liou, T.-H / Lee, C.-M

    Osteoporosis international. 2011 Jan., v. 22, no. 1

    2011  

    Abstract: Summary We evaluated bilateral femoral neck bone mineral densities (FNBMDs) in 32 men with poliomyelitis and their matched controls. Men with poliomyelitis had significantly lower FNBMD in both legs, and FNBMD was lowest in their shorter legs. Knee ... ...

    Abstract Summary We evaluated bilateral femoral neck bone mineral densities (FNBMDs) in 32 men with poliomyelitis and their matched controls. Men with poliomyelitis had significantly lower FNBMD in both legs, and FNBMD was lowest in their shorter legs. Knee extensor strength and regular exercise were important predictive factors associated with decreased FNBMD. Introduction People with poliomyelitis (polio) are prone to leg fractures after mild trauma. The flaccid paralysis, asymmetric involvement, and underdeveloped growth of afflicted legs may lead to osteoporosis of either leg, characterized by different patterns. This study aimed to measure their femoral FNBMD and to explore the factors associated with changes in FNBMD in either leg. Methods We did a prospective study to evaluate bilateral FNBMD with dual-energy X-ray absorptiometry in 32 men with polio (age range, 41-57 years; mean, 47 years) and 32 age- and body mass index-matched controls. Measuring the difference in leg length, we classified the legs of each polio subject as “longer” or “shorter.” In addition, we chose the right leg of each control as a reference leg. We then used the Mann-Whitney U test to compare FNBMD of these three groups of legs and searched for the factors associated with FNBMD using stepwise multiple regression analyses. Results Compared to the reference leg, men with polio had significantly lower FNBMD in both their longer and shorter legs, by 13% and 23%, respectively. The difference in FNBMD between the two legs of polio subjects was significant. Knee extensor strength and regular exercise were two important factors associated with bilateral FNBMD in men with polio. Conclusions Men with polio had lower bilateral FNBMD. FNBMD of the shorter leg should be the choice for predicting the risk of hip fracture in men with polio because on average, the shorter leg has lower BMD.
    Keywords bone density ; dual-energy X-ray absorptiometry ; osteoporosis
    Language English
    Dates of publication 2011-01
    Size p. 195-200.
    Publisher Springer-Verlag
    Publishing place London
    Document type Article
    ZDB-ID 1064892-6
    ISSN 1433-2965 ; 0937-941X
    ISSN (online) 1433-2965
    ISSN 0937-941X
    DOI 10.1007/s00198-010-1198-1
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Femoral neck bone mineral density in ambulatory men with poliomyelitis.

    Chang, K-H / Lai, C-H / Chen, S-C / Tang, I-N / Hsiao, W-T / Liou, T-H / Lee, C-M

    Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA

    2010  Volume 22, Issue 1, Page(s) 195–200

    Abstract: Unlabelled: We evaluated bilateral femoral neck bone mineral densities (FNBMDs) in 32 men with poliomyelitis and their matched controls. Men with poliomyelitis had significantly lower FNBMD in both legs, and FNBMD was lowest in their shorter legs. Knee ... ...

    Abstract Unlabelled: We evaluated bilateral femoral neck bone mineral densities (FNBMDs) in 32 men with poliomyelitis and their matched controls. Men with poliomyelitis had significantly lower FNBMD in both legs, and FNBMD was lowest in their shorter legs. Knee extensor strength and regular exercise were important predictive factors associated with decreased FNBMD.
    Introduction: People with poliomyelitis (polio) are prone to leg fractures after mild trauma. The flaccid paralysis, asymmetric involvement, and underdeveloped growth of afflicted legs may lead to osteoporosis of either leg, characterized by different patterns. This study aimed to measure their femoral FNBMD and to explore the factors associated with changes in FNBMD in either leg.
    Methods: We did a prospective study to evaluate bilateral FNBMD with dual-energy X-ray absorptiometry in 32 men with polio (age range, 41-57 years; mean, 47 years) and 32 age- and body mass index-matched controls. Measuring the difference in leg length, we classified the legs of each polio subject as "longer" or "shorter." In addition, we chose the right leg of each control as a reference leg. We then used the Mann-Whitney U test to compare FNBMD of these three groups of legs and searched for the factors associated with FNBMD using stepwise multiple regression analyses.
    Results: Compared to the reference leg, men with polio had significantly lower FNBMD in both their longer and shorter legs, by 13% and 23%, respectively. The difference in FNBMD between the two legs of polio subjects was significant. Knee extensor strength and regular exercise were two important factors associated with bilateral FNBMD in men with polio.
    Conclusions: Men with polio had lower bilateral FNBMD. FNBMD of the shorter leg should be the choice for predicting the risk of hip fracture in men with polio because on average, the shorter leg has lower BMD.
    MeSH term(s) Absorptiometry, Photon/methods ; Adult ; Anthropometry/methods ; Bone Density/physiology ; Case-Control Studies ; Exercise/physiology ; Femur Neck/physiopathology ; Humans ; Leg/growth & development ; Leg Length Inequality/complications ; Leg Length Inequality/physiopathology ; Life Style ; Male ; Middle Aged ; Muscle Strength/physiology ; Muscle, Skeletal/physiopathology ; Osteoporosis/etiology ; Osteoporosis/physiopathology ; Poliomyelitis/complications ; Poliomyelitis/physiopathology ; Prospective Studies ; Walking/physiology
    Language English
    Publishing date 2010-03-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 1064892-6
    ISSN 1433-2965 ; 0937-941X
    ISSN (online) 1433-2965
    ISSN 0937-941X
    DOI 10.1007/s00198-010-1198-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Raman scattering from single solution droplets.

