There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a fixed subset of atoms; the second assigns each a fixed subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently—those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 100,000,000 atoms on several parallel supercomputers--the nCUBE 2, Intel iPSC/860 and Paragon, and Cray T3D. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and a 1840-node Intel Paragon performs up to 165 faster than a single Cray C9O processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

Fast parallel algorithms for short-range molecular dynamics

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

https://www.chem.ccu.edu.tw/~joyce/referance/gump/IL/Chem.%20Rev.%201999,%2099,%202071.pdf

Room-Temperature Ionic Liquids. Solvents for Synthesis and Catalysis

Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency. DSC research groups have been established around the worl ...

/pdf/dye-sensitized-solar-cells-50b0w2bhsr.pdf

Dye-Sensitized Solar Cells

https://lirias.kuleuven.be/bitstream/123456789/584377/3/VIIA_ID70.pdf

Recovery of rare earths from e-waste residues for production of high-performance REE-Mg alloys

Gevorderde Anorganische Chemie

La3FMo4O16 crystallizes in the triclinic crystal system with space group P1 ¯ [a = 724.86(2) pm, b = 742.26(2) pm, c = 1469.59(3) pm, α = 101.683(2)°, β = 102.118(2)°, γ = 100.279(2)°] with two formula units per unit cell. The three crystallographically independent La 3+ cations show a coordination number of nine each, with one F – and eight O 2– anions forming distorted monocapped square antiprisms. The fluoride anion is coordinated by all three lanthanum cations to form a nearly planar triangle. Besides three crystallographically independent tetrahedral [MoO4] 2– units, a fourth one with a higher coordination number (CN = 4 +1) can be found in the crystal structure, forming a dimeric entity with a for

Synthesis, Structure, and Spectroscopic Properties of the New Lanthanum(III) Fluoride Oxomolybdate(VI) La3FMo4O16.

The physicochemical properties of highly concentrated electrolytes consisting of potassium bis(trifluoromethylsulfonyl)imide in oligo(ethyleneglycol) dimethyl ethers (glymes) are reported. The solvation structures were analyzed by Raman spectroscopy, single crystal X-ray diffraction,...

Solvation structure of potassium bis(trifluoromethylsulfonyl)imide-glyme highly concentrated electrolytes and cycling on organic cathodes

A method for obtaining an intense luminescence, [said method] comprises the steps of preparing a complex comprising a lanthanide, 1 or more bis(sulfonyl)imide ligands and 1 or more bidentate or tridentate heterocyclic rings and irradiating the complex with a wavelength in the range of 25 nm above or under the maximum of the excitation spectrum of said complex measured in the range of the luminescence wavelength of the lanthanide, hereby excluding the direct excitation in the lanthanide of said complexes. Such a lanthanide organic ternary complex may be used as luminescence emitting complexes in advanced optically amplifying material for data communications and telecommunications applications. They exhibit near-IR and visible light luminescence. A lanthanide organic ternary complex according to following formula I are claimed per se, wherein: the dotted lines represent one double bond, which is dispersed over several bonds; n is any integer from 1, 2, 3 or 4; L is selected from the group of lanthanides; B is selected from neutral bidentate and tridentate heterocyclic rings, optionally substituted with one or more R ; R , R , X & Y are as defined in claim 1; and with the proviso that: at least one of R R , X or Y contains hydrogen.

Luminescence emitting lanthanide organic ternary complexes comprising a bis(sulphonyl)imide ligand & a bi- or tri- dentate heterocyclic ring (system)

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