1,491 research outputs found

    Platinum(II), palladium(II), nickel(II), and gold(I) complexes of the “electrospray-friendly” thiolate ligands 4-SC₅H₄N- and 4-SC₆H₄OMe-

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    The series of platinum(II), palladium(II), and nickel(II) complexes [ML₂(dppe)] [M = Ni, Pd, Pt; L = 4-SC₅H₄N or 4-SC₆H₄OMe; dppe = Ph₂PCH₂CH₂PPh₂] containing pyridine-4-thiolate or 4-methoxybenzenethiolate ligands, together with the corresponding gold(I) complexes [AuL(PPh3)], were prepared and their electrospray ionization mass spectrometric behavior compared with that of the thiophenolate complexes [M(SPh)₂(dppe)] (M = Ni, Pd, Pt) and [Au(SPh)(PPh₃)]. While the pyridine-4-thiolate complexes yielded protonated ions of the type [M + H]+ and [M + 2H]²+ ions in the Ni, Pd, and Pt complexes, an [M + H]+ ion was only observed for the platinum derivative of 4-methoxybenzenethiolate. Other ions, which dominated the spectra of the thiophenolate complexes, were formed by thiolate loss and aggregate formation. The X-ray crystal structure of [Pt(SC₆H₄OMe-4)₂(dppe)] is also reported

    Roving vehicle motion control Final report

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    Roving vehicle motion control for unmanned planetary and lunar exploratio

    Sistem Pendukung Keputusan Penerimaan Anggota Himpunan Mahasiswa Jurusan Teknik Informatika dengan Menggunakan Metode Electre (Studi Kasus : Sekolah Tinggi Teknologi Adisutjipto YOGYAKARTA)

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    Himpunan Mahasiswa Jurusan (HMJ) is a student organization in the majors at the college level. HMJ Informatics is one of the HMJ on Sekolah Tinggi Teknologi Adisutjipto Yogyakarta. HMJ certainly has a vision and mission, therefore, to realize the vision and mission of the members is required in accordance with the criteria expected. There are several criteria for determining the decision-making division members HMJ. Criteria include interest, liveliness, confidence, psychology and CPI (Cumulative Performance Index). To resolve the issue it was made of Decision Support Systems (DSS) recruitment of HMJ division members using the method Elimination and Choice Expressing Reality (ELECTRE). The existences of these systems provide convenience to head of the HMJ to determine HMJ members. The system is built using the programming language Delphi 7 and Oracle databases. Based on calculations by the ELECTRE method obtained ranking prospective members. Taken example, 4 students applying to become a member of HMJ. Calculation shows Gilar Prakoso get ranked first by the number of assessment 4 percentage 80%, Koko Wiyono second ranked the number 2 percentage 40% assessment, Linda Putri Susanti third the number of ratings 1 percentage 20%, and Dini Larasati fourth the number of assessment - 7 the percentage of 0%. The calculations revealed that the results of the manual calculation in accordance with the results of the calculation system and can help the chairman HMJ decision in determining who is eligible to become a member

    Electrostatics of ions inside the nanopores and trans-membrane channels

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    A model of a finite cylindrical ion channel through a phospholipid membrane of width LL separating two electrolyte reservoirs is studied. Analytical solution of the Poisson equation is obtained for an arbitrary distribution of ions inside the trans-membrane pore. The solution is asymptotically exact in the limit of large ionic strength of electrolyte on the two sides of membrane. However, even for physiological concentrations of electrolyte, the electrostatic barrier sizes found using the theory are in excellent agreement with the numerical solution of the Poisson equation. The analytical solution is used to calculate the electrostatic potential energy profiles for pores containing charged protein residues. Availability of a semi-exact interionic potential should greatly facilitate the study of ionic transport through nanopores and ion channels

    Roving vehicle motion control Quarterly report, 1 Mar. - 31 May 1967

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    System and subsystem requirements for remote control of roving space vehicle motio

    Hubungan Kondisi Lingkungan Fisik Rumah Dengan Kejadian Pneumonia Pada Balita Di Wilayah Kerja Puskesmas Jatibarang Kabupaten Indramayu

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    Pneumonia still becomes a public health problems that causing pain and death on children, so that towards the older persons. In 2014 found 14.019 cases of Pneumonia that took place in Indramayu. This Pneumonia syndrome mostly happened and even takes a high rank of disease that attacks Jatibarang territory, which found 1.116 cases. The main goals of this observation is to analyze the correlation between house environment physically with the Pneumonia that involved children under five at Puskesmas (Public Health Centre) in Jatibarang Teritory, Indramayu. This observation is using Retrospective Study methode, Case – Control methode. Case group involved 38 respondents, and Control group 38 respondents. Whilst, Data Analysis is using Univariat and Bivariat analysis with Chi Square. And Risk Variable is using Odds Ratio. The result shows from 8 Independent variables analysis there are 2 variables that related to Ventilation Width (p-value= 0,004 OR=9,360) and the existences of chimney (p-value= 0,028 OR=6,429). The conclusion of this observation is there certainly any correlation between Housing Ventilation Width and Chimney towards the Pneumonia that involved the children under five. Hopefully, should be increased behavior to open ventilation which are home that the exchange of air circulation

    Scaling in Complex Systems: Analytical Theory of Charged Pores

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    In this paper we find an analytical solution of the equilibrium ion distribution for a toroidal model of a ionic channel, using the Perfect Screening Theorem (PST). The ions are charged hard spheres, and are treated using a variational Mean Spherical Approximation (VMSA) . Understanding ion channels is still a very open problem, because of the many exquisite tuning details of real life channels. It is clear that the electric field plays a major role in the channel behaviour, and for that reason there has been a lot of work on simple models that are able to provide workable theories. Recently a number of interesting papers have appeared that discuss models in which the effect of the geometry, excluded volume and non-linear behaviour is considered. We present here a 3D model of ionic channels which consists of a charged, deformable torus with a circular or elliptical cross section, which can be flat or vertical (close to a cylinder). Extensive comparisons to MC simulations were performed. The new solution opens new possibilities, such as studying flexible pores, and water phase transformations inside the pores using an approach similar to that used on flat crystal surfaces
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