Relevant bibliographies by topics / BaGa4S7

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'BaGa4S7'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'BaGa4S7.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "BaGa4S7"

1

Exner, Ginka, Aleksandar Grigorov, Valeriy Badikov, and Valentin Petrov. "Hardness and Young's modulus of BaGa4S7 and BaGa4Se7 nonlinear optical crystals." Optical Materials 133 (November 2022): 112994. http://dx.doi.org/10.1016/j.optmat.2022.112994.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kato, Kiyoshi, Valeriy V. Badikov, Kentaro Miyata, and Valentin Petrov. "Refined Sellmeier equations for BaGa4S7." Applied Optics 60, no. 22 (2021): 6600. http://dx.doi.org/10.1364/ao.430424.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Guo, Yifeng, Yuqiao Zhou, Xinsong Lin, Weidong Chen, and Ning Ye. "Growth and characterizations of BaGa4S7 crystal." Optical Materials 36, no. 12 (2014): 2007–11. http://dx.doi.org/10.1016/j.optmat.2013.12.028.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wu, Qiao, Rong Dai, Lei Zhang, Wei Wang, Fuchun Zhang, and Weibin Zhang. "Theoretical Study of a Novel Infrared Nonlinear Optical Crystal of BaGa4S7." Journal of Nanoelectronics and Optoelectronics 15, no. 11 (2020): 1395–405. http://dx.doi.org/10.1166/jno.2020.2879.

Full text
Abstract:
The first-principles calculation based on density functional theory, the electronic structure and optical properties of BaGa4S7 (BGS) were systematically investigated by using generalized gradient approximation (GGAPBE) and hybrid functional method (HSE06). The results showed that the theoretical results from the HSE06 method coincided well with the experimental values. Geometry optimization showed that the theoretical lattice parameters of the BGS were also in agreement with the experimental values. Furthermore, the results of the electronic structure showed that the BGS is a nonlinear optical crystal with a wide direct bandgap energy value, as the bandgap width obtained by the HSE06 method was 3.54 eV, which was in accordance with the experimental values. The band structure and density values of state calculations showed that the top of the valence band was mainly composed of S-3p orbital and Ga-4s, 4p orbital electron contribution. On the other hand, the bottom of the conduction band was mainly composed of Ga-4s, 4p, S-3p, and Ba-5d orbital electron contribution, showing that the orbital coupling between Ga and S atoms determined the optical properties of the BGS, while the contribution of Ba atoms to the optical properties was small. The optical properties obtained from the calculation results showed that the crystal material had strong absorption and reflection characteristics in the ultraviolet band, good transmittance in the infrared area, average static dielectric constant, and an average refractive index of 2.873, 1.69, respectively. Moreover, the static double refractive index was 0.07, showing that BGS crystal materials had excellent phase matching performance in a wider range of wavelengths, with a high laser damage threshold. These results proved that the BGS could be a promising material for IR nonlinear optical crystals.
APA, Harvard, Vancouver, ISO, and other styles
5

Lin, Xinsong, Ge Zhang, and Ning Ye. "Growth and Characterization of BaGa4S7: A New Crystal for Mid-IR Nonlinear Optics." Crystal Growth & Design 9, no. 2 (2009): 1186–89. http://dx.doi.org/10.1021/cg8010579.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Heiner, Zsuzsanna, Valentin Petrov, and Mark Mero. "Efficient, sub-4-cycle, 1-µm-pumped optical parametric amplifier at 10 µm based on BaGa4S7." Optics Letters 45, no. 20 (2020): 5692. http://dx.doi.org/10.1364/ol.403856.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhang, Jing-Jing, Feng Yang, Shun-Da Yang, et al. "Tunable mid-IR optical parametric amplifier pumped at 1064 nm based on a wideband-gap BaGa4S7 crystal." Infrared Physics & Technology 111 (December 2020): 103571. http://dx.doi.org/10.1016/j.infrared.2020.103571.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mero, Mark, Li Wang, Weidong Chen та ін. "Laser-induced damage of nonlinear crystals in ultrafast, high-repetitionrate, mid-infrared optical parametric amplifiers pumped at 1 μm". Proc. SPIE 11063 (8 липня 2019): 1106307. https://doi.org/10.1117/12.2540125.

Full text
Abstract:
The exceptional power scalability of Yb lasers has enabled the development of pulsed optical parametric amplifiers (OPA’s) operating at the short-wave edge of the mid-IR (MIR) with average powers beyond 10 W simultaneously providing peak powers in excess of 1 GW. Further wavelength extension into the longer-wave MIR is enabled by novel wide-bandgap non-oxide nonlinear crystals that can be pumped directly at 1 μm without detrimental one- and twophoton absorption of pump radiation. Eliminating the usual difference frequency generation step in producing MIR pulses above 5 μm could potentially increase the conversion efficiency of parametric down-conversion devices and enable a significant boost in the attainable average and peak power. Despite their utmost importance, material properties related to ultrafast laser-induced damage in nonlinear crystals are rarely investigated in the corresponding laser parameter range. In order to help unravel the complicated interplay of photorefractive effects, thermal lensing, and selffocusing/ defocusing affecting the beam quality and catastrophic breakdown threshold in MIR OPA’s, we present the nonlinear index of refraction at 1 μm of KTiOAsO4, LiGaS2, and BaGa4S7. The reported data provide crucial design parameters for the development of high-average-power MIR OPA’s. As examples, (i) a 100-kHz, 1.55/3.1 μm dual-beam OPA delivering multi-GW peak power in each beam and a total average power of 55 W and (ii) a 100-kHz, sub-100-fs, 1-μm-pumped OPA tunable in the 5.7-10.5-μm range are briefly presented.
APA, Harvard, Vancouver, ISO, and other styles
9

Saraswati, S. "Fermentasi etanol menggunakan bakteri Zymonas mobilis dari glukosa hasil hidrolisa enzimatik bagas." Jurnal Teknik Kimia Indonesia 6, no. 2 (2018): 609. http://dx.doi.org/10.5614/jtki.2007.6.2.3.

