Three-dimensional printed sample load/inject valves enabling online monitoring of extracellular calcium and zinc ions in living rat brains

2014 ◽  
Vol 838 ◽  
pp. 58-63 ◽  
Author(s):  
Cheng-Kuan Su ◽  
Sheng-Chieh Hsia ◽  
Yuh-Chang Sun
Author(s):  
Judita Katinaitė ◽  
William T. A. Harrison

The solution-mediated synthesis and crystal structure of 1,1-dimethylhydrazinium tetraphoshonoatotrizincate, (C2H9N2)2[Zn3(HPO3)4], are described. The anionic [Zn3(HPO3)4]2−framework is built up from alternating ZnO4tetrahedra and HPO3pseudo-pyramids to generate a three-dimensional 4,3-net encapsulating the C2H9N2+cations. The organic cations, which are protonated at their central N atoms, occupy pores delineated by large 16-membered polyhedral rings and interact with the framework by way of N—H...O hydrogen bonds and possible C—H...O interactions. One of the zinc ions lies on a crystallographic twofold rotation axis and all the other atoms lie on general positions. The crystal studied was found to be rotationally twinned about the [001] axis in reciprocal space in a 0.585 (5):0.415 (5) ratio.


2016 ◽  
Author(s):  
Yvonne Reinwald ◽  
Pierre O. Bagnaninchi ◽  
Ying Yang ◽  
Yanny M. Baba Ismail ◽  
Alicia J. El Haj

2021 ◽  
Author(s):  
Qin Ma ◽  
Tinghao Tong ◽  
Zhi Su

Two isomorphic rare-earth borate crystals, YZnB5O10 and GdZnB5O10, show three-dimensional structures constructed from two-dimensional {[B5O10]5−}n layers with the Y or Gd, and zinc ions filled in the interlayers, and exhibit DUV cut-off edges (<190 nm).


2021 ◽  
Vol 2083 (3) ◽  
pp. 032004
Author(s):  
Kuo Chen ◽  
Ke Chen ◽  
Lei Wang

Abstract The online monitoring network of marine ranching ecological environment is one of the important development directions of marine ranching construction. Traditional marine monitoring systems are large in size, high in power consumption, and expensive. The investment in pasture construction cannot achieve a large amount of investment to form a monitoring network. There is an urgent need for a low-cost marine monitoring method that can afford a large area and high spatial density. This problem cannot be realized in traditional technology. Based on MEMS technology, this paper develops low-cost monitoring small floats that can be deployed in a large number of “swarm bees”, with high spatial and temporal resolution, and take into account environmental and biological population characteristics monitoring. Each small float is connected to a multi-node sensor chain and video monitoring node. The low-cost surface and underwater wireless transmission and wireless communication means are used for networking observation, which proposes a brand-new solution for the construction of the intelligent three-dimensional monitoring of the marine pasture environment.


1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.


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