The concept of transport capacity and its use in different geomorphic process domains

The notion of sediment-transport capacity has been engrained in geomorphological and related literature for over 50 years, although its earliest roots date back explicitly to Gilbert in fluvial geomorphology in the 1870s and implicitly to eighteenth to nineteenth century developments in engineering. Despite cross fertilization between different process domains, there seem to have been independent inventions of the idea in aeolian geomorphology by Bagnold in the 1930s and in hillslope studies by Ellison in the 1940s. Here we review the invention and development of the idea of transport capacity in the fluvial, aeolian, coastal, hillslope, débris flow, and glacial process domains. As these various developments have occurred, different definitions have been used, which makes it both a difficult concept to test, and one that may lead to poor communications between those working in different domains of geomorphology. We argue that the original relation between the power of a flow and its ability to transport sediment can be challenged for three reasons. First, as sediment becomes entrained in a flow, the nature of the flow changes and so it is unreasonable to link the capacity of the water or wind only to the ability of the fluid to move sediment. Secondly, environmental sediment transport is complicated, and the range of processes involved in most movements means that simple relationships are unlikely to hold, not least because the movement of sediment often changes the substrate, which in turn affects the flow conditions. Thirdly, the inherently stochastic nature of sediment transport means that any capacity relationships do not scale either in time or in space. Consequently, new theories of sediment transport are needed to improve understanding and prediction and to guide measurement and management of all geomorphic systems.

Development of a multivariable online monitoring system for the thermoforming process

The thermoforming industry has been relatively slow to embrace modern measurement technologies. As a result researchers have struggled to develop accurate thermoforming simulations as some of the key aspects of the process remain poorly understood. For the first time, this work reports the development of a prototype multivariable instrumentation system for use in thermoforming. The system contains sensors for plug force, plug displacement, air pressure and temperature, plug temperature, and sheet temperature. Initially, it was developed to fit the tooling on a laboratory thermoforming machine, but later its performance was validated by installing it on a similar industrial tool. Throughout its development, providing access for the various sensors and their cabling was the most challenging task. In testing, all of the sensors performed well and the data collected has given a powerful insight into the operation of the process. In particular, it has shown that both the air and plug temperatures stabilize at more than 80C during the continuous thermoforming of amorphous polyethylene terephthalate (aPET) sheet at 110C. The work also highlighted significant differences in the timing and magnitude of the cavity pressures reached in the two thermoforming machines. The prototype system has considerable potential for further development. 

Neutrophilic Cathepsin C Is Maturated by a Multistep Proteolytic Process and Secreted by Activated Cells during Inflammatory Lung Diseases

The cysteine protease cathepsin C (CatC) activates granule-associated proinflammatory serine proteases in hematopoietic precursor cells. Its early inhibition in the bone marrow is regarded as a new therapeutic strategy for treating proteolysis-driven chronic inflammatory diseases, but its complete inhibition is elusive in vivo Controlling the activity of CatC may be achieved by directly inhibiting its activity with a specific inhibitor or/and by preventing its maturation. We have investigated immunochemically and kinetically the occurrence of CatC and its proform in human hematopoietic precursor cells and in differentiated mature immune cells in lung secretions. The maturation of proCatC obeys a multistep mechanism that can be entirely managed by CatS in neutrophilic precursor cells. CatS inhibition by a cell-permeable inhibitor abrogated the release of the heavy and light chains from proCatC and blocked ∼80% of CatC activity. Under these conditions the activity of neutrophil serine proteases, however, was not abolished in precursor cell cultures. In patients with neutrophilic lung inflammation, mature CatC is found in large amounts in sputa. It is secreted by activated neutrophils as confirmed through lipopolysaccharide administration in a nonhuman primate model. CatS inhibitors currently in clinical trials are expected to decrease the activity of neutrophilic CatC without affecting those of elastase-like serine proteases.

Microwave-Assisted Process For The Preparation of Microneedle Arrays.

A microwave (MW)-assisted crosslinking process to prepare hydrogel-forming microneedle (MN) arrays was evaluated. The effects of the crosslinking process on the MN arrays characteristics was evaluated. The results suggest that MN arrays prepared using the MW assisted process had equivalent properties to those prepared conventionally, but can be produced 30 times faster.

Process Selection Using Variation and Cost Relations

Variations are inherent in all manufacturing processes and can significantly affect the quality of a final assembly, particularly in multistage assembly systems. Existing research in variation management has primarily focused on incorporating GD&T factors into variation propagation models in order to predict product quality and allocate tolerances. However, process induced variation, which has a key influence on process planning, has not been fully studied. Furthermore, the link between variation and cost has not been well established, in particular the effect that assembly process selection has on the final quality and cost of a product. To overcome these barriers, this paper proposes a novel method utilizing process capabilities to establish the relationship between variation and cost. The methodology is discussed using a real industrial case study. The benefits include determining the optimum configuration of an assembly system and facilitating rapid introduction of novel assembly techniques to achieve a competitive edge.