Full text
Abstract:
The resources and reserves of oil which is a non renewable energy are very limited, while the oil consumption is increasing continuously. It is necessary to look for alternative energy. Etanol, a liquid energy, is a renewable alternative energy. Glucose can be used as raw material for etanol production. Glucose can be obtained by enzymatic hydrolysis of bagasse which is a solid waste of sugar canefactory. The objective of this research was to get the optimum condition of etanol production using bagasse as raw material. The experimental research consisted of 2 steps. First step : enzymatic hydrolysis of bagasse with chemical pretreatment process, and the second step was fermentation process using Zymomonas mobilis bacteria. Variables of thefirst step were the NaOH concentration (5%, 7% and 9%) as a pretreatment agent, and cellulase enzyme used (30, 40 and 50 cellulase enzyme units/gram bagasse). For the second step, the variables were glucose concentration (I2.5%, 15%, 20%, 22.5%, and 25%) and the fermentation time (20, 24, 28, 32, 36, 40 and 48 hours). The experiment showed that the best result of the enzymatic hydrolysis could be obtained by NaOH 7% as chemical pretreatment agent and using 50 units of cellulase enzyme/gram bagasse. The cellulose conversion of bagasse was 87% within 42 hours period time. The highest etanol concentration of the fermentation process was 9.238% (weight %) and the yield was 0.4912 grams etanol/gram glucose. It was reached by using 22.5% glucose during 48 hours fermentation time.Keywords: etanol; fermentation; Zymomonas mobilis; glucose; hydrolysis; cellulase enzyme; pretreatment;bagasse AbstrakCadangan minyak bumi yang merupakan non renewable energy (energi tak terbarukan) sangat terbatas, sedang konsumsinya terus meningkat. Untuk itu perlu dicari energi alternatif. Etanol merupakan salah satu energi cair alternatif yang terbarukan (renewable). Bahan baku etanol antara lain adalah glukosa. Glukosa dapat diperoleh dari hidrolisa enzimatik bagas yang merupakan limbah pabrik gula. Penelitian ini bertujuan untuk mendapatkan kondisi yang optimum dari pembuatan etanol dengan bahan baku bagas. Penelitian experimental meliputi dua tahap. Tahap I : proses hidrolisa enzimatik dari bagas dengan perlakuan pendahuluan (pretreatment), dan tahap II adalah proses fermentasi dengan bakteri Zymomonas mobilis. Variabel pada tahap I adalah konsentrasi NaOH sebagai pretreatment agent sebesar 5%, 7% dan 9% serta pemakaian enzim selulase : 30, 40 dan 50 unit enzim selulase/gram bagas. Variabel untuk tahap II adalah konsentrasi glukosa: 12.5%, 15%, 20%, 22.5% dan 25% dan waktu fermentasi 20, 24, 28, 32, 36, 40 dan 48 jam. Hasil penelitian menunjukkan bahwa untuk hidrolisa enzimatik hasil yang terbaik diperoleh dengan NaOH 7% dan 50 unit enzim selulase/gram bagas dengan konversi selulosa 87% dan waktu 42 jam. Untuk fermentasi kadar etanol tertinggi diperoleh pada konsentrasi glukosa 22.5% yaitu sebesar 9.238%, waktu 48 jam dan yield 0.4912 gram etanollgram glukosa.Kata Kunci: etanol; fennentasi; Zymomonas mobilis; glukosa; hidrolisa ; enzim selulase; pretreatment; bagas.
APA, Harvard, Vancouver, ISO, and other styles
10

Selfiani, Risa, and Darmansyah Darmansyah. "PENGGUNAAN KOMPOS BAGASE UNTUK MENGOPTIMALKAN PRODUKSI TANAMAN TERUNG (Solanum melongena L.)." HORTUSCOLER 1, no. 01 (2020): 20–26. http://dx.doi.org/10.32530/jh.v1i01.75.

Full text
Abstract:
Eggplant (Solanum melongena L.) is a plant species that is known as the fruit and vegetables grown for use as a food ingredient. These plants belong to one group of plants that produce seeds Eggplant Trunk divided into two kinds, namely the main stem and branching. Eggplant leaf consists of a petiole and the leaf blade. Eggplant flowers are hermaphrodite flowers, or better known as the bisexual flowers, the flowers are one of the stamen to the pistil. Eggplant fruit is the fruit of a true single.. Cultivation of eggplant in the Project of Independent Business is using composting technology bagase. Bagase compost is compost that comes from bagasse or the rest of the sugar mill. Bagase own compost organic matter content of about 90%, N content of 0,3%, 0,02% P2O5, K20 0,14%, Ca 0,06% and 0,04% Mg. The project goal independent business is the use of compost bagase on the cultivation of eggplant to reduce the use of chemical fertilizers and optimize plant production eggplant, farming systems semi-organic environmentally sustainable and analyze the feasibility of cultivation of eggplant with market potential in Payakumbuh and the District Fifty City. Independent business projects implemented during the four months from September to December 2015 and conducted experiments dikebun State Agricultural Polytechnic Payakumbuh with total area of ​​300 m2. Eggplant crop production on the independent business projects with the use of compost bagase treatment that is 575 Kg/300 m2, a profit of Rp. 835.310, the profitability of 92% and RC Ratio of 1,92.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "BaGa4S7"

1

Hugo, Thomas Johannes. "Pyrolysis of sugarcane bagasse." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5238.

