A new 1D chained Ca(II) coordination polymer—namely, [CaL2(H2O)2]n (HL = 3,5-bis(4-pyridylmethoxy)benzoic acid)—was synthesized though the reaction of Ca(ClO4)2·4H2O, 3,5-bis(4-pyridylmethoxy)benzoic acid and NaOH in H2O/CH3CH2OH (v:v = 1:2) solution. Its structure was determined by elemental analysis, infrared spectrum, and single-crystal XRD. Structural analyses show that each Ca(II) ion is e...

Thanks to the promotion of new energy vehicles, industry lithium-ion batteries has ushered in its booming period. The current lithium ion is rapid development with great potential. Therefore, many researchers have turned focus on obtain better batteries. In this paper, literature review cathode materials for be carried out from following aspects, including overview batteries, their basic perfor...

Against the background of carbon neutrality, power dispatching operation mode has undergone great changes. It not only gradually realizes coordinated control source–grid–load–storage, but also strives to realize multi-level coordination transmission network, distribution network and microgrid. Disorderly charging discharging large-scale electric vehicles (EVs) will have a negative impact on agg...

basic data and outcome measures were used in the reanalysis. The short report was expanded to include more information, and it was resubmitted and accepted as a short paper. Contributors: CL initiated the research, participated in the protocol design, coordinated patient recruitment, performed transvaginal scans, provided counselling, collected and analysed data, and contributed to writing the ...

A secure index is a data structure that allows a querier with a " trapdoor " for a word x to test in O(1) time only if the index contains x; The index reveals no information about its contents without valid trapdoors, and trapdoors can only be generated with a secret key. Secure indexes are a natural extension of the problem of constructing data structures with privacy guarantees such as those ...

background: to evaluate the situation in a district demographic and health indexes are of great  importance. the aim of this article is to analyze some demographic and health indexes in chadegan district during 2004-2009. methods: this was a descriptive study and the target population was the population of chadegan district from 2004-2009. data collection was done according to registered data i...

the globalization and urban development concepts are closely linked to each other. however, all cities around the world are not affected same by globalization, each one has its spatial and reciprocal international-local action. the international changes of economy, culture, and politics have huge effects on restructuring of cities around the world. the present study as a descriptive-analytical ...

While the metallocene polymers were comprehensively studied, other metallopolymers are rarely explored. The major challenge is the lack of a synthetic platform for the preparation of metal coordinated derivatives, monomers, and polymers. Therefore, the development of a facile synthesis of new metal coordinated monomers and polymers is critically needed. A novel successfully synthesized methacry...

this paper aims at determining isfahan provincial industries orientation as well as relating the comparative advantage indexes and their changes with the province’s industrial characteristics. therefore, applying “factor analysis”, “principal components analysis” and “numerical taxonomy analysis” methods, the paper calculates the determining indexes of the province’s industrial development and ...