Podcasts about zno

Kratkoprozna zbirka klasika sodobne svetovne književnosti bralkam in bralcem v izbrušenem slogu predstavi življenje v Mozambiku, kakršno je, ne da bi podlegla cenenemu eksotizmu ali afektiranemu folklorizmuLetos mineva 50 let, odkar se je Mozambik otresel portugalskega kolonialnega jarma in razglasil neodvisnost. Ob tej priložnosti smo se v tokratnem Sobotnem branju odpravili na literarno potovanje v jugovzhodno Afriko, da bi si pobliže ogledali 800 tisoč kvadratnih kilometrov veliko deželo ob Indijskem oceanu, kjer živi kakih 34 milijonov ljudi. To smo storili s pomočjo Znočenih glasov, kratkoprozne zbirke, ki jo je spisal in leta 1986 objavil Mia Couto, ki velja za osrednje ime sodobne mozambiške književnosti in enega največjih stilistov, ki danes ustvarjajo v portugalskem jeziku. Kako je skozi prizmo Coutovega pisanja torej videti življenje v Mozambiku, smo preverjali v pogovoru s Katjo Zakrajšek, ki je Znočene glasove prevedla za založbo LUD Literatura in jim pripisala spremno besedo. Foto: Goran Dekleva

Summer is heating up and sunshine (and sun burn) is more front of mind than ever. On this episode, we're joined by Kobo skincare and sunscreen formulator, Wannapon (“Noey”) Prakobkich, for an in-depth breakdown of Kobo's June Formula of the Month: KSL-542-AP Zinc Only Sunscreen for Asia Pacific. Tune in to learn how this mineral sunscreen, designed with the Asia and Pacific markets in mind, combines the power of multiple ZnO particle sizes for maximum coverage and minimum whitening.  No time to tune in? A full transcript of the episode is available for download below.   https://koboproductsinc.com/Downloads/Kobo-Non-NanoZnO.pdf  https://koboproductsinc.com/Downloads/Kobo-SunBoosters.pdf  https://koboproductsinc.com/Downloads/Kobo-Koboguard5400.pdf  https://koboproductsinc.com/Downloads/Kobo-Microspheres.pdf  Episode Transcript: https://koboproducts.sharepoint.com/:b:/s/NoFilterwithKoboPodcastEpisodeTranscripts/EfP7O6IaOkJCkJ2TeUk-XtcBlLsOqmF8XLwayRHXSYOxDg?e=7zCget

In today's increasingly connected and digital world, PCBs are the unsung heroes that power our devices, from smartphones to spacecraft. Yet, the art and science of designing these crucial components often go unnoticed. That's where this episode comes in. Today, I hope to shine a spotlight on the critical role PCBs play in modern technology and explore the best practices that drive innovation and reliability.In this episode, I hope to unravel the mysteries of PCB design, tackle complex challenges, and unlock the secrets to creating high-performance, efficient, and reliable circuit boards. Whether you're a seasoned PCB designer looking to sharpen your skills, a budding engineer eager to learn the ropes, or simply a tech enthusiast curious about the technology that shapes our lives, this episode has something for everyone.Today, I will be joined by Dr. Zach Peterson. Zach is a well-known researcher and electronics designer. In 2017, he founded Northwest Engineering Solutions as a technology consultancy and has since grown the company into an innovative design and manufacturing house for advanced electronic products.He conducted his Applied Physics Ph.D. research in ZnO random laser theory and stability and his M.Sc. Physics research in chemisorptive sensors for environmental monitoring at Portland State University. He also received his MBA (Leadership & Finance) from Adams State University. His work has been published in over a dozen peer-reviewed journals and conference proceedings, and he has written 2500+ technical articles on PCB design for a number of companies. He is a member of IEEE Photonics Society, IEEE Electronics Packaging Society, American Physical Society, and the Printed Circuit Engineering Association (PCEA). He previously served as a voting member on the INCITS Quantum Computing Technical Advisory Committee working on technical standards for quantum electronics, and he currently serves on the IEEE P31-86 Working Group focused on Port Interface Representing Photonic Signals Using SPICE-class Circuit Simulators.If Zack looks familiar, you may recognize him from the Altium On-Track and Altium Academy video series and Podcasts. Zach's Contact Information:Zachariah Petersoncontact@nwengineeringllc.comhttps://www.nwengineeringllc.com/