Full text
Abstract:
Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The world’s depleting fossil fuels and increasing greenhouse gas emissions have given rise to much research into renewable and cleaner energy. Biomass is unique in providing the only renewable source of fixed carbon. Agricultural residues such as Sugarcane Bagasse (SB) are feedstocks for ‘second generation fuels’ which means they do not compete with production of food crops. In South Africa approximately 6 million tons of raw SB is produced annually, most of which is combusted onsite for steam generation. In light of the current interest in bio-fuels and the poor utilization of SB as energy product in the sugar industry, alternative energy recovery processes should be investigated. This study looks into the thermochemical upgrading of SB by means of pyrolysis. Biomass pyrolysis is defined as the thermo-chemical decomposition of organic materials in the absence of oxygen or other reactants. Slow Pyrolysis (SP), Vacuum Pyrolysis (VP), and Fast Pyrolysis (FP) are studied in this thesis. Varying amounts of char and bio-oil are produced by the different processes, which both provide advantages to the sugar industry. Char can be combusted or gasified as an energy-dense fuel, used as bio-char fertilizer, or upgraded to activated carbon. High quality bio-oil can be combusted or gasified as a liquid energy-dense fuel, can be used as a chemical feedstock, and shows potential for upgrading to transport fuel quality. FP is the most modern of the pyrolysis technologies and is focused on oil production. In order to investigate this process a 1 kg/h FP unit was designed, constructed and commissioned. The new unit was tested and compared to two different FP processes at Forschungszentrum Karlsruhe (FZK) in Germany. As a means of investigating the devolatilization behaviour of SB a Thermogravimetric Analysis (TGA) study was conducted. To investigate the quality of products that can be obtained an experimental study was done on SP, VP, and FP. Three distinct mass loss stages were identified from TGA. The first stage, 25 to 110°C, is due to evaporation of moisture. Pyrolitic devolatilization was shown to start at 230°C. The final stage occurs at temperatures above 370°C and is associated with the cracking of heavier bonds and char formation. The optimal decomposition temperatures for hemicellulose and cellulose were identified as 290°C and 345°C, respectively. Lignin was found to decompose over the entire temperature range without a distinct peak. These results were confirmed by a previous study on TGA of bagasse. SP and VP of bagasse were studied in the same reactor to allow for accurate comparison. Both these processes were conducted at low heating rates (20°C/min) and were therefore focused on char production. Slow pyrolysis produced the highest char yield, and char calorific value. Vacuum pyrolysis produced the highest BET surface area chars (>300 m2/g) and bio-oil that contained significantly less water compared to SP bio-oil. The short vapour residence time in the VP process improved the quality of liquids. The mechanism for pore formation is improved at low pressure, thereby producing higher surface area chars. A trade-off exists between the yield of char and the quality thereof. FP at Stellenbosch University produced liquid yields up to 65 ± 3 wt% at the established optimal temperature of 500°C. The properties of the bio-oil from the newly designed unit compared well to bio-oil from the units at FZK. The char properties showed some variation for the different FP processes. At the optimal FP conditions 20 wt% extra bio-oil is produced compared to SP and VP. The FP bio-oil contained 20 wt% water and the calorific value was estimated at 18 ± 1 MJ/kg. The energy per volume of FP bio-oil was estimated to be at least 11 times more than dry SB. FP was found to be the most effective process for producing a single product with over 60% of the original biomass energy. The optimal productions of either high quality bio-oil or high surface area char were found to be application dependent.<br>AFRIKAANSE OPSOMMING: As gevolg van die uitputting van fossielbrandstofreserwes, en die toenemende vrystelling van kweekhuisgasse word daar tans wêreldwyd baie navorsing op hernubare en skoner energie gedoen. Biomassa is uniek as die enigste bron van hernubare vaste koolstof. Landbouafval soos Suikerriet Bagasse (SB) is grondstowwe vir ‘tweede generasie bio-brandstowwe’ wat nie die mark van voedselgewasse direk affekteer nie. In Suid Afrika word jaarliks ongeveer 6 miljoen ton SB geproduseer, waarvan die meeste by die suikermeulens verbrand word om stoom te genereer. Weens die huidige belangstelling in bio-brandstowwe en ondoeltreffende benutting van SB as energieproduk in die suikerindustrie moet alternatiewe energie-onginningsprosesse ondersoek word. Hierdie studie is op die termo-chemiese verwerking van SB deur middel van pirolise gefokus. Biomassa pirolise word gedefinieer as die termo-chemiese afbreking van organiese bio-materiaal in die afwesigheid van suurstof en ander reagense. Stadige Pirolise (SP), Vakuum Pirolise (VP), en Vinnige Pirolise word in hierdie tesis ondersoek. Die drie prosesse produseer veskillende hoeveelhede houtskool en bio-olie wat albei voordele bied vir die suikerindustrie. Houtskool kan as ‘n vaste energie-digte brandstof verbrand of vergas word, as bio-houtskoolkompos gebruik word, of kan verder tot geaktiveerde koolstof geprosesseer word. Hoë kwaliteit bio-olie kan verbrand of vergas word, kan as bron vir chemikalië gebruik word, en toon potensiaal om in die toekoms opgegradeer te kan word tot vervoerbrandstof kwaliteit. Vinnige pirolise is die mees moderne pirolise tegnologie en is op bio-olie produksie gefokus. Om die laasgenoemde proses te toets is ‘n 1 kg/h vinnige pirolise eenheid ontwerp, opgerig en in werking gestel. Die nuwe pirolise eenheid is getoets en vegelyk met twee verskillende vinnige pirolise eenhede by Forschungszentrum Karlsruhe (FZK) in Duitsland. Termo-Gravimetriese Analise (TGA) is gedoen om die ontvlugtigingskenmerke van SB te bestudeer. Eksperimentele werk is verrig om die kwaliteit van produkte van SP, VP, vinnige pirolise te vergelyk. Drie duidelike massaverlies fases van TGA is geïdentifiseer. Die eerste fase (25 – 110°C) is as gevolg van die verdamping van vog. Pirolitiese ontvlugtiging het begin by 230°C. Die finale fase (> 370°C) is met die kraking van swaar verbindings en die vorming van houtskool geassosieer. Die optimale afbrekingstemperatuur vir hemisellulose en sellulose is as 290°C en 345°C, respektiewelik, geïdentifiseer. Daar is gevind dat lignien stadig oor die twede en derde fases afgebreek word sonder ‘n duidelike optimale afbrekingstemperatuur. Die resultate is deur vorige navorsing op TGA van SB bevestig. SP en VP van bagasse is in dieselfde reaktor bestudeer, om ‘n akkurate vergelyking moontlik te maak. Beide prosesse was by lae verhittingstempo’s (20°C/min) ondersoek, wat gevolglik op houtskoolformasie gefokus is. SP het die hoogste houtskoolopbrengs, met die hoogste verbrandingsenergie, geproduseer. VP het hootskool met die hoogste BET oppervlakarea geproduseer, en die bio-olie was weens ‘n dramatiese afname in waterinhoud van beter gehalte. Die meganisme vir die vorming van ‘n poreuse struktuur word deur lae atmosferiese druk verbeter. Daar bestaan ‘n inverse verband tussen die kwantiteit en kwaliteit van die houtskool. Vinnige pirolise by die Universiteit van Stellenbosch het ‘n bio-olie opbrengs van 65 ± 3 massa% by ‘n vooraf vasgestelde optimale temperatuur van 500°C geproduseer. Die eienskappe van bio-olie wat deur die nuwe vinnige pirolise eenheid geproduseer is het goed ooreengestem met die bio-olie afkomstig van FZK se pirolise eenhede. Die houtskool eienskappe van die drie pirolise eenhede het enkele verskille getoon. By optimale toestande vir vinnige pirolise word daar 20 massa% meer bio-olie as by SP en VP geproduseer. Vinnige pirolise bio-olie het ‘n waterinhoud van 20 massa% en ‘n verbrandingswarmte van 18 ± 1 MJ/kg. Daar is gevind dat ten opsigte van droë SB die energie per enheidsvolume van bio-olie ongeveer 11 keer meer is. Vinnige pirolise is die mees doeltreffende proses vir die vervaardiging van ‘n produk wat meer as 60% van die oorspronklike biomassa energie bevat. Daar is gevind dat die optimale hoeveelhede van hoë kwaliteit bio-olie en hoë oppervlakarea houtskool doelafhanklik is.
APA, Harvard, Vancouver, ISO, and other styles
2

Anukam, Anthony Ike. "Gasification characteristics of sugarcane bagasse." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1016170.

