This paper work investigated the k-connectivity of a wireless multi hop network with homogeneous random node distribution. We derived an analytical expression which will support the theoretical ...background, and provides more practical result. We have investigated the requirement to achieve more than one connected network. We can find out how many nodes are needed to cover a certain area with a k-connected network. Our results are of practical value for researchers and developers who perform simulations or design of static and mobile ad hoc networks. Our results can also be used in the implementation of real ad hoc systems. Finally, we would like to note that the results of this paper work are applicable to any kind of multi hop system. The proposed mathematical model can be analyzed for MRC diversity scheme as well as MRC Nakagami-m fading. The extension of work can be possible for MIMO (Multiple-Input and Multiple-Output) scheme.
A series of new 4-2'-(6'-nitro)benzimidazolylbenzoyl amino acids and peptides have been synthesized by coupling the 4-2'-(6'-nitro)benzimidazolylbenzoic acid with amino acid methyl esters/dipeptides ...using DCC as the coupling agent. All the synthesized compounds were found to exhibit potent anthelmintic activity along with moderate antimicrobial activity.
TIRCAM2 (TIFR Near Infrared Imaging Camera - II) is a closed cycle cooled imager that has been developed by the Infrared Astronomy Group at the Tata Institute of Fundamental Research for observations ...in the near infrared band of 1 to 3.7 microns with existing Indian telescopes. In this paper, we describe some of the technical details of TIRCAM2 and report its observing capabilities, measured performance and limiting magnitudes with the 2-m IUCAA Girawali telescope and the 1.2-m PRL Gurushikhar telescope. The main highlight is the camera's capability of observing in the nbL (3.59 microns) band enabling our primary motivation of mapping of Polycyclic Aromatic Hydrocarbon (PAH) emission at 3.3 microns.
In the title compound, C(16)H(18)N(2)O(2)S, the piperidine ring adopts a chair conformation. The central 4-thia-zolidinone ring makes dihedral angles of 12.01 (7) and 51.42 (9)°, respectively, with ...the benzene ring and the least-squares plane of the piperidine ring. An intra-molecular C-H⋯S hydrogen bond stabilizes the mol-ecular structure and generates an S(6) ring motif. In the crystal, mol-ecules are linked into a tape along the c axis by inter-molecular C-H⋯O hydrogen bonds.
In the title mol-ecule, C(24)H(21)ClN(4)OS(2), the central 1,2,4-triazole ring forms dihedral angles of 89.05 (9), 86.66 (9) and 82.70 (10)° with the chloro-substituted benzene ring, the ...methyl-sulfanyl-substituted benzene ring and the phenyl ring, respectively. In the crystal, mol-ecules are linked into sheets parallel to (100) by inter-molecular N-H⋯N and weak C-H⋯O hydrogen bonds.
In the title compound, C(9)H(9)NO(2)S, the benzene ring and the acetonitrile group are approximately coplanar, with a C-C-C-C torsion angle of 1.1 (3)° between them. In the crystal, mol-ecules are ...linked via inter-molecular C-H⋯O hydrogen bonds into layers parallel to (001).
In the title compound, C(15)H(14)Cl(2)N(2)OS, the piperidine ring adopts a chair conformation. The dihedral angle between the thia-zolidine ring and the dichloro-benzene ring is 9.30 (4)°; this near ...coplanar conformation is stabilized by the formation of an intra-molecular C-H⋯S hydrogen bond, which generates an S(6) ring. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming 001 chains. Weak π-π inter-actions centroid-centroid separation = 3.5460 (5) Å consolidate the structure.
In the title compound, C(18)H(21)N(3)O(6), a pyrimidine derivative, the dihedral angle between the benzene and pyrimidine rings is 52.26 (12)°. The carboxyl-ate unit is twisted with respect to the ...pyrimidine ring, making a dihedral angle of 12.33 (7)°. In the crystal, mol-ecules are linked by a pair of O-H⋯O hydrogen bonds, forming an inversion dimer. The dimers are stacked into columns along the b axis through weak C-H⋯O inter-actions.
Weniger als eine Minute war nötig, um die katalytische Aktivität und die Selektivität eines Elements in einer kombinatorischen Bibliothek aus ternären Rh‐Pd‐Pt‐Cu‐Legierungen zu bestimmen. Damit ...genügten zwei Stunden fast, um eine Bibliothek aus 136 Elementen zu überprüfen. Die Bibliotheken enthielten die Elemente (ca. 2–4 μg Material jeweils) in zweidimensionaler Anordnung und wurden mit Dünnschichttechniken synthetisiert. Zur Analyse wurden sie unter Einsatz von Rastertechniken, die mit Massenspektrometrie gekoppelt waren (siehe Bild), vermessen.
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