In today's increasingly connected and digital world, PCBs are the unsung heroes that power our devices, from smartphones to spacecraft. Yet, the art and science of designing these crucial components often go unnoticed. That's where this episode comes in.   Today, we shine a spotlight on the critical role PCBs play in modern technology and explore the best practices that drive innovation and reliability. In this episode, Mike Konrad tries to unravel the mysteries of PCB design, tackle complex challenges, and unlock the secrets to creating high-performance, efficient, and reliable circuit boards. Whether you're a seasoned PCB designer looking to sharpen your skills, a budding engineer eager to learn the ropes, or simply a tech enthusiast curious about the technology that shapes our lives, this episode has something for everyone. He is joined by Dr. Zach Peterson. Zach is a well-known researcher and electronics designer. In 2017, he founded Northwest Engineering Solutions as a technology consultancy and has since grown the company into an innovative design and manufacturing house for advanced electronic products. He conducted his Applied Physics Ph.D. research in ZnO random laser theory and stability and his M.Sc. Physics research in chemisorptive sensors for environmental monitoring at Portland State University. He also received his MBA (Leadership & Finance) from Adams State University. His work has been published in over a dozen peer-reviewed journals and conference proceedings, and he has written 2500+ technical articles on PCB design for a number of companies. He is a member of IEEE Photonics Society, IEEE Electronics Packaging Society, American Physical Society, and the Printed Circuit Engineering Association (PCEA). He previously served as a voting member on the INCITS Quantum Computing Technical Advisory Committee working on technical standards for quantum electronics, and he currently serves on the IEEE P31-86 Working Group focused on Port Interface Representing Photonic Signals Using SPICE-class Circuit Simulators.   He will speak on Signal Integrity in Thin PCB Materials and IC Substrates at PCB East in June.

#MásDeUnaMilla #DeporteEsMásQueJuego #QueClaseDeSwing Nueve equipos de la Doble a buscan su primer campeonato y la tradición de esta liga está evidenciada por los años que llevan jugando sus franquicias | Como van los boricuas en las mayores hasta la fecha | Records mundiales en natación para un boricua | Lxs arbitrxs puertorriqueños en fútbol es otra señal del crecimiento de este deporte en la isla | ZNo apta para cardíacos la jornada de anoche del BSN #TiempoDeDeportes #HayPaís #OrgulloPUR

Agradece a este podcast tantas horas de entretenimiento y disfruta de episodios exclusivos como éste. ¡Apóyale en iVoox! #MásDeUnaMilla #DeporteEsMásQueJuego #QueClaseDeSwing Nueve equipos de la Doble a buscan su primer campeonato y la tradición de esta liga está evidenciada por los años que llevan jugando sus franquicias | Como van los boricuas en las mayores hasta la fecha | Records mundiales en natación para un boricua | Lxs arbitrxs puertorriqueños en fútbol es otra señal del crecimiento de este deporte en la isla | ZNo apta para cardíacos la jornada de anoche del BSN #TiempoDeDeportes #HayPaís #OrgulloPUREscucha este episodio completo y accede a todo el contenido exclusivo de Bonita Radio. Descubre antes que nadie los nuevos episodios, y participa en la comunidad exclusiva de oyentes en https://go.ivoox.com/sq/90599