Full text
Abstract:
Sugarcane is a major crop in many countries. It is the most abundant lignocellulosic material in tropical countries such as South Africa. It is one of the plants with the highest bioconversion efficiency. The sugarcane crop is able to efficiently fix solar energy, yielding some 55 tons of dry matter per hectare of land annually. After harvest, the crop produces sugar juice and bagasse. Sugarcane bagasse is a residue that results from the crushing of sugarcane in the sugar industry. It is a renewable feedstock that can be used for power generation and manufacturing cellulosic ethanol. As biomass, sugarcane bagasse holds promise as a fuel source since it can produce more than enough electricity and heat energy to supply the needs of a common sugar factory. However, in the sugarcane industry the bagasse is currently burnt inefficiently in boilers that provide the heating for the industry. This project seeks to investigate the possibility of gasifying sugarcane bagasse as an efficient conversion technology. The investigation is necessary because fuel properties govern the gasifier design and ultimately, the gasification efficiency. Proximate and ultimate analysis of sugarcane bagasse was conducted after which the results were used to conduct a computer simulation of the mass and energy balance during gasification. The kinetic investigation undertaken through the TGA and DTG analyses revealed the activation energy and pre – exponential factor which were obtained by the model – free Kissinger method of kinetic analysis and were found to be 181.51 kJ/mol and 3.1 × 103/min respectively. The heating value of sugarcane bagasse was also measured and found to be 17.8 MJ/kg, which was used in the calculation of the conversion efficiency of the gasification process. Fuel properties, including moisture content and gasifier operating parameters were varied in order to determine optimum gasifier operating conditions that results in maximum conversion efficiency. The highest conversion efficiency was achieved at low moisture content after computer simulation of the gasification process. Moisture content also affected the volume of CO and H2 as the former decreases with increasing moisture content while the latter increases with increasing moisture content, accelerating the water – gas reaction. Scanning electron microscope fitted to an Energy dispersive X – ray spectroscopy was also used in order to view the shape and size distribution as well as determine the elemental composition of sugarcane bagasse. The results obtained established that the fuel properties and gasification conditions affect the conversion efficiency. During computer simulation, it was established that smaller particle size resulted in higher conversion efficiency. The smaller throat diameter also resulted in higher conversion efficiency. The throat angle of 25° also resulted in higher conversion efficiency. The temperature of input air was also found to be one of the major determining factors in terms of conversion efficiency. The dissertation presents the proximate and ultimate analysis results as well as the kinetic analysis results. The SEM/EDX analysis as well as the computer simulation results of the gasification process is also presented. The major contribution of this project was on the investigation of the gasification characteristics of sugarcane bagasse and the utilization of these in the design of a laboratory scale sugarcane bagasse gasifier with enhanced conversion efficiency through computer simulation.
APA, Harvard, Vancouver, ISO, and other styles
3

Boursier, Elodie. "Génération paramétrique infrarouge dans les cristaux de La3Ga5,5Ta0,5O14 et BaGa4Se7." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT070/document.

Full text
Abstract:
Il y a actuellement un réel besoin de sources lasers tout solide capables d’émettre un rayonnement cohérent depuis l’infrarouge lointain au térahertz pour des applications variées comme la spectroscopie et la détection de molécules d'intérêt atmosphérique par exemple. La meilleure alternative est l’optique non linéaire paramétrique du second ordre permettant la conversion de fréquence d’un laser monochromatique dans un cristal massif aux propriétés optiques adaptées. Cependant il faut trouver de nouveaux matériaux car ceux déjà identifiés ne donnent pas satisfaction, leur grande faiblesse étant un seuil de dommage optique trop bas pour des applications à haute énergie. Nous sommes en mesure de relever ce défi en combinant depuis peu deux faisceaux complètement indépendants en accordabilité et en polarisation dans un échantillon taillé en forme de sphère ou de cylindre. Ainsi, nous étudions directement la génération de différence de fréquence dans le domaine de transparence du cristal en scannant son espace ou un plan. Il s'agit d'identifier les directions, dîtes d’accord de phase, où la biréfringence compense la dispersion en longueur d’onde des indices de réfraction, mais aussi les rendements de conversion et les acceptances spectrale et angulaires associés. Si des photons issus des deux faisceaux incidents traversent le cristal selon ces directions, des photons de longueur d’onde plus grande sont générés, avec une énergie optimale dont la valeur est d’autant plus élevée que le coefficient non linéaire du cristal est fort. La thèse est dédiée à l’étude de nouveaux cristaux uniques acquis d’équipes étrangères leaders dans leur élaboration. L’objectif visé est la conception de sources de lumière de type Oscillateur Paramétrique Optique (OPO) ou Générateur Paramétrique Optique (OPG) accordables dans l’infrarouge ou le térahertz, plus énergétiques que les sources actuelles<br>Nowadays, solid state laser is one way to access the infrared and terahertz light with a good coherence and a high brightness, for broad application prospects like spectroscopy and atmospheric molecules detection. The best way to generate this light is use second order parametric nonlinear optics which allows the frequency conversion of a monochromatic laser through a crystal with appropriate properties. However, the goal is find new materials since a lot of crystals already identified present a too low optical damage threshold for high energy applications. By combining two completely independent tunable and polarized beams in a sample cut as a sphere or a cylinder, we are able to take up the challenge. In this way, we could directly study the difference frequency generation in the whole transparency range by scanning one plane. The principle is to identify not only directions, called phase-matching, where the birefringence compensates the refractive index dispersion but also associated conversion efficiencies and spectral and angular acceptances. When the photons from the two incoming beams get through a crystal in these particular directions, other photons could be generated with higher wavelength and the higher amplitude of the nonlinear coefficient, the stronger the interaction. The PhD is devoted to the study of potential nonlinear crystals acquired thanks to international collaboration with leader group in the material elaboration. The results will enable to perform new parametric light sources like Optical Parametric Oscillator (OPO) or Optical Parametric Generator (OPG) tunable from infrared up to terahertz as the goal is to enhance the generated energy with respect to actual sources
APA, Harvard, Vancouver, ISO, and other styles
4

Woodfield, Peter Lloyd. "Combustion instability in bagasse-fired furnaces." Thesis, The University of Sydney, 2001. https://hdl.handle.net/2123/27860.

