Infrared physicsPub Date : 2017-02-01Epub Date: 2016-09-12DOI: 10.1111/nmo.12935
J K Zia, C-F Chung, J Schroeder, S A Munson, J A Kientz, J Fogarty, E Bales, J M Schenk, M M Heitkemper
{"title":"The feasibility, usability, and clinical utility of traditional paper food and symptom journals for patients with irritable bowel syndrome.","authors":"J K Zia, C-F Chung, J Schroeder, S A Munson, J A Kientz, J Fogarty, E Bales, J M Schenk, M M Heitkemper","doi":"10.1111/nmo.12935","DOIUrl":"10.1111/nmo.12935","url":null,"abstract":"<p><strong>Background: </strong>Paper food and gastrointestinal (GI) symptom journals are used to help irritable bowel syndrome (IBS) patients determine potential trigger foods. The primary aim of this study was to evaluate the feasibility, usability, and clinical utility of such journals as a data collection tool. A secondary aim was to explore a method for analyzing journal data to describe patterns of diet and symptoms.</p><p><strong>Methods: </strong>Participants (N=17) were asked to log three sets of 3-day food and symptom journals over a 15-day period. Feasibility was evaluated by journal completion rates, symptom logging compliance, and logging fatigability. The feasibility, usability, and clinical utility of journaling were also assessed by a customized evaluation and exit interview. For each journal, regression analyses were conducted to examine relationships between key meal nutrients and subsequent symptoms.</p><p><strong>Key results: </strong>Most participants were young (mean age 35±12) Caucasian (N=13) women (N=14). Journal completion rates were 100% for all participants with no logging fatigability. Over half perceived paper journaling of food and symptoms as feasible, usable, and clinically useful. Thirteen participants demonstrated a strong association with at least one symptom and meal nutrient. Patterns of associations differed among participants.</p><p><strong>Conclusions and inferences: </strong>Paper journaling of food and GI symptoms for 9 days over a 15-day period appeared to be a feasible and usable data collection tool for IBS patients. Over half perceived journaling as at least somewhat clinically useful. Findings from this study support the anecdote that food trigger(s) and associated symptom(s) vary for each individual.</p>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11797272/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74681629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90122-N
András Miklós , Dane Bicanic , Jan de Bont
{"title":"The CO laser photoacoustic absorption spectrum of isoprene—A reactive biogenic forest emittant","authors":"András Miklós , Dane Bicanic , Jan de Bont","doi":"10.1016/0020-0891(93)90122-N","DOIUrl":"10.1016/0020-0891(93)90122-N","url":null,"abstract":"<div><p>The photoacoustic spectrum of isoprene vapor was measured in the 1740–1870 cm<sup>−1</sup> wavenumber range of the CO laser. Two distinct peaks found at 1740 and 1780 cm<sup>−1</sup> appear suitable for monitoring isoprene concentrations of the air.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 635-640"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90122-N","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90127-S
Narender Singh , R.P. Goyal , S.C. Goyal
{"title":"Study of strain optical constants of mixed lithium halides","authors":"Narender Singh , R.P. Goyal , S.C. Goyal","doi":"10.1016/0020-0891(93)90127-S","DOIUrl":"10.1016/0020-0891(93)90127-S","url":null,"abstract":"<div><p>The theory of photo-elasticity of mixed alkali halides has been used to analyse the strain optical constants and volume derivative of the electronic dielectric constant of the mixed crystal, LiF<sub>0.5</sub>Cl<sub>0.5</sub>.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Page 667"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90127-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90113-L
S.C. Goyal , Narender Singh , R.P. Goyal
{"title":"Study of photo-elastic behaviour of mixed alkali halides","authors":"S.C. Goyal , Narender Singh , R.P. Goyal","doi":"10.1016/0020-0891(93)90113-L","DOIUrl":"10.1016/0020-0891(93)90113-L","url":null,"abstract":"<div><p>The present paper deals with the analysis of strain optical constants of the mixed alkali halide crystals.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 573-574"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90113-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90115-N
N. Ivanović , M. Srećković , A. Milosavljević , B. Cekić , M. Manasijević, N. Popović , N. Backović , M. Djurić, A. Kunosić, K. Nemeš , G. C̆ogurić , U. Mioč
