Creation of activating molecular device including energy conversion mechanism

Impact ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 21-23
Author(s):  
Kazushi Kinbara

As technology has improved immeasurably over the past few decades, scientists have been able to do remarkable things that are directly inspired by molecules and macromolecules. Indeed, the Nobel Prize in Chemistry 2016 was awarded to Jean-Pierre Sauvage, Sir J Fraser Stoddart and Bernard L Feringa for designing and producing molecular machines. It seems almost inconceivable that such a thing could be achieved - synthetic molecules with controllable movements that are able to perform a task when energy is added. Although the science behind this achievement is extremely complex, the principle is actually quite simple. The molecular machine receives stimuli and reacts to it. These molecular machines exist biologically and are responsible for such things as DNA replication, but the Nobel Prize winners were able to create a synthetic version that converted chemical energy into motion. Of course, since then researchers around the world have started performing their own investigations to explore the potential of molecular engines and gain a full understanding of what they might facilitate in the future. Professor Kazushi Kinbara is the head of the Kinbara Group based within the School of Life Science and Technology at the Tokyo Institute of Technology in Japan. Kinbara is currently working with a team of experts from 36 research groups based in approximately 30 Japanese Universities and Institutes to design and produce synthetic molecular devices which can perform autonomous functions based on energy conversion.

TAPPI Journal ◽  
2010 ◽  
Vol 9 (4) ◽  
pp. 31-36 ◽  
Author(s):  
YULIN DENG ◽  
PHIL JONES ◽  
LESLIE MCLAIN ◽  
ART J. RAGAUSKAS

High-filler-content paper is a growing research and development opportunity in papermaking. These new products must address traditional paper product properties while providing papermakers with distinct product platform benefits. Over the past decade, a research team involving researchers from the Institute of Paper Science and Technology at Georgia Institute of Technology and from Imerys have significantly advanced the application of starch-encapsulated papermaking fillers. This review summarizes these accomplishments from initial laboratory studies to mill trials. Laboratory results have illustrated that starch-encapsulated fillers can facilitate a near-doubling of filler content over conventional levels at equal tensile and z-direction tensile (ZDT) values. Equally important is that the use of starch-encapsulated kaolin (SEK) filler has been shown to facilitate a doubling of filler addition rate without any detrimental impact on ring crush compared with control studies with filler. Pilot-plant and mill trials have shown that SEK can function as a fiber extender, reduce steam demand for drying by 10%, and increase papermaking speeds and production rates.


Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 118
Author(s):  
Jean-Laurent Pouchairet ◽  
Carole Rossi

For the past two decades, many research groups have investigated new methods for reducing the size and cost of safe and arm-fire systems, while also improving their safety and reliability, through batch processing. Simultaneously, micro- and nanotechnology advancements regarding nanothermite materials have enabled the production of a key technological building block: pyrotechnical microsystems (pyroMEMS). This building block simply consists of microscale electric initiators with a thin thermite layer as the ignition charge. This microscale to millimeter-scale addressable pyroMEMS enables the integration of intelligence into centimeter-scale pyrotechnical systems. To illustrate this technological evolution, we hereby present the development of a smart infrared (IR) electronically controllable flare consisting of three distinct components: (1) a controllable pyrotechnical ejection block comprising three independently addressable small-scale propellers, all integrated into a one-piece molded and interconnected device, (2) a terminal function block comprising a structured IR pyrotechnical loaf coupled with a microinitiation stage integrating low-energy addressable pyroMEMS, and (3) a connected, autonomous, STANAG 4187 compliant, electronic sensor arming and firing block.


Author(s):  
Joseph M. Iaquinto ◽  
Richard Tsai ◽  
Michael J. Fassbind ◽  
David R. Haynor ◽  
Bruce J. Sangeorzan ◽  
...  

The ability to accurately measure three dimensional (3D) bone kinematics is key to understanding the motion of the joints of the body, and how such motion is altered by injury, disease, and treatment. Precise measurement of such kinematics is technically challenging. Biplane fluoroscopy is ideally suited to measure bone motion. Such systems have been developed in the past for both radiographic stereo-photogrammetric analysis (RSA) [1] and the more challenging model-based analysis [2]. Research groups have studied the knee [3,4], shoulder [5] and ankle [6] motion with similar techniques. The work presented here is an initial evaluation of the performance of our system, i.e., a validation that this in-house system can detect magnitudes of motion on-par with other existing systems.


