scholarly journals SENSOR APPLICATIONS IN ANALYSIS OF DRUGS AND FORMULATIONS

2021 ◽  
pp. 21-23
Author(s):  
AKIFULHAQUE M ◽  
SHIVACHARAN GR ◽  
PARVEEN MD ◽  
SHANTHI PRIYA ◽  
TEJA KUMAR REDDY KONATHAM ◽  
...  
Keyword(s):  
Electronic Nose ◽  
Direct Detection ◽  
Fruit Juices ◽  
Agricultural Products ◽  
Sensory Receptors ◽  
Infectious Agents ◽  
Sensor Applications ◽  
Safety Research ◽  
Magnet Coil ◽  
Nutraceutical Products

Several sensors, biosensors, and actuators are designed and mounted to analyze biomedical nutraceuticals, food, and nutraceutical products in this particular issue. Some applications concern classical subjects such as eubacteria determination in agricultural products, flashing material in foods such as the ethyl group’s chemicals, and fruit juices’ inhibitor properties. In contrast, the different applications are more revolutionary, such as safety research, the manufacture of artificial human senses (electronic nose or tongue), or t Ligands are often characterized by nano biosensors, utilizing biomaterials that involve specific aptamers, antibodies, enzymes, polymers, and sensory receptors. The square measurement of several modal sensing elements, integrated with nanomaterials, increases sensitivity such as nano biosensors and increases nano biosensor productivity. For the nano biosensor with increased efficiency, modality sensing components have been incorporated in this case. The square measurement of the elastic (ME) magnetic machine biosensors was used to classify infectious agents by a magnet coil in contemporary juice or milk and to develop direct detection of infectious agents on food scanning coils.

Advances in Electronic Nose Development for Application to Agricultural Products

2019 ◽  
Vol 12 (10) ◽  
pp. 2226-2240 ◽  
Author(s):  
Wenshen Jia ◽  
Gang Liang ◽  
Zhuojun Jiang ◽  
Jihua Wang
Keyword(s):  
Electronic Nose ◽  
Agricultural Products

Research on Tropical Agricultural Products Quality Recognition and Detection System Based on Electronic Nose Technology

2013 ◽  
Vol 659 ◽  
pp. 75-78 ◽  
Author(s):  
Kun Zhang ◽  
Hai Feng Wang ◽  
Sheng Pei Dai
Keyword(s):  
Electronic Nose ◽  
Bp Neural Network ◽  
Technology Development ◽  
Detection System ◽  
Agricultural Products ◽  
Quality Inspection ◽  
Detection Experiment ◽  
Domestic Technology ◽  
Tropical Crops ◽  
Electronic Nose Technology

This article describes the invention and development of electronic nose technology. According to the International and domestic technology development situation in recent years and based on the basis of the electronic nose technology for mango, banana, papaya and other the typical tropical crops products, for example, to have the quality identification detection experiment with Agricultural and sideline products .Compare PCA-BP the LDA-BP neural network recognition effect Design a conceived program. which is a professional portable electronic nose technology systems, Specifically for Hainan's tropical agricultural products quality inspection.

scholarly journals Rare fungal infectious agents: a lurking enemy

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 1917 ◽  
Author(s):  
Anna Skiada ◽  
Ioannis Pavleas ◽  
Maria Drogari-Apiranthitou
Keyword(s):  
De Novo ◽  
Direct Detection ◽  
Fungal Infections ◽  
Molecular Techniques ◽  
Antifungal Drugs ◽  
Diagnostic Methods ◽  
High Morbidity ◽  
Infectious Agents ◽  
Dimorphic Fungi ◽  
Invasive Infections