{"title":"Nd3+:YAG laser interaction with intermetallic compounds Hf2Rh and Hf2Co","authors":"N. Ivanović , M. Srećković , A. Milosavljević , B. Cekić , M. Manasijević, N. Popović , N. Backović , M. Djurić, A. Kunosić, K. Nemeš , G. C̆ogurić , U. Mioč","doi":"10.1016/0020-0891(93)90115-N","DOIUrl":"10.1016/0020-0891(93)90115-N","url":null,"abstract":"<div><p>The results of an investigation of Nd<sup>3+</sup>:YAG laser interaction with the intermetallic compounds Hf<sub>2</sub>Rh and Hf<sub>2</sub>Co are presented. The analytical expression for the laser pulse power is determined. Reflection spectra over a wide infrared region are measured to obtain the principal mechanism of absorption. The samples and the laser damage are investigated by the Taylor-Hobson Talysurf with a diamond needle for roughness measurements, optical microscope, scanning electron microscope (SEM) and electron microprobe analyses, and the results obtained are presented and discussed. Attention is paid to the validity of some principal relations characterizing the evaluation of the interaction.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 579-588"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90115-N","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90120-V
Sarbajit Ghosal, Jon L. Ebert, Sidney A. Self
{"title":"The infrared refractive indices of CHBr3, CCl4 and CS2","authors":"Sarbajit Ghosal, Jon L. Ebert, Sidney A. Self","doi":"10.1016/0020-0891(93)90120-V","DOIUrl":"10.1016/0020-0891(93)90120-V","url":null,"abstract":"<div><p>Spectrally resolved data for the real part, <em>n</em>(<em>λ</em>) of the complex refractive index, <span><math><mtext>n</mtext><mtext>̂</mtext><mtext> = n +</mtext><mtext>i</mtext><mtext>k</mtext></math></span>, of bromoform (tribromomethane, CHBr<sub>3</sub>) at room temperature (298 K) in the wavelength range 1–13 μm are presented. The measurements were made using the near-normal reflectance technique. The accuracy of the method was confirmed by comparing measured values of <em>n</em>(<em>λ</em>) of water with available data in the literature. For bromoform, <em>n</em>(<em>λ</em>) is found to decrease gradually from 1.58 to 1.51 over this wavelength range, except in the region of anomalous dispersion near absorption bands at 3.3 and 8.7 μm. A complete infrared window for extinction measurements on suspended particulates can be obtained using CCl<sub>4</sub> in the spectral range 1–6 μm, CHBr<sub>3</sub> in the ranges 6.0–7.4 μm and 11–13 μm, and CS<sub>2</sub> in the range 7.4–11.0 μm. The data for <em>n</em>(<em>λ</em>) of CCl<sub>4</sub> in the range 1–9 μm, and those for CS<sub>2</sub> in the range 7.4–11.0 μm, obtained from reflectance measurements, compare favorably with data available in the literature.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 621-628"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90120-V","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90121-M
Gyeong-il Kweon , N.M. Lawandy , A.S.L. Gomes
{"title":"Superradiance effects on the infrared absorption and vibrational temperature of optically pumped molecules","authors":"Gyeong-il Kweon , N.M. Lawandy , A.S.L. Gomes","doi":"10.1016/0020-0891(93)90121-M","DOIUrl":"10.1016/0020-0891(93)90121-M","url":null,"abstract":"<div><p>Using controlled feedback and coincident far infrared absorption, we have shown that the superradiant emission process in NH<sub>3</sub> pumped by the 9R16 line of a CO<sub>2</sub> TEA laser has a marked effect on the absorption of laser energy and vibrational heating of the gas. Since many polyatomic molecules pumped by IR laser are efficient superradiant far infrared sources, the effect is important for laser induced fluorescence studies in these polyatomics.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 629-634"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90121-M","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90116-O
V.V. Tetyorkin, V.B. Alenberg, F.F. Sizov, S.N. Davidenko, V.Yu. Chopik
{"title":"Interface states in PbSnTe/PbTeS heterodiodes","authors":"V.V. Tetyorkin, V.B. Alenberg, F.F. Sizov, S.N. Davidenko, V.Yu. Chopik","doi":"10.1016/0020-0891(93)90116-O","DOIUrl":"10.1016/0020-0891(93)90116-O","url":null,"abstract":"<div><p>Lattice matched heterostructure diodes (HD) <em>p</em>-Pb<sub>0.8</sub>Sn<sub>0.2</sub>Te/<em>n</em>-PbTe<sub>0.97</sub>S<sub>0.03</sub> have been prepared by the vapour phase epitaxy (VPE) method. The diodes have a 50% spectral cutoff at λ ≅11.0 μm when operated at 82 K. Current-voltage (fI-U) and capacitance-voltage (<em>C</em>-<em>U</em>) characteristics were measured as a function of temperature. The <em>C</em>-<em>U</em> curves display peculiarities at forward bias which were explained by the existence of deep defect states localized at the interface. The best HD have <em>R</em><sub>0</sub><em>A</em> product values as high as 20 Ω cm<sup>2</sup> at 77 K.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages 589-593"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90116-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53082134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared physicsPub Date : 1993-12-01DOI: 10.1016/0020-0891(93)90129-U
{"title":"List of contents and author index","authors":"","doi":"10.1016/0020-0891(93)90129-U","DOIUrl":"https://doi.org/10.1016/0020-0891(93)90129-U","url":null,"abstract":"","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 6","pages":"Pages i-x"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90129-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136553726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}