La resistencia antimicrobiana, es un problema creciente para la salud mundial desde hace años. En la producción animal, existe una clara tendencia hacia la reducción del uso de antibióticos, y la industria porcina no está exenta de las restricciones. En este contexto, la etapa del destete es un momento crítico, en el cuál se presentan diferentes desafíos respecto a la formulación de dietas para los lechones, según la zona en la que nos encontremos. Por ejemplo, hay países en donde todavía hay muy poco control sobre el uso de antibióticos como promotores de crecimiento; otros, que ya los están reemplazando por óxido de zinc (ZnO) en concentraciones farmacológicas; y países en donde la adición de ZnO ya no es una alternativa. Lo que vas a aprender: Situación actual en Europa respecto a las restricciones del uso de ZnO y alternativas disponibles. Influencia de los componentes de la dieta en la salud de los lechones. ¿Cómo podemos mitigar el riesgo de diarreas postdestete desde la formulación de la dieta? ¿Es posible la inclusión del retorno económico dentro de un formulador? ¿Cuáles son las nuevas estrategias de formulación y sus ventajas? Nuestro invitado: El Dr. Néstor Gutiérrez, hizo su carrera de nutricionista en Colombia y desde el primer momento se enfocó en la nutrición; al principio, humana y luego por su semejanza, se dedicó a la nutrición porcina. Completó sus estudios en las Universidades de Illinois y Iowa dónde obtuvo sus grados en nutrición animal. Luego, en Holanda comenzó como investigador en la empresa Trouw Nutrition y actualmente se desempeña como nutricionista porcino aplicado global, siendo responsable del mantenimiento y la aplicación de nuevos conceptos en la base de datos de la compañía.

Para oferecer a elevada proteção necessária, os fotoprotetores modernos associam diferentes filtros orgânicos em conjunto com filtros inorgânicos. Didaticamente, os filtros Ultra-Violetas (UV) podem ser divididos em filtros inorgânicos, também chamados físicos, e filtros orgânicos, também chamados químicos. Segundo a diretora Sociedade Brasileira de Dermatologia – Secção RS (SBD-RS), médica Francine Costa, os filtros inorgânicos (físicos) são partículas de óxidos metálicos capazes de, por mecanismo óptico, refletir ou dispersar a radiação incidente. Seus principais representantes são o óxido de zinco (ZnO) e o dióxido de titânio (TiO2).As principais características são a baixa permeação cutânea, com a consequente redução do risco de potencial irritativo e sensibilizante, e sua elevada foto estabilidade, ou seja, a capacidade do filtro manter fotoproteção, mesmo após longos períodos de radiação solar. Ela recomenda o uso de protetor solar inclusive para as pessoas que ficarão sob o guarda-sol na beira-mar e também para todos que, de certa forma, estiverem expostos aos raios solares nos meses de verão. A entrevista é conduzida pela coordenadora de Produção do Correio do Povo, Luciamem Winck e a edição é de Pedro Bastos.

La Dra. Laura Lorena Díaz Flores Profesora Investigadora de la DAIA y estudiantes de Doctorado de la DACB y la DAIA nos hablan sobre la obtención de películas delgadas de ZnO por medio de síntesis química, a partir del proyecto: "Análisis de las transformaciones de fase de óxido de Zinc obtenido por la técnica de hidrólisis forzada en forma de películas delgadas sobre sustratos transparentes". --- Send in a voice message: https://anchor.fm/ciencia-y-tecnologa-ujat/message

В 68 випуску Product&Growth шоу ми поспілувалися з Іваном Міщуком, CMO в ZNO.UA. Про що поговорили? 1. Про ZNO.UA - ринок підготовки до ЗНО. Як працює ринок? 2. Сезональність та специфіка бізнесу. 3. CAC / LTV в такому бізнесі 4. Роль соціальних мереж в залучені лідів - як цей канал працює для ZNO.UA? 5. Як в ZNO.UA відбирають викладачів? 6. Підхід до контент-маркетингу 7. Наприбутковіший предмет: що приносить більше грошей ZNO.UA? 8. Перехід бізнесу з офлайну в онлайн: коронавірус як каталізатор 9. Яка конверсія з ліда в продаж? 10. Конкуренція платних та безкоштовних сервісів 11. Запуск YouTube каналу: стратегія та вплив на бізнес 12. Просування через гіперлокальних блогерів 13. Як потрапив в маркетинг? Телеграм канал Вані: https://t.me/ironic_historian

Henry Jennings from Marcus Today and Adam Dawes from Shaw and Partners go in-depth and stock-specific. Stocks: APA, PRL, RHT, ZNO, NTD, GGUS, NXL, DTC, COO, SEK. Stock of the day is Novonix (NVX). See acast.com/privacy for privacy and opt-out information.