    Fung, K H / Tang, I N

    Applied optics

    1988  Volume 27, Issue 2, Page(s) 206–208

    Language English
    Publishing date 1988-01-15
    Publishing country United States
    Document type Journal Article
    ISSN 1559-128X
    ISSN 1559-128X
    DOI 10.1364/AO.27.000206
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Journal: Phase transformation and growth of aerosol particles composed of mixed salts

    Tang, I.N.

    Journal of Aerosol Science

    1976  Volume 7, Page(s) 361–371

    Abstract: Thermodynamische Ueberlegungen zu Phasenumwandlung und Wachstum von Salzgemisch-Aerosolen in Luft. Ein mathematischer Ausdruck wird hergeleitet, der die Troepfchengroesse im Gleichgewichtszustand mit den Eigenschaften der Salzloesung in einem ... ...

    Abstract Thermodynamische Ueberlegungen zu Phasenumwandlung und Wachstum von Salzgemisch-Aerosolen in Luft. Ein mathematischer Ausdruck wird hergeleitet, der die Troepfchengroesse im Gleichgewichtszustand mit den Eigenschaften der Salzloesung in einem Mehrkomponenten-System verknuepft. Bei gegebener relativer Feuchte lassen sich die Anteile der fluessigen und festen Phase, die chemische Zusammensetzung der festen Phase und der waessrigen Loesung direkt aus dem Loeslichkeitsdiagramm entnehmen, sofern nur die chemische Aktivitaet des Wassers ueber den ganzen Konzentrationsbereich bekannt ist. Eine graphische Methode wird angegegeben, die eine Extrapolation von Daten der Wasseraktivitaet in verduennten Loesungen bis in den Zweiphasenbereich erlaubt. Die Wachstumskurven der Systeme H2O-NaCl-MgCl2 und H2O-H2SO4-(NH4)2SO4 wurden als Funktionen der relativen Feuchte und der chemischen Zusammensetzung berechnet. Je nach Feuchte und Zusammensetzung koennen atmosphaerische Sulfataerosole (NH4)2SO4, 3(NH4)2SO4,H2SO4 oder NH4HSO4 als feste Phase enthalten.
    Keywords Feuchtigkeit ; Ammoniumverbindung ; Sulfat ; Magnesiumchlorid ; Schwefelsaeure ; Schwefelverbindung ; Stickstoffverbindung ; Aerosol
    Language English
    Document type Journal
    Database OPAC and Environmental database (ULIDAT) of The Federal Environment Agency (UBA)

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  5. Article: Study of condensational growth of water droplets by Mie resonance spectroscopy.

    Fung, K H / Tang, I N / Munkelwitz, H R

    Applied optics

    1987  Volume 26, Issue 7, Page(s) 1282–1287

    Abstract: An optical technique using MIE resonance scattering spectroscopy to monitor the growth of a saline solution droplet is presented. This technique utilizes a quadrupole particle trap to suspend a charged NaCl solution droplet in a water vapor environment ... ...

    Abstract An optical technique using MIE resonance scattering spectroscopy to monitor the growth of a saline solution droplet is presented. This technique utilizes a quadrupole particle trap to suspend a charged NaCl solution droplet in a water vapor environment and a CO(2) laser to momentarily perturb the droplet-vapor equilibrium. The condensational growth of this droplet is monitored by means of multiple Mie resonances observed at right angle scattering. A least-squares fit, used to evaluate the condensation coefficient of water, shows that the value tends to approach unity. In addition, this new approach reduces the error in dry salt size measurement to <1%.
    Language English
    Publishing date 1987-04-01
    Publishing country United States
    Document type Journal Article
    ISSN 1559-128X
    ISSN 1559-128X
    DOI 10.1364/AO.26.001282
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Journal: Detection Limits for Sulfates and Nitrates in Aerosol Particles by Raman Spectroscopy

    Fung, K. H. / Imre, D. G. / Tang, I. N.

    Journal of Aerosol Science

    1994  Volume 25, Page(s) 479–485

    Abstract: Es wurde die untere Nachweisgrenze fuer an Aerosolpartikeln anhaftende Sulfate und Nitrate durch Ramanspektroskopie ermittelt. Die experimentelle Anordnung bestand aus einem Aerosolgenerator, der Troepfchen mit 45 Mikrometer Durchmesser erzeugte, oder ... ...

