scholarly journals Candybots: CANDYBOTS: A New Generation of 3D‐Printed Sugar‐Based Transient Small‐Scale Robots (Adv. Mater. 52/2020)

2020 ◽  
Vol 32 (52) ◽  
pp. 2070388
Author(s):  
Simone Gervasoni ◽  
Anastasia Terzopoulou ◽  
Carlos Franco ◽  
Andrea Veciana ◽  
Norman Pedrini ◽  
...  
2020 ◽  
Vol 32 (52) ◽  
pp. 2005652
Author(s):  
Simone Gervasoni ◽  
Anastasia Terzopoulou ◽  
Carlos Franco ◽  
Andrea Veciana ◽  
Norman Pedrini ◽  
...  

Author(s):  
Joe D. Craig ◽  
Carol R. Purvis

A new generation of small scale (less than 20 MWe) biomass fueled, power plants are being developed based on a gas turbine (Brayton cycle) prime mover. These power plants are expected to increase the efficiency and lower the cost of generating power from fuels such as wood. The new power plants are also expected to economically utilize annual plant growth materials (such as rice hulls, cotton gin trash, nut shells, and various straws, grasses, and animal manures) that are not normally considered as fuel for power plants. This paper summarizes the new power generation concept with emphasis on the engineering challenges presented by the gas turbine component.


2021 ◽  
Author(s):  
◽  
William Rykers

<p>This research is focused towards the use of large-scale FDM 3D printing within the automotive industry, specifically to design a bespoke habitable sleeping environment attached to a Range Rover Sport. 3D printing has risen as a viable form of manufacturing in comparison with conventional methods. Allowing the designer to capitalise on digital data, enabling specific tailored designs to any vehicle model. This thesis asks the question “Can design use the properties of digital vehicle data in conjunction with large-scale FDM 3D printing to sustainably produce bespoke habitable sleeping environments for an automotive context?” Further to this, FDM 3D printing at a large-scale has so far not been explored extensively within the automotive industry.  FDM 3D printing is an emerging technology that possesses the ability to revolutionise the automotive industry, through expansion of functionality, customisation and aesthetic that is currently limited by traditional manufacturing methods. Presently, vehicle models are digitally mapped, creating an opportunity for customisation and automatic adaption through computer aided drawing (CAD). This thesis takes advantage of the digitisation of the automotive industry through 3D modelling and renders as a design and development tool.   This project explored a variety of methods to demonstrate a vision of a 3D printed habitable sleeping environment. The primary methodologies employed in this research project are Research for Design (RfD) and Research through Design (RtD). These methodologies work in conjunction to combine design theory and practice as a genuine method of inquiry. The combination of theory and design practice has ensued in the concepts being analysed, reflected and discussed according to a reflective analysis design approach. The design solution resulted in an innovative and luxury bespoke habitable sleeping space to be FDM 3D printed. Through the use of digitisation, the sleeping capsule was cohesively tailored to the unique design language of the Range Rover Sport. This thesis resulted in various final outputs including a 1:1 digital model, high quality renders, accompanied by small scale prototypes, photographs and sketch models.</p>


Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 579
Author(s):  
Marek Raclavský ◽  
Krishna P. Khakurel ◽  
Uddhab Chaulagain ◽  
Marcel Lamač ◽  
Jaroslav Nejdl

A new generation of small-scale ultrafast X-ray sources is rapidly emerging. Laser-driven betatron radiation represents an important class of such ultrafast X-ray sources. With the sources driving towards maturity, many important applications in material and biological sciences are expected to be carried out. While the last decade mainly focused on the optimization of the source properties, the development of such sources into user-oriented beamlines in order to explore the potential applications has recently taken off and is expected to grow rapidly. An important aspect in the realization of such beamlines will be the implementation of proper X-ray optics. Here, we present the design of a multi-lane X-ray mirror as a versatile focusing device covering a wide spectral range of betatron X-rays. The expected photon flux in the focal plane of such optics was also estimated through geometrical simulations.