Howard Coleman from TeamInvest and Gary Glover from Novus Capital go in-depth and stock-specific. Stocks: IRE, MCP, CDA, EML, RFG, RMS, MAET, DHG, CCP, ZNO. The stock of the day is Pointsbet (PBH). See acast.com/privacy for privacy and opt-out information.

Andrew Wielandt from DP Wealth Advisory and Michael Gable from Fairmont Equities go in-depth and stock-specific. Stocks: ROBO, ARX, CDA, ZNO, HUB, SLR, AVA, AGH, SDV, PIA. The stock of the day is Tabcorp (TAH). See acast.com/privacy for privacy and opt-out information.

Episode #23 of Spotee – the Your Call hour saw Richard Hemming from the the Under the Radar Report and David Hunt from the Profit Hunters Group answer your questions and shine the spotlight on shares.   Stocks discussed in the episode included $ALU, $CI1, $DXN, $ELD, $HSN, $IPD, $MVP, $PNV, $QHL, $SAR, $SEN, $SPT, $TNT, $VRS, $WOR, $XRO, $ZNO    If you have a question for our guests that you would like answered on the show then: Email: question@spotee.com.au Text: 0480 079 089

Talvez você NÃO esteja obtendo bons resultados porque está praticando alguns desses 7 atrasos de vida! Confira no áudio o que está impedindo (atrasando) você de alcançar os seus sonhos. 1º Atraso de Vida: Não assumir a Autorresponsabilidade. 2º Atraso de Vida: Comparar a sua vida. 3º Atraso de Vida: Não ter clareza. 4º Atraso de Vida: Olhar para o problema e não para a solução. 5º Atraso de Vida: Potencializar as desculpas. 6º Atraso de Vida: Negociar com a mediocridade. 7º Atraso de Vida: Não buscar conhecimento. Me siga nas redes sociais: https://linktr.ee/dsalesoficial Link do vídeo: https://youtu.be/zNo-3_ckUls

This week I review the Flush Mount Album, a Layflat book from Zno, including photos of my own Iceland book, and a brief tutorial on getting started creating your own book. Details on Blog: https://mbp.ac/527 Music by Martin Bailey

This week I review the Flush Mount Album, a Layflat book from Zno, including photos of my own Iceland book, and a brief tutorial on getting started creating your own book. Details on Blog: https://mbp.ac/527 Music by Martin Bailey

We introduce hybrid solar cells with an architecture consisting of an electrodeposited ZnO nanorod array (NRA) coated with a conformal thin layer (< 50 nm) of organic polymer-fullerene blend and a quasi-conformal Ag top contact (Thin/NR). We have compared the performance of Thin/NR cells to conventional hybrid cells in which the same NRAs are completely filled with organic blend (Thick/NR). The Thin/NR design absorbs at least as much light as Thick/NR cells, while charge extraction is significantly enhanced due to the proximity of the electrodes, resulting in a higher current density per unit volume of blend and improved power conversion efficiency. The NRAs need not be periodic or aligned and hence can be made very simply.

Thu, 17 May 2012 01:00:00 Zno

What is the "Real Deal"? Its a commitment that we make when we enter into contract with God. We fulfill our part and things are good! ZNo, so good when we don't hold up our end of the bargain though.

What is the "Real Deal"? Its a commitment that we make when we enter into contract with God. We fulfill our part and things are good! ZNo, so good when we don't hold up our end of the bargain though.