Full text
Abstract:
With rapidly increasing interest in a cleaner world environment, biomass com­bustion is becoming a very real alternative energy source to the more traditional coal-fired power stations. Sugar cane bagasse is one such material that is readily available and moreover, has been used as a fuel in the Australian sugar industry for well over thirty years. Today, the most widely utilised bagasse-fired furnace is the 'pneumatic spreader suspension fired furnace'. In this particular design, the solid bagasse particles are blown into the furnace by high velocity air jets, where the majority of the fuel is entrained vertically by a large flow of pre-heated air. This stream is termed 'combustion air' and enters the furnace via a grate spanning the entire furnace floor. Combustion of bagasse in these furnaces has its own special set of problems which appear to be due largely to the high moisture content of the fuel (45 - 55% as fired (wet basis)). Combustion instability in bagasse-fired furnaces is a key issue for operation but is presently not well understood. During periods of instability, there is a con­siderable dulling of the flame, the furnace pressure oscillates, large mounds of wet fuel accumulate on the grate and it becomes impossible to maintain the mill steam requirements. Dixon (1984) describes this as the 'single factor limiting the further development of bagasse suspension firing'. Since the early eighties, the majority of the research into this problem has been on a 'trial and error' basis with only lim­ited success. More recently an in-depth theoretical and computational investigation was undertaken into modelling of bagasse-furnaces (Luo, 1993; Luo and Stanmore, 1994). The work of Luo and Stanmore (1994) and the work of Dixon (1983,1984) provide the starting point for this current research.
APA, Harvard, Vancouver, ISO, and other styles
5

Kamimoto, Lynn K. (Lynn Kam Oi). "Economic feasibility of bagasse charcoal in Haiti." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32937.

Full text
Abstract:
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.<br>Includes bibliographical references (leaves 13-15).<br>The economics of implementing bagasse-based charcoal manufacturing in Haiti was investigated. From these main inputs, three different manufacturing economic scenarios were modeled using a simple, dynamic excel spreadsheet. The first model reflects single family implementation, which reasonable found that a family would be able to make back their start up costs within a month of production. The second model examined sugarcane bagasse charcoal production as an entrepreneurial endeavor for a small community. The third model is similar to the second model, but reflects large-scale factory production. The potential of the second and third models primarily depend on the cost of raw materials and transportation. These models are easily adjusted to reflect market rates and can be generalized to address similar start-up economies.<br>by Lynn K. Kamimoto.<br>S.B.
APA, Harvard, Vancouver, ISO, and other styles
6

Pinheiro, Francisca Gleyciara Cavalcante. "Lignosulfonates production from lignin extracted sugarcane bagasse." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13799.

Full text
Abstract:
Universidade Federal do CearÃ<br>The present work aimed at the production of lignosulfonate, based in the lignin extracted from sugarcane bagasse-cane for using in phenolic resins. The extraction of lignin was carried out using the acetosolv process, which was optimised with a central composite design 22 to evaluate the effects of reaction time and temperature on the extraction yield, weight-average (M &#773;w) and number-average (M &#773;n) molecular weights, relative content of total hydroxyl, phenolic hydroxyl and methoxyl groups. The lignins obtained under conditions that maximized the extraction yield and showed better structural and thermal characteristics were sulfonated to obtain the lignosulfonates. The structural and thermal characteristics of the lignins and lignosulfonates were determined by FT-IR, GPC, 1H-NMR and 13C-NMR, DSC and TGA. The results show that the best extraction yield (64.5%) was obtained with 95% (w/w) of acetic acid, the addition of 0.1% HCl, at a temperature of 187 ÂC and reaction time of 40 min. However, with the same concentration of acetic acid and reaction time of 15 min at 187 ÂC, the extraction yield decreased to 55.6%  4.5%, without significant reduction. Furthermore, the increase in temperature of 187 ÂC to 205 ÂC was not enough to cause a significant increase in the relative content of hydroxyls and reduction of the relative content of methoxyl. These results show that the most appropriate conditions for adequate extraction of lignin for application in resins are: 95% (w/w) of acetic acid, addition of 0.1% of HCl, temperature of 187 ÂC and reaction time of 15 min. The acetosolv lignins showed p-hidroxifenila units as major constituent, higher thermal stability and higher purity than the commercial Kraft lignin. The glass transition temperature of the Kraft lignins was lower than that of the acetosolv lignin. This is due to the hydrophilic character and the presence of carbohydrates in the Kraft lignin. The lignosulfonates obtained in this study showed structural characteristics suitable for application in phenolic resins, because they showed high reactivity due to the greater presence of p-hidroxifenila units as major constituent, low molecular weights (4023&#61485;4878 g/mol), greater stability and greater purity compared to commercial sodium lignosulfonate. Therefore, lignosulfonates obtained in this work are more suitable for use in phenolic resins than commercial sodium lignosulfonate used for comparison.<br>O presente trabalho teve por objetivo a produÃÃo de lignossulfonato, a partir da lignina extraÃda do bagaÃo da cana-de-aÃÃcar para aplicaÃÃo em resinas fenÃlicas. Foi realizada a otimizaÃÃo da extraÃÃo da lignina do bagaÃo de cana-de-aÃÃcar utilizando o processo acetosolv. Para tanto, empregou-se um delineamento composto central 22 para analisar os efeitos do tempo de reaÃÃo e da temperatura no rendimento de extraÃÃo, massa molar ponderal mÃdia, massa molar numÃrica mÃdia, e conteÃdo relativo de hidroxilas totais, hidroxilas fenÃlicas e metoxilas. As ligninas obtidas nas condiÃÃes que maximizaram o rendimento de extraÃÃo e que mostraram melhores caracterÃsticas estruturais e tÃrmicas foram sulfonadas para obtenÃÃo dos lignossulfonatos. As caracterÃsticas estruturais e tÃrmicas das ligninas e dos lignossulfonatos foram determinadas por FT-IR, GPC, RMN-1H e 13C, TGA e DSC. Os resultados mostram que o melhor rendimento de extraÃÃo (64,5 % 4,2%) foi obtido com 95% (m/m) de Ãcido acÃtico, adiÃÃo de 0,1% de HCl, a uma temperatura de 187 &#61616;C e tempo de reaÃÃo de 40 min. No entanto, com a mesma concentraÃÃo de soluÃÃo de Ãcido acÃtico e com tempo de reaÃÃo de 15 min a 187ÂC, o rendimento de extraÃÃo diminuiu para 55,6%  4,5%, nÃo sendo significativa esta reduÃÃo. AlÃm disto, a elevaÃÃo da temperatura de 187ÂC para 205ÂC nÃo foi suficiente para causar um aumento significativo no conteÃdo relativo de hidroxilas e reduÃÃo do conteÃdo relativo de metoxila. Esses resultados mostram que as condiÃÃes mais adequadas para extraÃÃo da lignina a ser aplicada em resinas sÃo: 95% (m/m) de Ãcido acÃtico, adiÃÃo de 0,1% de HCl, temperatura de 187 &#61616;C e tempo de reaÃÃo de 15 min. As ligninas acetosolv apresentaram unidades p-hidroxifenila como constituinte majoritÃrio, maior estabilidade tÃrmica e maior pureza em relaÃÃo à lignina Kraft comercial. A temperatura de transiÃÃo vÃtrea da lignina Kraft foi menor do que à das ligninas acetosolv, devido à sua caracterÃstica hidrofÃlica e à presenÃa de carboidratos na lignina Kraft. Os lignossulfonatos obtidos no presente trabalho apresentaram caracterÃsticas estruturais adequadas para aplicaÃÃo em resinas fenÃlicas, pois mostraram alta reatividade devido a maior presenÃa de unidades p-hidroxifenila como constituinte majoritÃrio, baixas massas molares (4023 a 4878 g/mol), maior estabilidade e uma maior pureza em relaÃÃo ao lignossulfonato de sÃdio comercial. Portanto, os lignossulfonatos obtidos no presente trabalho sÃo mais adequados para aplicaÃÃo em resinas fenÃlicas do que o lignossulfonato de sÃdio comercial utilizado no presente trabalho.
APA, Harvard, Vancouver, ISO, and other styles
7