Author(s):  
Yoseph Woldemariam ◽  
Martin Garcia ◽  
Tris Utschig ◽  
Ayse Tekes

Abstract There is still a demand for novel laboratory equipment designs that are to be utilized in undergraduate level machine dynamics, mechanical vibrations, control theory and their related labs. Since the turn-key systems preferred in most undergraduate labs are expensive and require wide lab space, 3D printed portable, small scale and cost-effective vibrational lab equipment are designed to study the fundamentals of free and forced vibrations. Four laboratory equipment designs are proposed in this study to demonstrate the fundamentals of vibration such as free vibration, forced vibration, modeling, base excitation and vibration isolation. The first device is a vibration isolator and resonator mechanism incorporating large deflecting fixed-free flexible links and composed of primary and secondary masses and a linear actuator, the second mechanism is a compliant parallel arm consisted of flexible beams, mass and a support, third mechanism is a translational vibratory mechanism comprised of slider carts, 3D printed springs, rods and bearings and the final mechanism is the model of driver seat consisted of DC motor, driver and driven wheels and a mass. Main parts of each apparatus are built by 3D printing using either PLA or PETG filament. Learning outcomes and the methods of implementing each device to the course and their associated laboratories are provided.


2018 ◽  
Author(s):  
Paul Poli ◽  
Marc Lucas ◽  
Anne O'Carroll ◽  
Marc Le Menn ◽  
Arnaud David ◽  
...  

Abstract. To support calibration and validation of satellite Sea-Surface Temperature (SST) retrievals, over 60 High Resolution SST (HRSST) drifting buoys were deployed at sea between 2012 and 2017. Their data record is reviewed here. It is confirmed that sea-state and immersion depth play an important role in understanding the data collected by such buoys and that the SST sensors need adequate insulation. In addition, calibration verification of three recovered drifters suggests that the sensor drift is low, albeit negative at around −0.01 K/year. However, the statistical significance of these results is limited, and the calibration procedure could not be exactly reproduced, introducing additional uncertainties into this drift assessment. Based on lessons learnt from these initial buoys, a new-generation drifter was designed to serve calibration of SST retrievals by European Union's Copernicus satellites. The novel drifter includes an HRSST sensor calibrated by a metrology laboratory. The sensor includes a pressure probe to monitor immersion depth in calm water, and acquires SST data at 1 Hz over a 5-minute interval every hour. This enables the derivation of mean SST as well as several percentiles of the SST distribution. The HRSST sensor is calibrated with an uncertainty better than 0.01 K. Analysis of the data collected by two prototypes deployed in the Mediterranean Sea shows that the buoys are able to capture small-scale SST variations. These variations are found to be smaller when the sea-state is well-mixed, and when the buoys are located within eddy cores. This affects the drifter SST data representativeness, which is an aspect of importance for optimal use of these data.


2019 ◽  
Vol 200 ◽  
pp. 294-309 ◽  
Author(s):  
J.R. McDonough ◽  
R. Law ◽  
D.A. Reay ◽  
V. Zivkovic

2017 ◽  
Vol 7 (4) ◽  
pp. 155
Author(s):  
Giri Susilo HJP ◽  
Hady Efendy

The business competition of the millennial generation human resource development consultant now is growing very quickly and it is difficult to predict as the progress of the world of information technology and creative ideas across generations. The world seemed to have no boundaries and time limits again. Only companies that have the ability to adapt to change will survive to stay 'survive'. Change management becomes one of the important strategies of a company to be able to improve a competitiveness. PT. Trustco Cipta Madani as a small-scale consulting firm with the business of human resources development that trying to make a change management in the face of this new generation through self-leadership strategy by involving all its employees. Every employee of PT. Trustco Cipta Madani required to have self-leadership, this is because basically every individual who has self-leadership then by itself will have self-planning, self-criticism, self-design, self-set goals and also can solve problems through self-problem. Competition consultant business world are increasingly demanding the improvement of the quality and innovation of both personnel and products continuously and sustainably effective and efficient manner.


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