scispace - formally typeset
Search or ask a question

Answers from top 10 papers

More filters
Papers (10)Insight
In addition to measuring the redshifts of sources discovered in submillimeter continuum surveys, Z-Spec will demonstrate a novel spectrometer concept well-suited for future far-infrared space missions.
This system represents a near real-time, high-resolution, high-bandwidth mid-infrared spectrometer which is ready to replace traditional Fourier transform spectrometers for many applications in trace gas detection, atmospheric science, and medical diagnostics.
We expect this spectrometer to be a powerful tool for the study of transient specie...
The spectrometer is well suited to visible/near infrared operation, due to its use of path-length differences in crystals, rather than free space path length differences.
The unique capability of this infrared beam projector is its ability to accommodate the large diameter beam of a Fourier transform spectrometer, even in the far infrared mode, without appreciable loss of throughput.
Our findings are in good agreement with the results obtained with other instruments, in particular the Short Wavelength Spectrometer of the Infrared Space Observatory.
The broad spectral coverage of the SPIRE FTS allows for the simultaneous measurement of these closely related chemically species, under the same observing conditions.
Open accessJournal ArticleDOI
Ricardo R.L. Zucca, Y. R. Shen 
01 Jun 1973-Applied Optics
26 Citations
With proper changes in the optical components, the spectral range of the spectrometer can be extended further into the infrared and into the uv.
The experimental method used to quantify the performance level of the spectrometer may also be applied as a general systems test for Fourier transform infrared spectrometers.
We demonstrate improved retrievals for both PRISM and the Next Generation Airborne Visible Infrared Imaging Spectrometer.

Related Questions

What are the types of infrared?5 answersInfrared radiation can be classified into different types based on its characteristics. One type of infrared is long wave infrared, which is characterized by large long wave excesses and is found in certain infrared stars like NML Cygni and NML Tauri. Another type is mid-infrared, which has a wavelength range of 3-5 µm and is used for advanced detection and imaging purposes using type-II InAs/GaSb superlattice. Additionally, there is also narrowband, linear variable filter, transmission grating, and hyperspectral infrared spectral imaging systems. These different types of infrared have their own unique properties and applications in various fields such as astronomy, spectroscopy, and infrared detection and imaging.
What is the infrared spectrum of Thearubigins?5 answersThe infrared spectrum of thearubigins remains largely unresolved, despite many efforts to clarify their structure. The thearubigin fractions from 15 commercially representative teas were analyzed using various spectroscopic techniques, including IR spectroscopy. The data obtained indicated that the thearubigins are structures of not more than 2000 Da, with more than 5000 individual chemical entities detected. These structures are susceptible to concentration-driven aggregation in aqueous solution and retain the chiral properties of the flavanols and theaflavins. The spectroscopic fingerprint of the thearubigins was found to be remarkably similar across the 15 teas analyzed.
How can infrared spectra be used to detect cancer?5 answersInfrared spectroscopy can be used to detect cancer by analyzing the biochemical composition of human cells and detecting biochemical changes in cancer patients at the molecular level. This technique offers non-invasive diagnostics and has already been tested for several diseases including prostate cancer. By using infrared light, abnormal tissues can be detected and the biochemical mapping of human cells can be achieved. Fourier transform infrared spectroscopy, in particular, has the potential to improve clinical decision-making and patient outcomes by providing a simple, rapid, accurate, inexpensive, and non-destructive method for cancer screening and diagnosis. Infrared spectroscopy can also be used to detect cancer markers in blood, including parasites, bacteria, viruses, and important analytes indicative of disease. Overall, infrared spectroscopy offers a promising approach for the detection and diagnosis of cancer.
How long does infrared spectroscopy take?7 answers
How much is an IR spectroscopy?7 answers
How to use infrared spectroscopy machine?8 answers