Background: The aim of this study was to establish and validate a practical method to disperse nanoparticles in physiological solutions for biological in vitro and in vivo studies. Results: TiO(2) (rutile) dispersions were prepared in distilled water, PBS, or RPMI 1640 cell culture medium. Different ultrasound energies, various dispersion stabilizers (human, bovine, and mouse serum albumin, Tween 80, and mouse serum), various concentrations of stabilizers, and different sequences of preparation steps were applied. The size distribution of dispersed nanoparticles was analyzed by dynamic light scattering and zeta potential was measured using phase analysis light scattering. Nanoparticle size was also verified by transmission electron microscopy. A specific ultrasound energy of 4.2 x 10(5) kJ/m(3) was sufficient to disaggregate TiO(2) (rutile) nanoparticles, whereas higher energy input did not further improve size reduction. The optimal sequence was first to sonicate the nanoparticles in water, then to add dispersion stabilizers, and finally to add buffered salt solution to the dispersion. The formation of coarse TiO(2) (rutile) agglomerates in PBS or RPMI was prevented by addition of 1.5 mg/ml of human, bovine or mouse serum albumin, or mouse serum. The required concentration of albumin to stabilize the nanoparticle dispersion depended on the concentration of the nanoparticles in the dispersion. TiO(2) (rutile) particle dispersions at a concentration lower than 0.2 mg/ml could be stabilized by the addition of 1.5 mg/ml albumin. TiO(2) (rutile) particle dispersions prepared by this method were stable for up to at least 1 week. This method was suitable for preparing dispersions without coarse agglomerates (average diameter < 290 nm) from nanosized TiO(2) (rutile), ZnO, Ag, SiO(x), SWNT, MWNT, and diesel SRM2975 particulate matter. Conclusion: The optimized dispersion method presented here appears to be effective and practicable for preparing dispersions of nanoparticles in physiological solutions without creating coarse agglomerates.