In the expanding population of immunocompromised patients and those treated in intensive care units, rare fungal infectious agents have emerged as important pathogens, causing invasive infections associated with high morbidity and mortality. These infections may present either asde novoor as breakthrough invasive infections in high-risk patients with hematologic malignancies receiving prophylactic or empirical antifungal therapy or in patients with central venous catheters. Diagnosis and treatment are challenging. Physicians should have a high index of suspicion because early diagnosis is of paramount importance. Conventional diagnostic methods such as cultures and histopathology are still essential, but rapid and more specific molecular techniques for both detection and identification of the infecting pathogens are being developed and hopefully will lead to early targeted treatment. The management of invasive fungal infections is multimodal. Reversal of risk factors, if feasible, should be attempted. Surgical debridement is recommended in localized mold infections. The efficacy of various antifungal drugs is not uniform. Amphotericin B is active against most yeasts, exceptTrichosporon, as well as againstMucorales,Fusarium, and some species ofPaecilomycesand dimorphic fungi. The use of voriconazole is suggested for the treatment of trichosporonosis and scedosporiosis. Combination treatment, though recommended as salvage therapy in some infections, is controversial in most cases. Despite the use of available antifungals, mortality remains high. The optimization of molecular-based techniques, with expansion of reference libraries and the possibility for direct detection of resistance mechanisms, is awaited with great interest in the near future. Further research is necessary, however, in order to find the best ways to confront and destroy these lurking enemies.

scholarly journals A novel electronic nose for the detection and classification of pesticide residue on apples

RSC Advances ◽  
2021 ◽  
Vol 11 (34) ◽  
pp. 20874-20883
Author(s):  
Yong Tang ◽  
Kunli Xu ◽  
Bo Zhao ◽  
Meichao Zhang ◽  
Chenhui Gong ◽  
...  
Keyword(s):  
Pesticide Residue ◽  
Electronic Nose ◽  
Pesticide Residues ◽  
Agricultural Products ◽  
Recognition Algorithms

The MOS electronic nose in combination with data-recognition algorithms can provide an effective tool for the detection of pesticide residues in agricultural products.

Electronic nose and Alicyclobacillus spp. spoilage of fruit juices: An emerging diagnostic tool

Food Control ◽  
2010 ◽  
Vol 21 (10) ◽  
pp. 1374-1382 ◽  
Author(s):  
E. Gobbi ◽  
M. Falasconi ◽  
I. Concina ◽  
G. Mantero ◽  
F. Bianchi ◽  
...  
Keyword(s):  
Electronic Nose ◽  
Diagnostic Tool ◽  
Fruit Juices

scholarly journals Evaluation of bacteriological techniques, sensory evaluation, gas chromatography, and electronic nose technology for the early detection of Alicyclobacillus acidoterrestris in fruit juices

2007 ◽  
Author(s):  
◽  
Zeenat Harrichandparsad
Keyword(s):  
Sensory Evaluation ◽  
Electronic Nose ◽  
Fruit Juices ◽  
Automated Systems ◽  
Isolation And Identification ◽  
Time Intervals ◽  
Alicyclobacillus Acidoterrestris ◽  
Micro Organisms ◽  
And Control ◽  
Electronic Nose Technology

Alicyclobacillus acidoterrestris is a spore-forming spoilage micro-organism found in fruit juices whose spores are not destroyed by typical pasteurisation. Once its spores outgrow and multiply in finished juice products, they produce two volatile taint compounds namely guaiacol and 2,6-dibromophenol. In the food industry margins for errors are small and monitoring of products to avert such errors is crucial. Conventional microbiological monitoring is one such technique for spoilage micro-organisms another being automated systems which can detect taints. Both these categories were evaluated in this study with the electronic nose and gas chromatograph being the specific automated systems being assessed. Sensory evaluation was also assessed as a diagnostic tool in the detection of taints. Isolation and identification of what was thought to be A. acidoterrestris was a laborious and expensive exercise which eventually proved inconclusive. A pure culture was purchased and juices were then inoculated with two levels of A. acidoterrestris spores and incubated. Juices from each level of inoculation were evaluated at different time intervals via the above-mentioned monitoring techniques. Of the three media assessed in the microbiological method, Bacillus acidoterrestris medium (BAM) was found to be the most effective for enumerating A. acidoterrestris followed by K-medium (KM) then Orange Serum Agar (OSA). While BAM was still indicating the presence of A. acidoterrestris KM and OSA were not (counts of <10cfu/g). This illustrated that this micro-organism could be easily overlooked if KM or OSA were being used to enumerate them. Considering that many workers actually do use KM and OSA as their media of choice in enumerating A. acidoterrestris (perhaps because BAM is very tedious to prepare) the cause for concern is a real one. Assessment of the resultant taints via sensory evaluation after inoculation and incubation reveals the inability of many panellists to detect taints at levels (as assessed by GC) far above their documented threshold values. While GC is an extremely useful and powerful tool, the level of expertise and skill required to use such an instrument cannot be overlooked nor can the expense involved. With regard to the electronic nose assessment for the presence of the volatile taint compounds, an important finding was that the electronic nose indicated significant differences between test and control samples when panellists performing sensory evaluation did not. This also correlated to an interval when enumeration on OSA illustrated no A. acidoterrestris after several days of inoculation and incubation and BAM and KM did. Without implying that the electronic nose has no drawbacks, it has proved, in this instance to be a simple and easy piece of equipment to use. It can be used to detect taints produced under simulated spoilage conditions at reduced analysis times, levels of expertise, cost and energy.