See what other people are reading

Are there resins of expanded polystyrene recycled with ethyl acetate?
4 answers
Yes, expanded polystyrene (EPS) resins have been successfully recycled using ethyl acetate in various research studies. One study employed ethyl acetate as a solvent to dissolve EPS waste, which was then nanoprecipitated to obtain polystyrene (PS) nanoparticles, showcasing an environmentally friendly approach. Another study utilized ethyl acetate as a biodegradable solvent for recycling EPS, where glycerol was added to enhance the material's flexibility, and recycled gypsum was incorporated to form composites through melt extrusion. Additionally, a different research project explored the dissolution of EPS waste using natural esters like omega-3, providing a sustainable recycling method with economic and environmental advantages. These studies collectively demonstrate the feasibility and effectiveness of recycling EPS resins with ethyl acetate in various innovative ways.
Are there varnish of expanded polystyrene recycled with ethyl acetate?
5 answers
Expanded polystyrene (EPS) can be recycled into varnishes using different solvents. While ethyl acetate is not specifically mentioned in the contexts provided, various solvents like ethylene glycol monoethyl ether acetate, omega-3, glyceryl tributyrate, and ethyl butyrate have been utilized for EPS recycling. These solvents offer environmentally friendly alternatives for EPS recycling, contributing to sustainability efforts. The recycling processes involve dissolving EPS waste in specific solvents, precipitating polystyrene, and recovering the solvents for reuse. The resulting recycled polystyrene can be used in various applications, including varnishes, in combination with biofuels and other additives. Therefore, while ethyl acetate is not explicitly mentioned, the recycling of EPS with various solvents presents a promising avenue for sustainable varnish production.
Are there resians of expanded polystyrene recycled with ethyl acetate?
4 answers
Yes, expanded polystyrene (EPS) has been successfully recycled using ethyl acetate as a solvent. The recycling processes described in the research papers involve dissolving waste EPS in ethyl acetate to obtain valuable products such as EPS nanoparticles, recycled EPS composites with improved properties, and EPS nanofibers through solution blow spinning. These studies highlight the use of ethyl acetate as an environmentally friendly and effective solvent for recycling EPS, showcasing its potential for sustainable waste management practices. The utilization of ethyl acetate in these recycling methods not only aids in reducing environmental impact but also contributes to the creation of value-added materials from discarded EPS, promoting a circular economy approach to plastic waste management.
How does gamma irradiation increase magnesium contents?
4 answers
Gamma irradiation can impact magnesium content in various materials. Research on chitosan-coated magnesium-doped hydroxyapatite layers showed that irradiation increased the amount of tricalcium phosphate (TCP) in the surface layer, affecting the magnesium and calcium content. In another study on MgO nanoparticles, irradiation led to an increase in crystal size with higher dose rates, altering the structural properties and optical absorption of the nanoparticles. Additionally, the mass attenuation coefficient of MgO nanoparticles decreased after gamma irradiation, indicating a change in photon interaction due to size variations. These findings suggest that gamma irradiation can induce changes in magnesium content by influencing crystal structure, size, and elemental composition in various materials.
Effect of maltodextrin and roasting temperature to the tapped density of the powder?
5 answers
The incorporation of maltodextrin and roasting temperature significantly impact the tapped density of powders. Maltodextrin addition has been shown to increase the bulk and tapped density of powders. Higher concentrations of maltodextrin have been associated with increased tapped density of powders, indicating improved powder compaction. Additionally, the spray drying process, influenced by factors like inlet air temperature and atomizing air flow, affects the physical properties of powders, including tapped density. Moreover, the type of carrier agent used during drying techniques, such as maltodextrin or soy protein isolate, can also impact the tapped density of powders. Therefore, both maltodextrin concentration and drying conditions play crucial roles in determining the tapped density of powders.
How to prepare PVA hydrogel for binderless supercapacitors?
5 answers