Banana and abaca fiber-reinforced plastic composites obtained by rotational molding process

Natural fibers can be used in rotational molding process to obtain parts with improved mechanical properties. Different approaches have been followed in order to produce formulations containing banana or abaca fiber at 5% weight, in two- and three-layer constructions. Chemically treated abaca fiber has also been studied, causing some problems in processability. Fibers used have been characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), optical microscopy, and single-fiber mechanical tests. Rotomolded parts have been tested for tensile, flexural, and impact properties, demonstrating that important increases in elastic modulus are achieved with these fibers, although impact properties are reduced. © 2013 Copyright Taylor and Francis Group, LLC.

The adaption of microwave heating to the rotational moulding process

This paper details the results from a large European Union rotomoulding research project on the adaptation and development of industrial microwave oven technology to the rotational moulding process. Following computer modelling, an industrial scale microwave oven was specifically designed, manufactured and attached to the drop-arm of a convention rotational moulding machine where extensive moulding trials were carried out. The design and development of the microwave oven and test mould, together with the savings in terms of energy efficiency and mould heating rate that were achieved are discussed.

Dreißigjähriger Process des Viktor Jansers von Schwyz gegen den Priester, Karl Dettling, von dort

C. v. Reding Alt. R. Rath

En tolk ska översätta, det är inte som att vara en lärare : Hur upplever skolledare, tolkar, lärare och elever tolkningen i specialskolan?

I denna undersökning intervjuades en skolledare, två tolkar, en lärare och två fokusgrupper med elever om sin syn på tolkning inom specialskolan. Data från de semistrukturerade intervjuerna analyserades enligt en kvalitativ innehållsanalys där liknande svar samlas i temagrupper. Tre teman valdes ut till resultat och dessa är: 1. Information om tolkning 2. Tolken som samordnare 3. Tolkens roll. Information om tolkning handlar om vilken information eleverna får och behöver ha för att tolkningen ska fungera. Tolken som samordnare utgår från Wadensjös (1998) syn på samordning som en reglering av det tolkade samtalet som tolken måste sköta. Tolkens roll undersöktes med främst Metzgers (1999) fundering kring huruvida tolken kan vara neutral. Resultatet pekar på att skolledare och lärare anser att eleverna får mycket information om tolkning, men det tycker inte eleverna själva. Tolkarna anser att mer information behövs för en förståelse för tolkprocessen. Tolkens roll, som neutral och samordnande, är tydlig för tolkar och elever, men inte när det är en lärare som tolkar. Tolkning inom specialskolan är något naturligt som sker ofta och som upplevs fungera till största delen väl när det är tolkar som utför uppdragen.

Det är alltid bäst innan förändring : En studie om motivation vid förändring, individens upplevelse & ledares påverkan

Förändringar är vanligt förekommande i organisationer och forskning visar att många förändringsinitiativ tyvärr misslyckas. Genomförandet av förändringar som fokuserar på individens motivation är lyckosamma i bemärkelsen att personalen trivs och att arbetet inte blir lidande. Studien syftar till att ta reda på hur ledare kan arbeta för att främja medarbetares motivation vid organisationsförändringar. Genom ett kvalitativt perspektiv och en deduktiv ansats har vi undersökt vad som påverkar och främjar medarbetares motivation vid organisationsförändringar. Undersökningen har genomförts på två avdelningar i ett stort företag i Gästrikland som vid tiden för insamling av data, genomgick en förändring. Studien är en fallstudie med avsikt att undersöka den specifika skiftformsförändringen som företaget genomgick. Tillvägagångssättet för insamlingen av material är en process som ämnar att, genom delaktighet och diskussion ta reda på vad som motiverar medarbetare under förändringar. Analysen av resultatet visar att individernas grundläggande behov i arbetet, till viss del inte varit uppfyllda vilket har lett till att en del personal givit uttryck för att de är omotiverade och att de känner ett motstånd mot förändringen. Det upplevda motståndet består i en rad olika känslor, bland annat; chock, oro och förvirring som uppkommer på grund av osäkerhet och brist på kontroll rörande individens arbetssituation. Känslorna hämmar motivationen och kan ge en upplevelse av att de grundläggande behoven i arbetet inte är uppfyllda, även fast de kan vara det. Studien visar att ledare kan påverka motståndet och främja medarbetares motivation under förändringar dels genom att bjuda in till delaktighet i ett så tidigt stadie som möjligt i förändringsprocesssen och dels genom att på ett tydligt sätt kommunicera och informera kring förändringens innebörd. Det gör att individen upplever kontroll över sin framtid i arbetet vilket påverkar upplevelsen av att de grundläggande behoven inte skulle vara uppfyllda och gynnar motivationen. Ledare behöver även vara lyhörda för att alla upplever förändringar olika och läsa av behov och önskemål och anpassa eventuellt stöd efter det.

