Measurement of gastric acid secretion by conductivity

Lawrence, A. J.; Smith, Gordon

doi:10.1016/0014-2999(74)90268-4

Cited by 15 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, we focused on the behavior of the antenna when it was placed within an acid liquid environment resembling the stomach. As show in Figure 13, the acid was modeled as a cylinder measuring 5 × 10 cm 2 with gastric acid dielectric properties [21], and the antenna, along with the capsule, was positioned inside this simulated acid environment. The results presented in Figure 14 show that the presence of the acid liquid caused a minor shift in the S 11 response towards lower frequencies, accompanied by a 2 dBi increase in antenna S 11 .…”

Section: Influence Of the Hugo Model On The Antennamentioning

confidence: 99%

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

Mimouni,

Fady,

Terhzaz

et al. 2023

PIER C

View full text Add to dashboard Cite

This study presents a pioneering curved antenna design that is seamlessly integrated into Wireless Capsule Endoscopy (WCE) devices. The proposed antenna features a miniature height of 25 mm, a radius of curvature of only 5.5 mm, and a conductive line width of up to 2 mm, making it an ideal fit for the use in compact WCE applications. The antenna is specifically designed to operate in the ISM5800 band and achieves outstanding performance metrics, such as an S 11 of −10 dB and a gain of 5.8 dBi. To evaluate the safety of our design for human usage, we conducted an investigation of the specific absorption rate (SAR) of the Hugo Model antenna in various positions for ISM5800 and compared our findings to the safety limits specified by the Federal Communications Commission (FCC) standards. Our results confirm that the proposed antenna design meets the safety requirements for wireless communication systems in biomedical applications, thereby demonstrating its potential for clinical use.

show abstract

Section: Influence Of the Hugo Model On The Antennamentioning

confidence: 99%

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

Mimouni,

Fady,

Terhzaz

et al. 2023

PIER C

View full text Add to dashboard Cite

show abstract

H₂‐Antihistaminika, 2. Mitt. Synthese und Pharmakologie α‐substituierter Metiamid‐Analoga

Wegner

Fritschi

Schunack

1978

Archiv der Pharmazie

View full text Add to dashboard Cite

Synthese und Pharmakologie a mbstituierter Metiamid-AnalogaAus dem Fachbereich Pharmazie der Johannes Gutenberg-Universitat, M a i m und der Pharmakologisch-Toxikologischen Forschung der Fa. Ludwig Heumann u. Co., Numberg". (Eingegangen am 25. Februar 1977) Es wird die Synthese a-substituierter 5(4)-Methyl4 (5)-[ [ 2-(N'-methyl-thioureido)-athylmercapto]methyl]-imidazole 4 aus a-substituierten 4(5)-Methoxymethyl-5(4)-methyl-imidazolen 2 S O W I~ die Hz-antihistaminische Wirksamkeit der dargestellten 4 beschrieben. Hz-Antihistaminics, 11: Synthesis and Pharmacology of a8ubstituted Metiamide Analogues The synthesis of a-substituted 5-methyl-4-(2-[3-( methy1)t hioureido]ethylthiomethyl)-1Himidazoles 4 from &-substituted 4-methoxymethyl-5-methyl-lH-imidazoles 2 is described. The Hz-antihistaminic activity of the products is reported. Nach Black et al.') besitzt N-Methyl-"-[ 2-[(5-methyl-4-imidazolyl)-methylthio]athyl] -thioharnstoff3) (Me tiamid) ausgepragte H2 -antihistaminkche Wirkung. ImRahmen dieser Arbeit interessierte die Beein flussung der pharmakologischen Wirkung bei Substitution an der dem Imidazolring benachbarten Methylengruppe. Daher wurden verschiedene a-aliphatisch und -aromatisch substituierte Analoge dargestell t und vorzugsweise am isolierten spontan schlagenden Vorhof des Meerschweinchens, sowie am Rattenuterus und reperfundierten Rattenmagen untersucht.xymethyl-5(4)-methyl-imidazole in Betracht. Nachdem es uns gelungen war, 2-sub-Als Schliisselsubstanzen fir die Synthese von 4 kamen a-substituierte 4(5)Hydro-

show abstract

Effect of pH on the Conductivity of Basidiomycetes DNAs Integrated Within Schottky‐Like Junctions

et al. 2020

View full text Add to dashboard Cite

Deoxyribonucleic acid (DNA) has been studied extensively for its unique self‐assembling behavior for applications in the field of molecular electronics. The study of sequence‐specific electronic properties of DNA is one such study which could potentially be utilized as a platform to understand its charge transfer mechanism useful for integration into DNA‐based electronics. However, DNA charge transfer are significantly regulated by various environmental factors, such as pH fluctuations which influences the stability of the double helix structure and strongly attenuates its’ electronic profile. Extreme pH conditions lead to aggravated structural and chemical changes leading to DNA damage, which could have profound biological consequences. In this work, pH influence on basidiomycetes DNAs integrated within an aluminium (Al)‐indium tin oxide (ITO) Schottky junction was investigated. In general, the junction structure exhibited Ohmic behaviour at high acidic (pH 1 to 2) and basic (pH 13 to 14) environments, while behaving as a semiconductive Schottky‐like junction at intermediate pH values. Furthermore, various solid‐state parameters calculated for the DNA enable the gathering of information towards understanding the charge transfer mechanism in DNA molecules as a function of pH conditions, which could act as a potential indicator for various stages of DNA functionality.

show abstract

Measurement of gastric acid secretion by conductivity

Cited by 15 publications

References 12 publications

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

H₂‐Antihistaminika, 2. Mitt. Synthese und Pharmakologie α‐substituierter Metiamid‐Analoga

Effect of pH on the Conductivity of Basidiomycetes DNAs Integrated Within Schottky‐Like Junctions

Contact Info

Product

Resources

About

Measurement of gastric acid secretion by conductivity

Cited by 15 publications

References 12 publications

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

Novel Folded Antenna Design and SAR Analysis for WCE and Biomedical Applications

H2‐Antihistaminika, 2. Mitt. Synthese und Pharmakologie α‐substituierter Metiamid‐Analoga

Effect of pH on the Conductivity of Basidiomycetes DNAs Integrated Within Schottky‐Like Junctions

Contact Info

Product

Resources

About

H₂‐Antihistaminika, 2. Mitt. Synthese und Pharmakologie α‐substituierter Metiamid‐Analoga