Discrete Metal Deposition on Hydrogen Terminated Silicon Surfaces: Kinetics, Morphologies and Sensor Applications

1996 ◽  
Vol 451 ◽  
Author(s):  
Oliver Chyan ◽  
Jin-Jian Chen ◽  
Junjun Wu ◽  
Steve Chien ◽  
Min Liu
Keyword(s):  
Metal Ion ◽  
Direct Detection ◽  
Early Stage ◽  
Substrate Surface ◽  
Metal Deposition ◽  
Silicon Surfaces ◽  
Specific Chemical ◽  
Sensor Applications ◽  
Nucleation Sites ◽  
Experimental Findings

ABSTRACTThe presence of ultra-trace (as low as 1010 – 1013 atoms/cm2) quantities of metal contaminants on silicon substrates is well known to adversely affect the electrical properties of the silicon based microelectronic devices. In this paper, we report our most recent experimental findings on the trace metal deposition mechanisms and its interplays with silicon substrate surface properties at specific chemical environments. The emphases were on the deposition kinetics and morphology, especially at the early stage of metal out-plating process. For instance, our atomic force microscopy results revealed that the Cu deposition on H-Si(100) surface was dominated by nucleation of nanometer-sized Cu nuclei at the initial stage (less than 60 seconds). The growth of the existing Cu nuclei was suppressed for the initial nucleation period until all the nucleation sites were consumed. The number of nucleation sites were found to closely relate to wafer intrinsic properties and solution compositions. A novel sensor which provides direct detection of part-per-trillion level of metal ion impurities in wet cleaning solutions will also be presented.

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

Pathology of Bone Cells in Pigs with Experimental Turbinate Osteoporosis (Atrophic Rhinitis)

1971 ◽  
Vol 29 ◽  
pp. 304-305
Author(s):  
A. W. Fetter ◽  
C. C. Capen
Keyword(s):  
Mucous Membrane ◽  
Bone Cells ◽  
Atrophic Rhinitis ◽  
Infectious Agents ◽  
Metabolic Disturbances ◽  
Progressive Reduction ◽  
Naturally Occurring ◽  
Fundamental Cause ◽  
Osteocytic Osteolysis ◽  
Uncertain Etiology

Atrophic rhinitis in swine is a disease of uncertain etiology in which infectious agents, hereditary predisposition, and metabolic disturbances have been reported to be of primary etiologic importance. It shares many similarities, both clinically and pathologically, with ozena in man. The disease is characterized by deformity and reduction in volume of the nasal turbinates. The fundamental cause for the localized lesion of bone in the nasal turbinates has not been established. Reduced osteogenesis, increased resorption related to inflammation of the nasal mucous membrane, and excessive resorption due to osteocytic osteolysis stimulated by hyperparathyroidism have been suggested as possible pathogenetic mechanisms.The objectives of this investigation were to evaluate ultrastructurally bone cells in the nasal turbinates of pigs with experimentally induced atrophic rhinitis, and to compare these findings to those in control pigs of the same age and pigs with the naturally occurring disease, in order to define the fundamental lesion responsible for the progressive reduction in volume of the osseous core.

Sign in / Sign up

Export Citation Format

Share Document