scholarly journals Processing and Prospect of Electronic Nose

2021 ◽  
Vol 271 ◽  
pp. 01038
Author(s):  
Yibo Deng
Keyword(s):  
Electronic Nose ◽  
Chemical Components ◽  
Sensor Module ◽  
High Infection ◽  
High Incidence ◽  
Volatile Organic ◽  
Information And Communication ◽  
The Times ◽  
Novel Coronavirus ◽  
Very High

Recently, a Novel Coronavirus Pneumonia (NCP) swept the globe. This kind of new virus has extremely high infection efficiency, which has brought great disaster to human's production and daily life. However, it is reported that lung cancer and other diseases with a high incidence will lead to a very high mortality rate if they are not diagnosed and treated in time. Therefore, it is urgent to design an accurate and convenient new diagnostic equipment. Due to the increasing innovation of sensor module in the field of Information and Communication Technology (ICT), electronic nose emerges as the times require. The device can use sensors to analyze Volatile Organic Compounds exhaled by people with certain diseases and identify chemical components of various odor and flavor. In addition, many other types of sensors and classification methods such as machine learning (ML) algorithms are also mentioned in this paper. At the end of the paper, the author attached a related experiment and some shortcomings and prospects of electronic nose as well.

التغير المناخي واثره في المقنن المائي لمحصول العنب في محافظة ديالى

2019 ◽  
Vol 1 (34) ◽  
pp. 391-422
Author(s):  
اشواق حسن حميد صالح
Keyword(s):  
Climate Change ◽  
Statistical Analysis ◽  
Wind Speed ◽  
Extreme Temperature ◽  
Solar Brightness ◽  
The Subject ◽  
Climate Station ◽  
The Times ◽  
High Level ◽  
Very High

Climate change and its impact on water resources is the problem of the times. Therefore, this study is concerned with the subject of climate change and its impact on the water ration of the grape harvest in Diyala Governorate. The study was based on the data of the Khanaqin climate station for the period 1973-2017, (1986-2017) due to lack of data at governorate level. The general trend of the elements of the climate and its effect on the water formula was extracted. The equation of change was extracted for the duration of the study. The statistical analysis was also used between the elements of the climate (actual brightness, normal temperature, micro and maximum degrees Celsius, wind speed m / s, relative humidity% The results of the statistical analysis confirm that the water ration for the study area is based mainly on the X7 evaporation / netting variable, which is affected by a set of independent variables X1 Solar Brightness X4 X5 Extreme Temperature Wind Speed ​​3X Minimal Temperature and Very High Level .

scholarly journals Immediate rehabilitation with feeding appliance of a three day old neonate with cleft lip and palate- a case report

2017 ◽  
Vol 13 (2) ◽  
pp. 293-295
Author(s):  
Deepika Kapoor ◽  
Deepanshu Garg
Keyword(s):  
Case Report ◽  
Cleft Lip ◽  
Multidisciplinary Approach ◽  
Cleft Lip And Palate ◽  
Facial Growth ◽  
Orofacial Clefts ◽  
High Incidence ◽  
Negative Effect ◽  
Growth Development ◽  
Very High

Orofacial clefts (OFC) are one of the most common congenital problems seen with a very high incidence. It imparts a negative effect on the overall health of the child by hindering in his feeding practices, normal facial growth, development of dentition and hence speech. Infants born with orofacial clefts have oronasal communication which creates a problem with the creation of negative pressure inside the oral cavity required for suckling.The treatment for such patients is with the multidisciplinary approach but the preliminary  concern for the neonate is to help with the feeding for which a feeding appliance is given. This case report presents a case of a 3-day old infant to whom a feeding appliance was given to aid in suckling. 

Discriminative detection of volatile organic compounds using an electronic nose based on TiO2 hybrid nanostructures

2021 ◽  
pp. 130124
Author(s):  
Patrick P. Conti ◽  
Rafaela S. Andre ◽  
Luiza A. Mercante ◽  
Lucas Fugikawa-Santos ◽  
Daniel S. Correa
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Electronic Nose ◽  
Hybrid Nanostructures ◽  
Volatile Organic

scholarly journals Halogenated Volatile Organic Compounds in Water Samples and Inorganic Elements Levels in Ores for Characterizing a High Anthropogenic Polluted Area in the Northern Latium Region (Italy)