Oderah, Vincent. "Shear strength behaviour of sugarcane bagasse reinforced soils." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20106.

Full text
Abstract:
Sugarcane is considered as the most abundant plant based crop grown in the tropics and part of the temperate climates. Its by-product, sugarcane bagasse, constitutes 30% of the total production. In the past, it was considered as waste material but contemporaries through innovative research projects over the years have found uses for it. Among these projects is soil reinforcement, which provides an alternative application to industrial by-products and natural fibres as a way of reducing their environmental footprints and contributing to sustainable geotechnics. Although bagasse morphological composition contains structural elements ideal for reinforcement and composite materials, it has received little research as a standalone reinforcement material. Because of this, a direct shear test was therefore initiated to establish the usefulness of using sugarcane bagasse as a soil reinforcement material by comparing the extent of shear strength and stiffness response due to its inclusion to unreinforced soil. Three different types of bagasse, fibre, millrun and pith, were added to unreinforced soil in percentage by weight content of 0.3 - 1.7. The bagasse was added to Klipheuwel sand, Cape Flats sand and Kaolin Clay at both dry and moist conditions. In addition, durability studies involving 12 cycles of wetting and drying, and soaking for a period of 14 days were constituted.
APA, Harvard, Vancouver, ISO, and other styles
8

Lyatuu, Eric M. M. "Utilization of lignocellulosic wastes : the sugarcane bagasse case." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/847663/.

Full text
Abstract:
This work was stimulated by the fact that supplies of fossil fuels are finite, while there are abundant renewable forms of energy waiting to be tapped. The current fossil fuels store is reviewed before identifying usable forms of renewable energy which could replace or supplement fossil fuels. Bagasse - a solid byproduct in sugarcane milling - is then described in detail as a typical lignocellulosic waste which forms part of a larger class of renewable energy sources called biomass. The chemical and physical characteristics, as well as world-wide regions of production of bagasse are described. The research work therefore concerned itself with investigating various physical methods of conserving renewable energy by improving on the extraction efficiency of such energy from bagasse. The equipment used for carrying out the research work is described in detail in chapter two. The methods employed in carrying out the investigations are similarly described in the same chapter, detailing every step in the investigations, including any precautions which had to be taken. The crude results from the investigations are analysed in detail in chapter three so that fuel combustion, combustion oxygen demand, heat and mass balances for the process are considered. An analysis of the boiler system - the main equipment in the investigations - is also carried out in chapter three so that temperatures, gas flow patterns, particle elutriations and size distributions of the fuel in the system are established. Conclusions of the investigations are then drawn from the analyses of chapter three. As a prelude to the conclusion of the work, an industrial biomass survey carried out in Tanzania is analysed to show that bagasse is not the only lignocellulosic which is produced industrially, and that reasonable financial savings can be obtained from these other lignocellulosics. The work concludes by describing a few areas of related research interest for further investigation.
APA, Harvard, Vancouver, ISO, and other styles
9

Plaza, Floran. "Measuring, modelling and understanding the mechanical behaviour of bagasse." University of Southern Queensland, Faculty of Engineering and Surveying, 2002. http://eprints.usq.edu.au/archive/00001485/.

Full text
Abstract:
In the Australian sugar industry, sugar cane is smashed into a straw like material by hammers before being squeezed between large rollers to extract the sugar juice. The straw like material is initially called prepared cane and then bagasse as it passes through successive roller milling units. The sugar cane materials are highly compressible, have high moisture content, are fibrous, and they resemble some peat soils in both appearance and mechanical behaviour. A promising avenue to improve the performance of milling units for increased throughput and juice extraction, and to reduce costs is by modelling of the crushing process. To achieve this, it is believed necessary that milling models should be able to reproduce measured bagasse behaviour. This investigation sought to measure the mechanical (compression, shear, and volume) behaviour of prepared cane and bagasse, to identify limitations in currently used material models, and to progress towards a material model that can predict bagasse behaviour adequately. Tests were carried out using a modified direct shear test equipment and procedure at most of the large range of pressures occurring in the crushing process. The investigation included an assessment of the performance of the direct shear test for measuring bagasse behaviour. The assessment was carried out using finite element modelling. It was shown that prepared cane and bagasse exhibited critical state behaviour similar to that of soils and the magnitudes of material parameters were determined. The measurements were used to identify desirable features for a bagasse material model. It was shown that currently used material models had major limitations for reproducing bagasse behaviour. A model from the soil mechanics literature was modified and shown to achieve improved reproduction while using magnitudes of material parameters that better reflected the measured values. Finally, a typical three roller mill pressure feeder configuration was modelled. The predictions and limitations were assessed by comparison to measured data from a sugar factory.
APA, Harvard, Vancouver, ISO, and other styles
10

VALIM, ISABELLE CUNHA. "MODELING AND OPTIMIZATION STRATEGIES IN SUGARCANE BAGASSE DELIGNIFICATION PROCESS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35985@1.