Analisi e ottimizzazione del flusso di approvvigionamento in una produzione su commessa: il caso CT Pack S.r.l.

La tesi ha l'obiettivo di analizzare e ottimizzare i flussi di approvvigionamento in un'azienda che produce su commessa: CT Pack S.r.L, specializzata nella realizzazione di macchine automatiche per il packaging di biscotti, gelato e cioccolato. Per raggiungere l'obiettivo si è preso come riferimento il modello proposto dal BPR (Business Process Reengineering): sono stati analizzati i principali attori coinvolti, in particolare fornitori e magazzino, mediante l'uso di KPI definiti ad hoc. Sulla base di questi sono stati individuati due processi critici: il primo riguarda la gestione del magazzino, che presenta un'elevata quantità di codici non movimentati anche a causa del processo di gestione del materiale avanzato al termine di ciascuna commessa; il secondo riguarda il materiale a consumo, che impiega i magazzinieri per un tempo eccessivo, è caratterizzato da giacenze per il 30% non movimentate e da supermarket collocati in officina ridondanti e caratterizzati da bassi tassi di utilizzo (anche sotto il 50%). Per risolvere questi problemi ed effettuare una riprogettazione si fa affidamento agli strumenti proposti dal project management: si imposta quindi un progetto che ha l'obiettivo di ridurre nel breve periodo il valore di magazzino mediante lo smaltimento attraverso diverse vie di codici non utilizzati e agisce nel lungo periodo per evitare che le criticità si ripropongano. Mediante la riprogettazione della gestione dei resi di produzione si prevede un maggior controllo, grazie al lavoro congiunto di ufficio tecnico e ufficio acquisti. La nuova gestione del materiale a consumo ha in se alcune delle tecniche proposte dalla lean production (il kanban, per esempio) e integra il fornitore nella catena di approvvigionamento, garantendo un maggior controllo sulle quantità, un risparmio di circa 7 h/mese di lavoro per i magazzinieri e una riduzione delle giacenze del 46%.

Anaerobic digestion process for biogas and biomolecules production: microflora identification and characterization

The anaerobic process was efficient in organic matter removal. During the process, an interesting compound as quercetin was produced inside of reactor. Phylogenetic analysis showed the presence of phylotypes affiliated with gamma-Proteobacteria, Choroflexi, and Bacteroidetes. Archaea were represented by phylotypes belonging to the genus Methanosarcina and Methanosaeta.

An electrochemical process for the production of synthetic fuels at low temperatures [Resumo]

Following work exploring the low temperature electrolysis in alkaline media, using graphite consumable anodes, from which syngas was obtained1, laboratory studies have been conducted in acid media pursuing higher efficiency in the production of hydrogen and synthetic fuels. Experiments were conducted in an own designed undivided planar cell with 25 cm2 geometrical area electrodes using a 0.5 M H2SO4 solution with and without Fe(II) additions. Fe2+ oxidizes to Fe3+ at the anode surface. The redox couple Fe3+/ Fe2+ acts as an oxidation mediator not only oxidizing the bulk and detached graphite but also the surface functional groups. The practical experimental potential for graphite oxidation is within the range for the electroxidation of the Fe redox couple giving as a result a 4-fold increase in the amount of produced CO2 at near room temperature, when using 0.025 M FeSO4.

Od transfromacji do integracji: wybrane uwagi nt. “bezpośredniej” partycypacji obywateli w procesie podejmowania decyzji politycznych po 1989 r. na przykładzie państw Grupy Wyszehradzkiej

The subject of this paper concerns selected experiences of citizens from the Visegrad Group countries (Poland, the Czech Republic, Slovakia and Hungary) participating in the process of ‘direct’ (that is, exercised by means of the tools of direct democracy) decision making as regards the most important matters, ranging from those related to the process of political transformation to the decision on accession to the European Union. The present considerations dwell on the experiences of Central and East European countries.

Technology strategies in the process of student retention and efficiency of academic management

This article discusses the application of Information and Communication Technologies and strategies for best practices in order to capture and maintain faculty students' attention. It is based on a case study of ten years, using a complete information system. This system, in addition to be considered an ERP, to support the activities of academic management, also has a strong component of SRM that provides support to academic and administrative activities. It describes the extent to which the presented system facilitates the interaction and communication between members of the academic community, using the Internet, with services available on the Web complementing them with email, SMS and CTI. Through a perception, backed by empirical analysis and results of investigations, it demonstrates how this type of practice may raise the level of satisfaction of the community. In particular, it is possible to combat failure at school, avoid that students leave their course before its completion and also that they recommend them to potential students. In addition, such a strategy also allows strong economies in the management of the institution, increasing its value. As future work, we present the new phase of the project towards implementation of Business Intelligence to optimize the management process, making it proactive. The technological vision that guides new developments to a construction based on Web services and procedural languages is also presented.