To prepare PVA hydrogel for binderless supercapacitors, various methods have been explored in recent research. One approach involves synthesizing a conductive self-healable hydrogel electrolyte by mixing supramolecular gel guanosine-boric acid in the PVA matrix, resulting in improved ionic conductivity and self-healing properties. Another method includes the preparation of a conducting copolymer hydrogel of poly(aniline-co-pyrrole)/polyvinyl alcohol through in-situ polymerization, which can serve as a self-standing electrode for supercapacitors, offering high electrochemical capacitance and cycling stability. Additionally, the use of a hydrogel neutral electrolyte synthesized from PVA/hydroxyl ethyl cellulose with citric acid as a crosslinking agent has shown potential for flexible supercapacitors with high voltage capabilities. These methods highlight the versatility and effectiveness of PVA hydrogels in enhancing the performance of binderless supercapacitors.
How can changing cloud cover during droen flight be corrected?
4 answers
Changing cloud cover during drone flights can be corrected by utilizing advanced atmospheric correction techniques. For instance, the use of airborne hyperspectral imagery combined with the ATCOR4 model allows for accurate correction of reflectance values even under challenging conditions. Additionally, incorporating solar spectral irradiance monitor (SSIM) observations as boundary conditions in the atmospheric correction process significantly improves the accuracy of surface reflectance retrievals, especially under overcast conditions. These methods help mitigate the impact of changing cloud cover on drone-based remote sensing data, ensuring more reliable and precise results for various applications such as water quality monitoring and environmental assessments.
Amphiphilic catalysts for catalytic aquathermolysis of high-viscosity oil
4 answers
Amphiphilic catalysts play a crucial role in catalytic aquathermolysis of high-viscosity oil. Research has shown that catalysts like Ni(CH3COO)2 and Zn(CH3COO)2, Al ABSA, and Ni/NC-6.0exhibit significant efficiency in reducing viscosity and upgrading heavy oil. These catalysts promote reactions that lead to viscosity reduction, desulfurization, and the production of lighter hydrocarbon fractions. Additionally, the use of acidic ionic liquids like IL-4, IL-10, and IL-16, as well as transition metal complexes like NAD-Zn, have demonstrated promising results in catalyzing aquathermolysis reactions. The combination of external and in situ catalysts has shown enhanced viscosity reduction rates and improved crude oil quality through the cracking of heavy components into lighter molecules.
How is silica reduced to silicon?
5 answers
Silica can be reduced to silicon through various methods such as metallothermic reduction, magnesiothermic reduction, and electrochemical reduction. Metallothermic reduction involves using a metal reductant like zinc with the assistance of AlCl3 to reduce SiO2 to nano-Si particles. On the other hand, magnesiothermic reduction utilizes magnesium as the reductant to produce silicon at lower temperatures. Electrochemical reduction in molten CaCl2 and CaCl2-NaCl salt mixture is another method where porous SiO2 pellets are reduced to silicon, albeit with contamination challenges. These diverse reduction processes offer insights into different approaches for effectively converting silica into silicon for various applications, including solar cells.
What are the specific properties and characteristics that can be used to authenticate the origin of rice?
5 answers
Specific properties and characteristics utilized to authenticate the origin of rice include volatile organic compounds (VOCs) composition analyzed through headspace solid phase microextraction (HS-SPME) coupled with gas chromatography mass spectrometry (GC-MS), electrochemical fingerprints generated by the interaction between rice and Belousov-Zhabotinski (B-Z) oscillation system, and near-infrared spectroscopy combined with chemometric methods like Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA). These methods enable the differentiation of rice based on markers such as specific wave number bands in infrared spectroscopy, distinct genetic profiles, and unique biomarkers like 2-acetyl-1-pyrroline (2-AP). By leveraging these diverse approaches, the authenticity and geographical origin of rice can be accurately determined, providing consumers with reliable information about the rice they consume.
What are the optical diagnostic methods for peripheral arterial disease?
5 answers
Optical diagnostic methods for peripheral arterial disease (PAD) include various innovative approaches. Artificial intelligence supported infrared thermography (AISIT) captures infrared radiation for angiosome-based tissue perfusion assessment. Laser speckle techniques enable contactless measurement of tissue perfusion, distinguishing between low perfused and healthy feet using dynamic laser speckle and laser speckle contrast analysis. Dynamic diffuse optical tomography (DDOT) measures blood flow during occlusions, extracting biomarkers to quantify perfusion and oxygen consumption in the foot. Color fundus photography with a deep learning model detects subtle vascular variations, aiding in early PAD diagnosis. Dynamic vascular optical spectroscopy (DVOS) monitors real-time perfusion changes in the foot during and after revascularization surgery, offering a radiation-free alternative to X-ray angiography.