Full text
Abstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O bagaço da cana-de-açúcar é uma biomassa vegetal que possui muito potencial de uso devido aos seus três elementos estruturais: celulose, hemicelulose e lignina. Para servir como matéria prima na produção de insumos, o bagaço da cana-de-açúcar precisa passar por um processo de pré-tratamento. Nesse estudo, duas metodologias para o processo de pré-tratamento do bagaço da cana-de-açúcar foram utilizadas: a deslignização via peróxido de hidrogênio (H2O2) e via dióxido de carbono supercrítico (ScCO2). Para o estudo utilizando H2O2, foram desenvolvidos modelos a partir de planejamento experimental, Algoritmos Genéticos (GA, do inglês Genetic Algorithms), Redes Neurais Artificiais (RNA) e Neuro-Fuzzy (ANFIS). As variáveis independentes foram temperatura (25 – 60 graus Celsius), concentração de H2O2 (2 – 15 por cento m/v) e pH (10 – 13), tendo como resposta os teores de lignina residual e oxidada no processo, através de análises de FT-IR e análise pelo método de Klason. Para o estudo utilizando ScCO2 foram construídos modelos a partir de RNA e ANFIS. As variáveis estudadas no processo foram: temperatura (35 – 100 graus Celsius), pressão (75- 300 bar) e teor de etanol na solução de co-solvente (0 – 100 graus Celsius). De modo geral, para os dois processos, os modelos desenvolvidos consideram as variáveis independentes como sendo neurônios na camada de entrada e as variáveis dependentes como sendo neurônios na camada de saída. Todos os modelos neurais e ANFIS desenvolvidos neste trabalho foram avaliados pelo coeficiente de correlação e índices de erro (SSE, MSE e RMSE), além do número de parâmetros. Os resultados mostraram que, dentre estas estratégias estudadas, os modelos neurais se mostraram mais satisfatórios para predição das respostas do pré-tratamento com H2O2, já que se encaixa nos índices de performance estipulados. O mesmo ocorreu no modelo neural para predição do teor de lignina residual no pré-tratamento com ScCO2. Para cada modelo polinomial e neural desenvolvido, foi realizada a investigação das superfícies de respostas e das curvas de contorno. Com esse recurso, foi possível a identificação dos melhores pontos operacionais para os processos, visando a minimização dos teores de lignina residual e oxidada na biomassa.<br>Sugarcane bagasse is a plant biomass that has a great potential for use due to its three structural elements: cellulose, hemicellulose and lignin. To serve as raw material in the production of other products, sugarcane bagasse needs to undergo a pre-treatment process. In this study, two methodologies for the sugarcane bagasse pretreatment process were used: delignification via hydrogen peroxide (H2O2) and via supercritical carbon dioxide (ScCO2). The models for study the process with H2O2 were developed from experimental planning, Genetic Algorithms (GA), Artificial Neural Networks (ANN) and Neuro-Fuzzy (ANFIS). The independent variables were: temperature (25- 60 degrees Celsius), H2O2 concentration (2 - 15 percent m/v) and pH (10-13). The residual and oxidized lignin contents in the process were evaluated from FT-IR and Klason method analysis. The models for study the process with ScCO2 were developed from RNA and ANFIS. The variables studied in the process were: temperature (35-100 degrees Celsius), pressure (75-300 bar) and ethanol content in the aqueous solution of co-solvent (0-100 percent). In general, for the two processes, the developed models consider the independent variables to be neurons in the input layer and the dependent variables to be neurons in the output layer. All the neural and ANFIS models developed in this study were evaluated by the correlation coefficient and error indexes (SSE, MSE and RMSE), as well as the number of parameters. From the stipulated indices of performance, among the results obtained by the different strategies, the neural models were the most satisfactory for the prediction of pretreatment responses with H2O2. The same occurred in the neural model for prediction of the residual lignin content in the pre-treatment with ScCO2. Response surfaces and the contour curves were investigated for each polynomial and neural model developed. With this resource, it was possible to identify the best operational points for the processes, pointing at minimizing the residual and oxidized lignin contents in the biomass.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "BaGa4S7"

1

Yehudi, Manof ha-Merkaz le-medaʻ, ed. Bagats. Maḥleḳet ha-pirsumim ṿeha-meḥḳarim, Manof - ha-Merkaz le-medaʻ Yehudi, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Brazil. Secretaria de Tecnologia Industrial. Coordenadoria de Informações Tecnológicas. Serviço de Editoração., ed. Bagaço: Guia de informação e bibliografia básica = Bagasse : information guide and basic bibliography. MIC/STI, Coordenadoria de Informações Tecnológicas, Serviço de Editoração, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lapra, Paule. Bagasse: Poéhistoires d'une île à sucre. Surya éditions, 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shin Enerugī Sangyō Gijutsu Sōgō Kaihatsu Kikō (Japan). Baiofyūeru hatsuden no dōnyū kanōsei chōsa. Shin Enerugī Sangyō Gijutsu Sōgō Kaihatsu Kikō, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gupta, Tirath R. Economic and policy issues for bagasse-based paper and newsprint in India. Oxford & IBH Pub. Co., 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Acchar, Wilson, and Eduardo J. V. Dultra. Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Lie, Christiawan. Kisah petualangan Bagas: Tentara pelajar. PT. Era Media Informasi, 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Sitanggang, S. R. H. Tombak pusaka si Bagas Marhusor. Kerjasama Penerbit PT. Winindo Trijaya Group dengan Departemen Pendidikan dan Kebudayaan, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cavorzin, Leila Le. Bombardes et binious: Du luthier aux bagads. Libris, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Foḳs, Yosi. ha-Meḥdal: Ketsad ifsher Bagats et haḳamat Ḥamasṭan bi-Retusʻat ʻAzah. Forum mishpaṭi le-maʻan Yiśraʼel, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "BaGa4S7"

1

Gooch, Jan W. "Bagasse." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_986.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Parameswaran, Binod. "Sugarcane Bagasse." In Biotechnology for Agro-Industrial Residues Utilisation. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9942-7_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Acchar, Wilson, and Eduardo J. V. Dultra. "Introduction." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Acchar, Wilson, and Eduardo J. V. Dultra. "Porcelain Tile." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Acchar, Wilson, and Eduardo J. V. Dultra. "Solid Waste Materials." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Acchar, Wilson, and Eduardo J. V. Dultra. "Coffee Industry in Brazil." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Acchar, Wilson, and Eduardo J. V. Dultra. "Using CBA in Ceramic Formulations." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Acchar, Wilson, and Eduardo J. V. Dultra. "Theoretical Analysis of Crystalline Phases." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Acchar, Wilson, and Eduardo J. V. Dultra. "Physical and Mechanical Properties of CBA Incorporated Material." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Acchar, Wilson, and Eduardo J. V. Dultra. "Mullite and Leucite Formation." In Ceramic Materials from Coffee Bagasse Ash Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15281-3_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "BaGa4S7"