2021 ◽  
Vol 18 (4) ◽  
pp. 1628
Author(s):  
Mario Vincenzo Russo ◽  
Ivan Notardonato ◽  
Alberto Rosada ◽  
Giuseppe Ianiri ◽  
Pasquale Avino
Keyword(s):  
Organic Compounds ◽  
Mean Value ◽  
Greenhouse Crops ◽  
River Waters ◽  
Liquid Liquid Extraction ◽  
Volatile Organic ◽  
High Concentrations ◽  
Very High ◽  
Inorganic Fraction

This paper shows a characterization of the organic and inorganic fraction of river waters (Tiber and Marta) and ores/soil samples collected in the Northern Latium region of Italy for evaluating the anthropogenic/natural source contribution to the environmental pollution of this area. For organic compounds, organochloride volatile compounds in Tiber and Marta rivers were analyzed by two different clean-up methods (i.e., liquid–liquid extraction and static headspace) followed by gas chromatography–electron capture detector (GC-ECD) analysis. The results show very high concentrations of bromoform (up to 1.82 and 3.2 µg L−1 in Tiber and Marta rivers, respectively), due to the presence of greenhouse crops, and of chloroform and tetrachloroethene, due to the presence of handicrafts installations. For the qualitative and quantitative assessment of the inorganic fraction, it is highlighted the use of a nuclear analytical method, instrumental neutron activation analysis, which allows having more information as possible from the sample without performing any chemical-physical pretreatment. The results have evidenced high levels of mercury (mean value 88.6 µg g−1), antimony (77.7 µg g−1), strontium (12,039 µg g−1) and zinc (103 µg g−1), whereas rare earth elements show levels similar to the literature data. Particular consideration is drawn for arsenic (414 µg g−1): the levels found in this paper (ranging between 1 and 5100 µg g−1) explain the high content of such element (as arsenates) in the aquifer, a big issue in this area.

scholarly journals Non-Invasive Method to Detect Infection with Mycobacterium tuberculosis Complex in Wild Boar by Measurement of Volatile Organic Compounds Obtained from Feces with an Electronic Nose System

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 584
Author(s):  
Kelvin de Jesús Beleño-Sáenz ◽  
Juan Martín Cáceres-Tarazona ◽  
Pauline Nol ◽  
Aylen Lisset Jaimes-Mogollón ◽  
Oscar Eduardo Gualdrón-Guerrero ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Wild Boar ◽  
Organic Compounds ◽  
Electronic Nose ◽  
Bovine Tuberculosis ◽  
Human Beings ◽  
Non Invasive ◽  
Testing Phase ◽  
Volatile Organic ◽  
Electronic Nose System

More effective methods to detect bovine tuberculosis, caused by Mycobacterium bovis, in wildlife, is of paramount importance for preventing disease spread to other wild animals, livestock, and human beings. In this study, we analyzed the volatile organic compounds emitted by fecal samples collected from free-ranging wild boar captured in Doñana National Park, Spain, with an electronic nose system based on organically-functionalized gold nanoparticles. The animals were separated by the age group for performing the analysis. Adult (>24 months) and sub-adult (12–24 months) animals were anesthetized before sample collection, whereas the juvenile (<12 months) animals were manually restrained while collecting the sample. Good accuracy was obtained for the adult and sub-adult classification models: 100% during the training phase and 88.9% during the testing phase for the adult animals, and 100% during both the training and testing phase for the sub-adult animals, respectively. The results obtained could be important for the further development of a non-invasive and less expensive detection method of bovine tuberculosis in wildlife populations.

Determining Appropriate Zones for Knowledge Intensive Firms Site Selection Using GIS

2019 ◽  
Vol 10 (1) ◽  
pp. 1-30
Author(s):  
Alireza Mohammadi
Keyword(s):  
Higher Education ◽  
Information And Communication Technology ◽  
Communication Technology ◽  
Site Selection ◽  
Transportation Network ◽  
Theoretical Background ◽  
Analytic Hierarchy ◽  
Information And Communication ◽  
Knowledge Intensive ◽  
Very High

In this study, the integration of fuzzy analytic hierarchy processes (FAHPs) and fuzzy overlays in GIS was used to determine appropriate geographic zones for the establishment of knowledge intensive firms in 22 districts of the Tehran metropolis. According to the theoretical background, a number of criteria were selected for the identification of appropriate geographic zones. The results show that among the selected criteria, proximity to existing knowledge intensity firms, and companies providing information and communication technology (ICT) services, higher education and research centers, being close to convenient transportation network and land use have more important role in the location of firms. According to the findings, among 22 regions, regions 3, 7, 6, 1, 2, 10, 4, 11, and 12 are the most desirable ones for the deployment of firms. Ultimately, regions 6, 7, 3, and 1 have received “very high” priority for the deployment of knowledge intensive firms.

scholarly journals Prevalence of human papillomavirus DNA sequences in an area with very high incidence of cervical carcinoma

1994 ◽  
Vol 70 (4) ◽  
pp. 694-696 ◽  
Author(s):  
CC Pao ◽  
SM Kao ◽  
G-C Tang ◽  
K Lee ◽  
J Si ◽  
...  
Keyword(s):  
Human Papillomavirus ◽  
Cervical Carcinoma ◽  
Dna Sequences ◽  
High Incidence ◽  
Papillomavirus Dna ◽  
Very High

Sick on the Frontlines:A Cross Sectional Study on COVID-19 Infection, Symptom Severity Amongst Emergency Medicine Residents and Fellows in Urban Academic Hospital Settings (Preprint)

2021 ◽  
Author(s):  
Stacey Frisch ◽  
Sarah Jones ◽  
James Willis ◽  
Richard Sinert
Keyword(s):  
New York ◽  
Emergency Medicine ◽  
Cross Sectional Study ◽  
The Novel ◽  
Academic Hospital ◽  
Cross Sectional ◽  
Time Period ◽  
High Infection ◽  
Novel Coronavirus ◽  
Specific Symptoms

BACKGROUND COVID-19, an illness caused by the novel coronavirus SARS-CoV-2, affected many aspects of healthcare worldwide in 2020. From March to May of 2020, New York City (NYC) experienced a large surge of cases. OBJECTIVE The authors aimed to characterize the amount of illness experienced by residents and fellows in 2 NYC hospitals during this time period. METHODS This was a cross-sectional observational study. An IRB-exempt survey was distributed to emergency medicine housestaff in May 2020 and submissions were accepted through August 2020. RESULTS 64 residents and fellows responded to our survey (a 62% response rate). 42% of responders tested positive for SARS-CoV-2 antibodies. Most residents experienced symptoms that could be consistent with COVID-19 however few received PCR testing. Fevers and/or chills along with loss of smell and/or taste were the most specific symptoms for COVID-19, with p-values <0.05. All 13 housestaff who reported no symptoms during the study period tested negative for SARS-CoV-2 antibodies. CONCLUSIONS Our study demonstrated that the rate of COVID-19 illness among emergency department housestaff is much higher than previously reported. Further studies are needed to characterize illness among medical staff in emergency departments across the nation. The high infection rate among emergency medicine trainees stresses the importance of supplying adequate PPE for healthcare professionals.

scholarly journals Interaction betweenPseudomonas aeruginosaandAspergillus fumigatusin cystic fibrosis

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5931 ◽  
Author(s):  
Jingming Zhao ◽  
Wencheng Yu
Keyword(s):  
Cystic Fibrosis ◽  
Antibiotic Sensitivity ◽  
Pathogenic Microorganisms ◽  
Mutual Inhibition ◽  
Sensing System ◽  
High Incidence ◽  
Volatile Organic ◽  
Metabolic Transformation ◽  
Small Colony ◽  
Combined Infection

BackgroundCystic fibrosis (CF) is a disease characterized by chronic airway infection with a high incidence and poor prognosis.Pseudomonas aeruginosaandAspergillus fumigatusare pathogens commonly found in CF patients. Clinically, these two microorganisms often coexist in the airway of CF patients. Combined infection withP. aeruginosaandA. fumigatusresults in worsening lung function and clinical condition.MethodsIn this review, we focus on the mutual inhibition and promotion mechanisms ofP. aeruginosaandA. fumigatusin CF patients. We also summarized the mechanisms of the interaction between these pathogenic microorganisms.ResultsP. aeruginosainhibitsA. fumigatusgrowth through the effects of phenazines, the quorum sensing system, iron competition, bacteriophages, and small colony variants.P. aeruginosainducesA. fumigatusgrowth through volatile organic compounds and subbacteriostatic concentrations of phenazines.A. fumigatusinterferes withP. aeruginosa, affecting its metabolic growth via phenazine metabolic transformation, gliotoxin production, and reduced antibiotic sensitivity.DiscussionCoexistence ofP. aeruginosaandA. fumigatuscan lead to both mutual inhibition and promotion. In different stages of CF disease, the interaction between these two pathogenic microorganisms may shift between promotion and inhibition. A discussion of the mechanisms ofP. aeruginosaandA. fumigatusinteraction can be beneficial for further treatment of CF patients and for improving the prognosis of the disease.

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