Abstract The shear viscosity, density, thermal expansivity and specific heat capacity are important factors controlling the morphology, rheology, and texture of volcanic flows and deposits. These physical properties of silicate melts largely depend on chemical composition, water content, crystal content, bubble content and stress applied to the melt. Recently, it has been recognized that the applied stress plays an important role in the so called “glass transition” area of silicate melts. This kinetic boundary between brittle and ductile behavior affects the eruptive style. Thorough knowledge of the physical processes that occur at this brittle/ductile transition can affect the decision making of governments during volcanic crises and help to reduce and/or avoid loss of life and assets. Scientific knowledge from this research can be directly applied to the geomaterial industry. In addition, natural magmatic rocks are the major raw material in the production of microfibres and continuous fibres. Compared to normal glass fibres, rock fibres have a remarkable high temperature endurance, acid and alkali resistance and anti-heat impact. Rock products can be used as substitutes for metal and timber. They are likely to become more widely used in the near future. Further use for natural magmatic rocks include crushed stone, concrete aggregate, railroad ballast, production of high quality textile fibres, floor tiles, acid-resistant equipment for heavy industrial use, rockwool, basalt pipers, basalt reinforcement bars, basalt fibre roofing felt (ruberoid), basalt laminate (used as a protective coating), heat-insulating basalt fibre materials and glass wool (fibre glass). Since Bottinga and Weill (1970) first suggested that the density of melts in two or three component systems could be used to determine partial molar volumes of oxide components in silicate liquids, several models based upon this approach have been proposed in the Earth sciences literature. Considering that knowledge the densities of 8 Zn-bearing silicate melts have been determined, in equilibrium with air, in the temperature range of 1363 to 1850 K. The compositional joins investigated [sodium disilicate (NS2)- ZnO; anorthite-diopside 1 atm eutectic (AnDi)-ZnO; and diopside-petedunnite] were chosen based on the pre-existing experimental density data set, on their petrological relevance, and in order to provide a test for significant compositionally induced variations in the structural role of ZnO. The ZnO concentrations investigated range up to 25 mol% for sodium disilicate, 20 mol% for the anorthite-diopside 1 atm eutectic, and 25 mol% for petedunnite. Molar volumes and expansivities have been derived for all melts. The molar volumes of the liquids decrease with increasing ZnO content. The partial molar volume of ZnO derived from the volumetric measurements for each binary system is the same within error. A multicomponent fit to the volumetric data for all compositions yields a value of 13.59(0.55) cm3/mol at 1500 K. I find, no volumetric evidence for compositionally induced coordination number variations for ZnO in alkali-bearing vs. alkali-free silicate melts nor for Al-free vs. Al-bearing silicate melts. The partial molar volume of ZnO determined here may be incorporated into existing multicomponent models for the prediction of silicate melt volume. High temperature density determinations on ZnO-bearing silicate melts indicate that a single value for the partial molar volume of ZnO is sufficient to describe the volumetric properties of this component in silicate melts. The presence of alkalies and Al does not appear to influence the partial molar volume of ZnO within the temperature range investigated here. There is no volumetric evidence across this temperature range presented for composition to influence the coordination polyhedron of ZnO in silicate melts. The next physical property to be studied was thermal expansivity. Ten compositions from within the anorthite-wollastonite-gehlenite (An-Wo-Geh) compatibility triangle were investigated. Due to the lack of information about the thermal expansivities at supercooled liquid temperatures this study focused on the measurement of thermal expansivity using a combination of calorimetric and dilatometric methods. The volumes at room temperature were derived from densities measured using the Archimedean buoyancy method. For each sample density was measured at 298 K using glass that had a cooling-heating history of 10-10 K min-1. The thermal expansion coefficient of the glass from 298 K to the glass transition interval was measured by a dilatometer and the heat capacity was measured using a differential scanning calorimeter from 298 to 1135 K. The thermal expansion coefficient and the heat flow were determined at a heating rate of 10 K min-1 on glasses that were previously cooled at 10 K min-1. Supercooled liquid density, molar volume and molar thermal expansivities were indirectly determined by combining differential scanning calorimetric and dilatometric measurements assuming that the kinetics of enthalpy and shear relaxation are equivalent. The data obtained on the supercooled liquids were compared to high-temperature predictions from the models of Lange and Carmichael (1987), Courtial and Dingwell (1995) and Lange (1997). The best linear fit combines the supercooled liquid data presented in this study and the high temperature data calculated using the Courtial and Dingwell (1995) model. This dilatometric/calorimetric method of determining supercooled liquid molar thermal expansivity greatly increases the temperature range accessible for thermal expansion. It represents a substantial increase in precision and understanding of the thermodynamics of calcium aluminosilicate melts. This enhanced precision demonstrates clearly the temperature independence of the melt expansions in the An-Wo-Geh system. This contrasts strongly with observations for neighboring system such as Anorthite-Diopside and raises the question of the compositional/structural origins of the temperature dependence of thermal expansivity in multicomponent silicate melts. In addition, the partial molar volumes and the thermal expansivities of 10 samples from within the An-Wo-Geh compatibility triangle have been determined. They have been incorporated into existing multicomponent models in order to predict silicate melt volume. The resulting supercooled liquid volumes near glass transition temperatures (1135 - 1200 K) and at superliquidus temperature were combined to yield temperature independent thermal expansivities over the entire temperature range. In light of results presented in this study, together with the published data, it seems that binary and ternary systems have temperature independent thermal expansivities from the supercooled liquid to the superliquidus temperature at 1 atmosphere. By combining the high temperature densitometry data (i.e., above liquidus) from the literature with volume and expansivity data obtained at Tsc, a wide temperature range is covered. There is no volumetric evidence across this temperature range for temperature independent thermal expansivities in the An-Wo-Geh compatibility triangle. Furthemore, the thermal expansivities of three multicomponent glasses and liquids have been obtained over a large temperature interval (298 - 1803 K) which involved combining the results of low and high temperature measurements. The sample compositions investigated were derived from three natural lavas; Vesuvius 1631 eruption, Etna 1992 eruption and an Oligocene-Miocene lava flow from Slapany in the Bohemian massif. The original rocks are tephri-phonolite, trachybasalt and basanite, respectively. This is the first time this calorimetric/dilatometric method has ever been applied to natural magmatic melts. The low temperature volumes were derived from measurements of the glass density of each sample after cooling at 5 K.min-1 at 298 K, followed by measurements of the glass thermal expansion coefficient from 298 K to the samples´ respective glass transition interval. Supercooled liquid volumes and molar thermal expansivities were determined by combining scanning calorimetric and dilatometric measurements, assuming that the kinetics of enthalpy and shear relaxation are equivalent (Webb, 1992). High temperature densities were measured using Pt double bob Archimedean densitometry. In addition, the oxidation state of iron was analyzed using a wet chemistry method. Small amounts of samples were taken from the liquids using a “dip” technique at regular temperature steps during high temperature densitometry. The measured high temperature densities have been compared with predicted densities across the same temperature interval calculated using the multicomponent density models of Lange and Carmichael (1987) and Lange (1997). The resulting data for liquid volumes near glass transition temperatures (993 - 1010 K) and at super-liquidus temperatures (1512 - 1803 K) are combined to yield temperature dependant thermal expansivities over the entire supercooled and stable liquid range. These results confirm the observation of Knoche et al. (1992a); Knoche et al. (1992b); Toplis and Richet (2000); Liu and Lange (2001); Gottsmann and Dingwell (2002) of the temperature dependence of thermal expansivity. The molar volumes indicate, in general, a significant negative temperature dependence of the expansivity. The thermal molar expansivity of the glasses increase from SiO2-poor (basalt-basanite composition) to relatively SiO2-rich melts (tephri-phonolite composition). The thermal molar expansivity at supercooled liquid temperatures increases in the same manner as the glasses. In contrast, the thermal molar expansivity of the superliquidus liquid decrease from SiO2-poor to relatively SiO2-rich melts. Non-linear dependency of molar volume has been observed for all studied samples above the glass transition area. Molar volume from just above the glass transition area to about 1873 K can be predicted by a non-linear logarithmic curve. This study examined the expansivities and molar volumes of relatively basic compositions. Extending such a study to more SiO2-rich, but still geologically relevant, compositions remains a challenge, because the high viscosities of such melts preclude the use of immersion techniques. This problem can be solved using a high temperature densitometry where the volume is measured on levitated sample. I would like to urge studies of this sort in the future. Results from such studies should provide important information regarding a number of geological processes, which occur in such extremely high viscous liquids. A new viscosity measurement for melts spanning a wide range of anhydrous compositions including: rhyolite, trachyte, moldavite, andesite, latite, pantellerite, basalt and basanite are discussed in the last chapters. Micropenetration and concentric cylinder viscometry measurements cover a viscosity range of 10-1 to 1012 Pas and a temperature range from 973 to 1923 K. These new measurements, combined with other published data, provide a high-quality database comprising ~800 experimental data on 44 well -characterized melt compositions. This database is used to recalibrate the model proposed by Giordano and Dingwell [Giordano, D., Dingwell, D. B., 2003a. Non-Arrhenian multicomponent melt viscosity: a model. Earth Planet. Sci. Lett. 208, 337–349] for predicting the viscosity of natural silicate melts. The recalibration shows that: a) the viscosity (η)–temperature relationship of natural silicate liquids is very well represented by the VFT equation [log η=A+B/ (T−C)] over the full range of viscosity considered here, b) the use of a constant high-T limiting value of melt viscosity (e.g., A) is fully consistent with the experimental data. There are 3 different compositional suites (peralkaline, metaluminous and peraluminous) that exhibit different patterns in viscosity, the viscosity of metaluminous liquids is well described by a simple mathematical expression involving the compositional parameter (SM) but the compositional dependence of viscosity for peralkaline and peraluminous melts is not fully controlled by SM. For these extreme compositions we refitted the model using a temperature-dependent parameter based on the excess of alkalies relative to alumina (e.g., AE/SM). The recalibrated model reproduces the entire database to within 5% relative error. On the basis of this extended database the T-variation of the viscous response of strong and fragile liquids within a wide range of compositions shows three clearly contrasting compositional suites (peralkaline, metaluminous and peraluminous). As a result, I present an extended model to calculate the viscosity of silicate melts over a wide range of temperatures and compositions. This model constitutes a significant improvement with respect to the Giordano and Dingwell (2003a) study in that: 1) The number of experimental determinations over which the model is calibrated is larger. 2) The range of investigated compositions is larger. 3) The investigated temperature range is larger. 4) The assumption is made that at infinite temperature, the viscosity of silicate melts converges to a common, but unknown value of the pre-exponential factor (A=−4.07, Equation (7.1)). In particular the compositional range involves a large number of viscosity determinations for peralkaline and peraluminous compositions in a temperature interval between 949 and 2653 K. Furthermore, it is shown that the assumption of a common value of the pre-exponential parameter A produces an equally good representation of the experimental data as that produced by each melt having its own specific A-value. This optimization also induces a strong coupling between data sets that stabilizes the range of solutions and allows the different rheological behaviour of extreme compositions (peralkaline and peraluminous vs. metaluminous) to be discriminated. It was demonstrated that, although the parameter SM (Giordano and Dingwell, 2003a) can be used to model compositional controls on the viscosities of metaluminous liquids, it does not capture the viscosity of peralkaline and peraluminous liquids. The differences in the rheological behaviour of these extreme compositions reflect important differences in the structural configuration of metaluminous, peralkaline and peraluminous melts. Subsequently, a second regression of the experimental data was performed involving a second compositional parameter (AE) that accounts for the excess of alkali oxides over the alumina. Incorporating this temperature-dependent compositional parameter (i.e., AE) into the SM-based model (Equation 7.7) appears to account for the anomalous rheological behaviour of peralkaline and peraluminous liquids. The resulting model reproduces the entire experimental database to within an average RMSE of 0.45 log units. The model presented here is recommended for the estimation of the viscosity of anhydrous multicomponent silicate melts of volcanic interest.