1

Jesenovec, Jani, Peter G. Schunemann, and Kevin T. Zawilski. "Inhomogeneities and continued improvements in BaGa4Se7 growth and devices." In Nonlinear Frequency Generation and Conversion: Materials and Devices XXIV, edited by Jeffrey Moses. SPIE, 2025. https://doi.org/10.1117/12.3042073.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Carson, Alexander, Jani Jesenovec, Amelia Carpenter, et al. "Measurement of laser induced damage thresholds of BaGa4Se7 at various wavelengths." In Nonlinear Frequency Generation and Conversion: Materials and Devices XXIV, edited by Jeffrey Moses. SPIE, 2025. https://doi.org/10.1117/12.3041993.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

A, Naseeba, MAYA G, and Roshin R. "Development of Control Strategy for Bagasse-Fired Boiler." In 2024 International Conference on Futuristic Technologies in Control Systems & Renewable Energy (ICFCR). IEEE, 2024. http://dx.doi.org/10.1109/icfcr64128.2024.10763252.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, Kai, Degang Xu, Jining Li, Kai Zhong, Yuye Wang, and Jianquan Yao. "Wideband tunable mid-infrared laser generating from near-infrared laser pumped BaGa4Se7 crystal." In Laser Technology and Applications, edited by Pu Zhou. SPIE, 2024. https://doi.org/10.1117/12.3046599.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Schunemann, Peter G., and Kevin T. Zawilski. "Seeded growth of BaGa4S7 and BaGa4Se7 for mid-IR frequency conversion." In Advanced Solid State Lasers. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/assl.2022.am6a.2.

Full text
Abstract:
Here we demonstrate seeded horizontal gradient freeze growth of the nonlinear crystals BaGa4S7 and BaGa4Se7 along crystallographic directions optimized for simplified fabrication and maximum yield of oriented device crystals for mid-IR frequency generation.
APA, Harvard, Vancouver, ISO, and other styles
6

Schunemann, Peter G., and Kevin T. Zawilski. "Phase-matched crystal growth of BaGa4S7 and BaGa4Se7." In Nonlinear Frequency Generation and Conversion: Materials and Devices XXI, edited by Peter G. Schunemann and Valentin Petrov. SPIE, 2022. http://dx.doi.org/10.1117/12.2613759.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Exner, Ginka, Aleksandar Grigorov, Valeriy Badikov, and Valentin Petrov. "Measurements of the Hardness and Young’s Modulus of the Nonlinear Optical Crystals BaGa4S7 and BaGa4Se7." In Frontiers in Optics. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jtu4a.8.

Full text
Abstract:
We report hardness and Young’s modulus measurements for two recently developed and very promising non-chalcopyrite mid-IR crystals, BaGa4S7 and BaGa4Se7. The hardness is 556.2 kg/mm2 for the sulfide and 336 kg/mm2 for the selenide compound.
APA, Harvard, Vancouver, ISO, and other styles
8

Jesenovec, Jani, Kevin T. Zawilski, and Peter G. Schunemann. "Improvements in high purity seeded growth of BaGa4S7 and BaGa4Se7." In Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, edited by Peter G. Schunemann. SPIE, 2024. http://dx.doi.org/10.1117/12.3010825.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Schunemann, Peter G., and Kevin T. Zawilski. "Single Crystal Growth of BaGa4S7 and BaGa4Se7 by the Horizontal Gradient Freeze Technique." In CLEO: Applications and Technology. OSA, 2018. http://dx.doi.org/10.1364/cleo_at.2018.jth2a.84.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Schunemann, Peter G. "New nonlinear crystals for ultrafast frequency conversion in the mid-infrared." In Ultrafast Optics. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ufo.2023.th3.2.

Full text
Abstract:
Improved all-epitaxial processing of orientation-patterned OP-GaAs and OP-GaP, advances in size and quality of ZnGeP2 and CdSiP2, and the advent of BaGa4S7, BaGa4S7, and their quaternary analogues, are extending ultrafast laser output deep into the mid-infrared. Here we report on growth, processing, properties, device performance, and search for new materials.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "BaGa4S7"

1

Cuzens, J. E. Conversion of bagasse cellulose into ethanol. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/674641.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Baker, E. G., M. D. Brown, and R. J. Robertus. Catalytic gasification of bagasse for the production of methanol. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/5124590.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kadam, K. Environmental Life Cycle Implications of Using Bagasse-Derived Ethanol as a Gasoline Oxygenate in Mumbai (Bombay). Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/772426.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Rodríguez-Machín, Lizet, Luis Ernesto Arteaga-Pérez, Pérez-Bermúdez Raúl Alberto, et al. Effect of pretreatment with an organic solution on yield and quality of bio-oil obtained from fast pyrolysis of sugarcane bagasse. Peeref, 2023. http://dx.doi.org/10.54985/peeref.2304p9074854.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Nitivattananon, Suchaya. Hydrodynamic of mixed-feed in circulating fluidized bed. Chulalongkorn University, 2009. https://doi.org/10.58837/chula.res.2009.32.

Full text
Abstract:
The research was conducted in a circulating fluidized bed having diameter and height of riser of 5 and 200 cm., respectively, at ambient temperature and pressure. The objective was to study hydrodynamics of mixed-feed between sand and various biomasses including rice husk, sawdust, and bagasse at 50% by volume. The air flow rate was in the range of 4.2-5.7 m/s. The velocity of sand in the riser was obtained by using a high speed camera and an image processing software. The results showed that at the lowest gas velocity the velocities of sand in the mixture were higher than those in the single system. Howerver at the highest gas velocity it was found that the sand velocity in the mixture of sand and sawdust was the highest among all mixtures. Next the experiment was conducted by means of mixture of glass beads and rice husk. It was found that in the bottom part of the riser the velocities of glass beads in the mixing system were lower than those in the single system. Nevertheless, the velocities of glass beads in both systems reached similar values at the top of the riser.
APA, Harvard, Vancouver, ISO, and other styles
6

Commercialization of the Conversion of Bagasse to Ethanol. Summary quarterly report for the period January-September 1999. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/755492.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'BaGa4S7' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography