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A control law for an Integrated Power/Attitude Control System (IPACS) for a satellite is presented in this paper. Four or more energy/momentum wheels in an arbitrary non-coplanar configuration and a set of three thrusters are used to implement the torque inputs. The energy/momentum wheels are used as attitude control actuators, as well as an energy storage(More)
BACKGROUND A successful gene delivery system needs to breakthrough several barriers to allow efficient transgenic expression. In the present study, successive targeting liposomes (STL) were constructed by integrating various targeting groups into a nanoparticle to address this issue. METHODS Polyethylenimine (PEI) 1800-triamcinolone acetonide (TA) with(More)
BACKGROUND Multidrug resistance (MDR) mediated by the overexpression of adenosine triphosphate (ATP)-binding cassette (ABC) transporters, such as P-glycoprotein (P-gp), remains one of the major obstacles to effective cancer chemotherapy. In this study, lipid/particle assemblies named LipoParticles (LNPs), consisting of a dimethyldidodecylammonium bromide(More)
With the potential uses of photothermal therapy (PTT) in cancer treatment with excellent efficacy, and the growing concerns about the nanotoxicity of hyperthermia agents such as carbon nanotubes and gold-based nanomaterials, the importance of searching for a biocompatible hyperthermia agent cannot be emphasized too much. In this work, a novel promising(More)
This paper develops a robust divided difference filtering approach based on the concept of Desensitized Kalman Filtering. The filters are formulated using a minimum variance cost function, augmented with a penalty function consisting of a weighted norm of the state sensitivities. Solutions are provided for first and second-order Divided Difference Filters.(More)
In this paper, we consider the minimum-time reorientation problem of an axi-symmetric rigid spacecraft with two independent control torques mounted perpendicular to the spacecraft symmetry axis. The objective is to reorient the spacecraft from an initial attitude, with some angular velocity, to a nal attitude with a certain angular velocity in minimum time.(More)
Theminimum-¢V, Ž xed-time, two-impulse rendezvousbetween two spacecraft orbitingalong two coplanarunidirectional circular orbits (moving-target rendezvous) is studied. To reach this goal, the minimum-¢V, Ž xed-time, two-impulse transfer problem between two Ž xed points on two circular orbits is Ž rst solved. This Ž xed-endpoint transfer is related to the(More)
The development of a drug delivery system with fluorescent biolabels is important in anti-cancer drug delivery application due to the potential for simultaneous diagnosis and treatment of diseases. Here, we reported the synthesis and multiple functionalization of mesoporous silica nanoparticle (MSN) for bioimaging and controlled drug release. After the(More)
In this paper, Battin’s method for the Lambert’s problem is extended to calculate the multiplerevolution Lambert’s solutions. It is shown that the original successive substitution method described in Battin’s method converges to one of the two N-revolution solution with N ≥ 1. If the order of the original successive substitution is reversed, then the(More)