3,164 research outputs found
Evaporation plant for condensing of the apple juice
No full textTehnologija uparivanja padajućim filmom često je korištena tehnologija u prehrambenoj i kemijskoj industriji jer predstavlja vrlo učinkovit način ugušćivanja raznih procesnih sirovina. U sklopu ovog rada, projektirano je postrojenje za uparivanje 10000 l/h jabučnog soka s početnog masenog udjela suhe tvari od 10 °Brix-a, na krajnji maseni udio suhe tvari od 70 °Brix-a. Postrojenje se sastoji od spremnika za medij, izmjenjivača topline, dvije spirale za predgrijavanje, četiri uparna tijela, kondenzatora supare, rashladnog tornja, spremnika rashladne vode, jedne vakuum pumpe i osam centrifugalnih pumpi koje pokreću proces.Termodinamičkim proračunom obuhvaćena su četiri stupnja uparnog postrojenja, dvije spirale za predgrijavanje i kondenzator supare. Rashladni toranj i centrifugalne pumpe odabrane su iz kataloga poznatih proizvođača opreme. Posebna pažnja posvećena je proračunu koeficijenta prijelaza topline na unutarnjoj stijenci cijevi. U svrhu tih razmatranja, provjeren je niz modela koji su dostupni u literaturi s iskustvenim i realnim podacima postrojenja u pogonu. U proračunu je korišten model koji se najbolje poklapa s iskustvenim vrijednostima. Glavni elementi postrojenja su konstrukcijski razrađeni, dok je cijelo postrojenje prikazano u 3D modelu. Opisani proizvodni proces uparivanja moguće je pratiti u izrađenom P and I dijagramu uz tehnički opis svih elemenata. Napravljena je i analiza termodinamičkog proračuna, gdje su opisani utjecaji pojedinih projektnih veličina. U zaključku ovog rada prezentirani su rezultati proračuna te je dan je kratak osvrt i komentar autora.Falling film evaporation technology is often used in food and chemical industry because it represents a very effective way of condensing various process fluids. In this project, an evaporation plant is designed for evaporating 10000 lit / h of apple juice from an initial dry solid weight content of 10 ° Brix, to the final mass fraction of solids of 70 ° Brix. Plant consists of a feed tank, a heat exchanger, two coils for preheating, four calandrias, one condenser, a cooling tower, a cooling water tank, one vacuum pump and eight centrifugal pumps. Thermodynamic calculation covers four effects of evaporating plants, two coils for preheating and vapour condenser. Cooling tower and centrifugal pumps were selected from well-known manufacturers. Special attention was paid on calculating a falling film heat transfer coefficients. A number of models that are available in the literature are tested with empirical and realistic data from plants already in operation. Calculation which best fits the empirical values has been used. The main elements of the plant are developed and designed in a 3D model programme . The manufacturing process is described and presented in a P & I diagram with a technical description of all the elements. A short analysis of thermodynamic calculations is made and influence of selected design parameters on a thermodynamic calculation is given. In conclusion of this study, the results of the calculations are presented and a brief review and comment of the author is given
Letter of concern from Boris Drasin, President of the Jersey Homesteads Industrial Cooperative Association
No full textJersey Homesteads (later renamed the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whome had emigrated from Europe. In this letter, Boris Drasin, a community leader who was the President of the Jersey Homesteads Industrial Cooperative Association, expresses his concerns to their management corporation (Consumers Wholesale Clothiers, Inc.) about how financial losses will impact the lives of Roosevelt's residents, three-fourths of whom depended on the garment factory for their livelihoods. He makes suggestions as to how the situation might be improved
Widespread Expression of BORIS/CTCFL in Normal and Cancer Cells
No full textThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Boris Smolar papers, undated, 1913-1985.
No full textThis collection contains materials pertaining to the life and career of Boris Smolar, a journalist and editor-in-chief of the Jewish Telegraphic Agency and an author of children's books.Gift of Leivy Smolar
Long-Run Development and the New Cultural Economics
No full textThis paper reviews recent economics literature on culture, with an emphasis on its relation to the field of long-run growth and development. It examines the key issues debated in the new cultural economics: causal effects of culture on economic outcomes, the origins and social costs of culture, as well as cultural transmission, persistence, and change. Some of these topics are illustrated in application to the economic analysis of envy-related culture
Making Enterprise Information Systems Resilient Against Disruptive Events: A Conceptual View
No full textEnterprise Information Systems (EIS) are designed to deal with normal variability in their inputs and data. Empowered by CONTEXT-AWARENESS, some EIS even count on sensors and/or data analytics for capturing changes outside of the system. Nevertheless, context-awareness would often fail when EIS are affected by (large-scale) disruptive events, such as disasters, virus outbreaks, or military conflicts. Hence, in the current paper, we take a step forward, by considering context-awareness for disruptive events. We combine context-awareness with risk management techniques, such as FMECA and FTA, that are useful for defining and mitigating risk events. To avoid having to define the likelihood for such very-low-probability disruptive risks, we use CONSEQUENCE-BASED RISK MANAGEMENT rather than traditional risk management. We augment this approach with the context-awareness paradigm, delivering a contribution that is two-fold: (i) We propose context-awareness-related measures and consequence-based-risk-management-related measures, to address disruptive events; (ii) We reflect this in a method featuring the application of context-awareness and risk management for designing robust and resilient EIS.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Policy Analysi
Illustrated book of fiction, Boris Vian-Froth on the Daydream
No full textBakalářká práce Ilustrovaná kniha beletrie se v praktické části zaměřuje na koncepci ilustrací a jejich následnou kresbu pro knihu Pěna dní autora Borise Viana. V teoretické části práce je detailně sledován proces vzniku od prvotních idejí až po hlavní koncepční řešení celku. Text zde dále zkoumá formu díla skrze technologický proces výroby až po konečnou realizaci knihy a dalšího příslušenství, které kniha nabízí. Krom procesu vzniku a tvorby text obsahuje také kontextové srovnání, autorčinu osobní výpověď a zhodnocení výsledného díla.OVUObhájenoBachelor´s thesis Illustrated book of fiction in it´s practical part is aimed at conception of illustrations with following realisation of drawings for the book Froth on the Daydream by Boris Vian. In theoretical part the creation process of the book is observed there closely from the first ideas up to whole piece solution. Next part of the thesis is focused on technological process of manufacturing and final realisation of the book and it´s other accessories. Also the context comparison is described there as well as personal statement of the author and evaluation of the final work
Enforcing context-awareness and privacy-by-design in the specification of information systems
No full textNetworked physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, actuators, and connectivity, allow for run-time acquisition of user data. This in turn can enable information systems which capture the “current” user state and act accordingly. The use of this data would result in context-aware applications that get fueled by user data (and environmental data) to adapt their behavior. Yet the use of data is often restricted by privacy regulations and norms; for example, the location of a person cannot be shared without given consent. In this paper we propose a design approach that allows for weaving context-awareness and privacy-by-design into the specification of information systems. This is to be done since the very early stages of the software development, while the enterprise needs are captured (and understood) and the software features are specified on that basis. In addition to taking into account context-awareness and privacy-sensitivity these two aspects will be balanced, especially if they are conflicting. The presented approach extends the “Software Derived from Business Components” (SDBC) approach. We partially demonstrate our proposed way of modeling, by means of a case example featuring land border security. Our proposed way of modeling would allow developers to smoothly reflect context and privacy features in the application design, supported by methodological guidelines that span over the enterprise modeling and software specification. Those features are captured as technology-independent societal demands and are in the end reflected in technology-specific (software) solutions. Traceability between the two is possible as well as re-use of modeling constructs.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Information and Communication Technolog
Biblical reception in rock-poetry: Boris Grebenshchikov
No full textThe article is devoted to the problem of biblical reception in Russian rock-poetry. Having analyzed Boris Grebenshikov’s interviews and texts, the author highlights his specific strategies for «alien» words interiorization. The article tells about biblical code and mechanisms of biblical text interiorization in Boris Grebenshchikov rock-poetry. The originality of individual creative manner of the rock-poet is revealed through the aspect of poetics under consideration
Projektiranje postrojenja za uparivanje jabučnog soka
No full textTehnologija uparivanja padajućim filmom često je korištena tehnologija u prehrambenoj i kemijskoj industriji jer predstavlja vrlo učinkovit način ugušćivanja raznih procesnih sirovina. U sklopu ovog rada, projektirano je postrojenje za uparivanje 10000 l/h jabučnog soka s početnog masenog udjela suhe tvari od 10 °Brix-a, na krajnji maseni udio suhe tvari od 70 °Brix-a. Postrojenje se sastoji od spremnika za medij, izmjenjivača topline, dvije spirale za predgrijavanje, četiri uparna tijela, kondenzatora supare, rashladnog tornja, spremnika rashladne vode, jedne vakuum pumpe i osam centrifugalnih pumpi koje pokreću proces.Termodinamičkim proračunom obuhvaćena su četiri stupnja uparnog postrojenja, dvije spirale za predgrijavanje i kondenzator supare. Rashladni toranj i centrifugalne pumpe odabrane su iz kataloga poznatih proizvođača opreme. Posebna pažnja posvećena je proračunu koeficijenta prijelaza topline na unutarnjoj stijenci cijevi. U svrhu tih razmatranja, provjeren je niz modela koji su dostupni u literaturi s iskustvenim i realnim podacima postrojenja u pogonu. U proračunu je korišten model koji se najbolje poklapa s iskustvenim vrijednostima. Glavni elementi postrojenja su konstrukcijski razrađeni, dok je cijelo postrojenje prikazano u 3D modelu. Opisani proizvodni proces uparivanja moguće je pratiti u izrađenom P and I dijagramu uz tehnički opis svih elemenata. \Napravljena je i analiza termodinamičkog proračuna, gdje su opisani utjecaji pojedinih projektnih veličina. U zaključku ovog rada prezentirani su rezultati proračuna te je dan je kratak osvrt i komentar autora
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