    Abstract Es wurde die untere Nachweisgrenze fuer an Aerosolpartikeln anhaftende Sulfate und Nitrate durch Ramanspektroskopie ermittelt. Die experimentelle Anordnung bestand aus einem Aerosolgenerator, der Troepfchen mit 45 Mikrometer Durchmesser erzeugte, oder einer elektrostatischen Haltevorrichtung fuer einzelne feste Teilchen von 15 um Durchmesser. Die Ramanspektren wurden mit einem Argonlaser im sichtbaren Wellenlaengenbereich bei 488 nm angeregt und mit einem Monochromator mit anschliessendem hochempfindlichen Detektor (charge coupled device) analysiert. Zwischen der Staerke der spontanen Ramanlinien und den Ionenkonzentrationen von Sulfat und Nitrat wurde ein linearer Zusammenhang gefunden. Die Nachweisgrenzen fuer beide Stoffe waren einige Picogramm bei festen Teilchen und 2,5 mmol bei Troepfchen. Die stimulierten Ramanspektren ergaben gute Signale nur bei hohen Konzentrationen, die Nachweisgrenze fuer Nitrat war 0,1 mol und fuer Sulfat 0,2 mol. Um Fluktuationen im Aerosolstrom auszugleichen, wurde ihm eine Verbindung als innerer Standard zugefuegt, auf den alle Messgroessen bezogen wurden.
    Keywords Nachweisbarkeit ; Partikel ; Messverfahren ; Spektralanalyse ; Sulfat ; Nitrat ; Spektrum ; Detektor ; Aerosol ; Analysenverfahren ; Quantitative Analyse
    Language English
    Document type Journal
    Database OPAC and Environmental database (ULIDAT) of The Federal Environment Agency (UBA)

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  7. Article: An Improved Nonenzymic Method for the Determination of Gas-phase Peroxides.

    Lee, J H / Tang, I N / Weinstein-Lloyd, J B / Halper, E B

    Environmental science & technology

    1994  Volume 28, Issue 6, Page(s) 1180–1185

    Language English
    Publishing date 1994-06-01
    Publishing country United States
    Document type Journal Article
    ISSN 0013-936X
    ISSN 0013-936X
    DOI 10.1021/es00055a032
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Journal: Ammonium bisulfate aerosols in a moist atmosphere. Aerosol growth studies-III

    Munkelwitz, H.R. / Tang, I.N.

    Journal of Aerosol Science

    1977  Volume 8, Page(s) 321–330

    Abstract: Experimentelle Untersuchung der Phasenumwandlung und des anschliessenden Wachstums von monodispersen NH4HSO4-Aerosolen durch Kondensation von H2O-Dampf als Funktion der relativen Feuchte bei 25 Grad C. Weiterhin wurde der Wasserdampfdruck ueber ... ...

    Abstract Experimentelle Untersuchung der Phasenumwandlung und des anschliessenden Wachstums von monodispersen NH4HSO4-Aerosolen durch Kondensation von H2O-Dampf als Funktion der relativen Feuchte bei 25 Grad C. Weiterhin wurde der Wasserdampfdruck ueber waessrigen NH4HSO4-Loesungen bei 5-25 Grad C und Konzentrationen von 11,53 Gew.-% bis zur Saettigung gemessen. Experimentelle und theoretische Werte der Volumenzunahme stimmen gut ueberein;die Breite der Kornverteilung wird durch die Kondensation nicht veraendert. Aus den Wachstums- und Dampfdruckdaten ergibt sich fuer die Phasenumwandlung im sichtbaren Korngroessenbereich eine relative Feuchte von 39,0 plus minus 0,5%.
    Keywords Kondensation ; Feuchtigkeit ; Aerosol ; Wasserdampf ; Stickstoffverbindung ; Schwefelverbindung
    Language English
    Document type Journal
    Database OPAC and Environmental database (ULIDAT) of The Federal Environment Agency (UBA)

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  9. Article: Laboratory study of sulfuric acid spill characteristics pertaining to maritime accidents.

    Tang, I N / Wong, W T / Munkelwitz, H R / Flessner, M F

    Environmental science & technology

    1982  Volume 16, Issue 9, Page(s) 587–593

    Language English
    Publishing date 1982-09-01
    Publishing country United States
    Document type Journal Article
    ISSN 0013-936X
    ISSN 0013-936X
    DOI 10.1021/es00103a010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Clustering of Sulfur Dioxide and Water Vapor about Oxonium and Nitric Oxide Ions.

    Castleman, A W / Tang, I N / Munkelwitz, H R

    Science (New York, N.Y.)

    1971  Volume 173, Issue 4001, Page(s) 1025–1026

    Abstract: The mobilities of ions produced in electrical discharges in the presence of trace quantities of water vapor and sulfur dioxide are generally lower than those expected for simple ions. Mass spectrometric identification reveals that species composed of ... ...

    Abstract The mobilities of ions produced in electrical discharges in the presence of trace quantities of water vapor and sulfur dioxide are generally lower than those expected for simple ions. Mass spectrometric identification reveals that species composed of water vapor and sulfur dioxide molecules clustering about common atmospheric ions are formed under these conditions. The identification of these clusters provides an explanation for the effect of trace gases on the mobilities of ions.
    Language English
    Publishing date 1971-09-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.173.4001.1025
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    Zs.MG 77: Show issues

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