PEDIATRICS ◽  
1992 ◽  
Vol 89 (1) ◽  
pp. 172-173
Author(s):  
JOHN KATTWINKEL

To the Editor.— Dr Lucey has praised the neonatology profession for finally "getting it right" in its recent development of surfactant therapy for neonatal respiratory distress syndrome.1 Although, in some respects, I agree that we have done it better than in the past, I believe there needs to be an opposing view presented to his uniformly rosy assessment. Yes, we do have a "therapy which we know works and is safe," and which was an international joint product of research groups, industry, and the Food and Drug Administration.


2021 ◽  
Author(s):  
Venkata Seshaiah Katta ◽  
Vishnuvardhan Reddy Chappidi ◽  
Sai Santosh Kumar Raavi

Author(s):  
H. Heki ◽  
M. Nakamaru ◽  
T. Maruyama ◽  
H. Hirai ◽  
M. Aritomi

LSBWR (Long operating cycle Simplified BWR) is a modular, direct cycle, light water cooled, and small power (100–300MWe) reactor. The design considers requirements from foreign utilities as well as from Japanese. LSBWR is currently being developed by Toshiba Corporation and Tokyo Institute of Technology. Major characteristics of the LSBWR are: 1) Long operating cycle (target: over 15 years), 2) Simplified systems and building, 3) Factory fabrication in module. From the perspective of economic improvement of nuclear power plant, it is needed to shorten the plant construction period and to reduce building volume. In designing LSBWR building, a new building structure, where the hull structure of a ship is applied to floors and walls of LSBWR has been studied. Since the hull structure is manufactured at a shipyard, building module that includes plant equipment becomes possible. The application of the hull structure, which can make large modules at a shipyard, is an effective solution to the lack of laborer and economic improvement. LSBWR is a small size BWR, turbine is smaller size and lighter weight than medium or larger size plant. Then, it has been studied to install a reactor and a turbine in the same building for decreasing building volume. From the view point of standardization, whole building is supported by three dimensional seismic isolation mechanism.


Author(s):  
Minoru Takahashi ◽  
Masayuki Igashira ◽  
Toru Obara ◽  
Hiroshi Sekimoto ◽  
Kenji Kikuchi ◽  
...  

Recent studies on materials for the development of lead-bismuth (Pb-Bi)-cooled fast reactors (FR) and accelerator-driven sub-critical systems (ADS) in Japan are reported. The measurement of the neutron cross section of Bi to produce 210Po, the removal experiment of Po contamination and steel corrosion test in Pb-Bi flow were performed in Tokyo Institute of Technology. A target material corrosion test was performed in the project of Transmutation Experimental Facility for ADS in Japan Atomic Energy Research Institute (JAERI). Steel corrosion test was started in Mitsui Engineering & Shipbuilding Co., LTD (MES). The feasibility study for FR cycle performed in Japan Nuclear Cycle Institute (JNC) are described.


Zootaxa ◽  
2018 ◽  
Vol 4500 (2) ◽  
pp. 151
Author(s):  
KEKE LIU ◽  
ZEYUAN MENG ◽  
YONGHONG XIAO ◽  
XIANG XU

Dictynidae spiders were collected from Jinggang Mountain National Nature Reserve, Jiangxi Province, China in the past four years. Five new species are described and illustrated with photographs, SEMs and line drawings: Lathys adunca Liu spec. nov. (male), L. deltoidea Liu spec. nov. (female), L. fibulata Liu spec. nov. (female), L. huangyangjieensis Liu spec. nov. (male, female) and L. zhanfengi Liu spec. nov. (female). Both sexes of the species L. spiralis Zhang, Hu & Zhang, 2012 were collected from leaf litter in Jinggangshan University and the male is described for the first time. All specimens are deposited in the Animal Specimen Museum, Life Science College, at the Jinggangshan University (ASM-JGSU). 


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