Como sabemos, los cerdos responden a los incrementos de energía (concepto también conocido como fase energía dependiente); sin embargo, éste, debe ir acompañado por un incremento en los niveles de aminoácidos lo que aumenta la proteína bruta (PB) de la dieta y en consecuencia el riesgo de generar problemas entéricos que perjudiquen el desempeño de los cerdos jóvenes.¿Qué podemos hacer para maximizar el crecimiento en la recría sin perjudicar la salud intestinal?En este episodio, Leandro Hackenhaar nos comparte algunas de las estrategias que se están planteando a nivel nutricional para hacer frente a los nuevos desafíos que enfrenta la industria porcina en el escenario actual.Lo que vas a aprender:- Concepto de nutrición Bypass.- ¿Qué ingredientes debemos usar en la dieta de cerdos jóvenes?- Diferentes estrategias en el mundo en función de los desafíos (uso de promotores de crecimiento, ZnO).- Rol de la fibra en la formulación de dietas para lechones.Nuestro invitado:Leandro Hackenhaar se tituló como ingeniero agrónomo en la Escuela Superior de Agricultura “Luiz de Queiroz” en Brasil. Posteriormente realizó una maestría en nutrición animal en la Universidad de São Paulo con especialización en nutrición de lechones. Cuenta con más de 30 años de experiencia trabajando en la industria porcina desempeñando distintos cargos en el área técnica y comercial. Actualmente es Líder Técnico Global en Cargill, en donde se encuentra a cargo del desarrollo de la línea de productos para lechones, Neopigg, promoviendo de esta manera la mejor rentabilidad de la industria de cerdos jóvenes.Cerdocast solo es posible gracias al apoyo de empresas innovadoras como:- PROVIMI (https://www.provimiargentina.com.ar/)- TROUW NUTRITION (https://www.trouwnutritionlatam.com/e...)- NOVUS (https://www.novusint.com/es-AR/)- BIODEVAS (https://biodevas.es/)-INNOVATIVE HEATING TECHNOLOGIES (https://innovativeheatingtech.com/)

Zinc oxide is a wonderful tool for nursery pigs. However, there have been concerns about the environmental impact ZnO can have. Several research studies have been performed to identify potential alternatives to ZnO that are more environmentally friendly. In this episode I talk with Dr. Neil Jaworksi as we discuss a trial that he performed at Trouw Nutrition that may provide a viable alternative to ZnO by targeting desirable protein and fiber digestibility rates. Tune in for 10 minutes to listen to these results! Dr. Neil Jaworski received his B.S. in animal sciences at the University of Illinois at Urbana-Champaign. He continued his graduate studies at U of I, completing his Master's degree in December 2012 and Ph. D. in 2016. His research involved experiments investigating energy metabolism, enzymes, direct-fed microbials, digestion/fermentation adaptation time, and degradation of fiber fractions along the gastrointestinal tract of the pig. Upon graduation, Dr. Jaworski moved to the Netherlands and began working as a researcher at Trouw Nutrition. Currently, his position is Global Nutritionist Database & Matrix where he works with a team to develop the Global Trouw Nutrition Database and ingredient Matrix and is the gatekeeper for nutritional concepts in mixed products, from premixes to feed.