Building a Cleaner World

Korupsi dalam artian luas telah menembus semua zona dan lapisan hidup sosialmasyarakat. Suburnya korupsi mencerminkan lemahnya suatu sistem pemerintahan yangmemungkinkan tindakan koruptif yang merugikan banyak orang. Ketidakadilan dalamdunia hukum memperlebar peluang untuk berkorupsi. Apakah korupsi memasukilembaga-lembaga keagamaan? Apakah mereka yang terjun dalam dunia keagamaan(departemen pemerintah dan non-pemerintah) juga terlibat dalam dunia korupsi? Tulisanini berusaha menggali Kenyataan dalam dunia keagamaan

Articulated elastic-loop roving vehicles

Prototype vehicle features exceptional obstacle-negotiating and slope-climbing capabilities plus high propulsive efficiency. Concept should interest designers of polar or ocean-bottom research vehicles. Also, its large footprint and low ground pressure will minimize ecological damage on terrain with low bearing strength, as in off-the-road application

Mean lives of some astrophysically important excited levels in carbon, nitrogen and oxygen

A number of astrophysically important mean lives of levels in carbon, nitrogen and oxygen were measured with the beam-foil technique. New values are reported and compared with earlier theoretical and experimental values. Direct references to astrophysical applications are listed

UV-Photolithography Fabrication of Poly-Ethylene Glycol Hydrogels Encapsulated with Hepatocytes

The development of biomanufacturing technologies particularly, layered manufacturing has advanced cell encapsulation processes in an effort to mimic the cellular microenvironment for invitro studies. This paper illustrates an inexpensive UV-photolithographic method for encapsulation of human hepatocytes in three dimensional structures using poly-ethylene diacrylate (PEGDA) hydrogels as candidate substrates. In order to further develop this technology for layered fabrication, we have quantified the long-term effects of the photo-initiator concentration and UV light exposure on the metabolic rates of encapsulated human hepatocytes under a 21 day study. The photoinitator toxicity was observed immediately after polymerization with no significant cytotoxicity on a long term basis. A cellular viability is examined and reported for the UV photopolymerization process. Cell phenotype maintenance was observed by measuring the amount of urea produced over a 1 week time period. This photo encapsulation process may find use in the fabrication of spatially complex 3D scaffolds for tissue engineering applications, elucidation of the 3D structure-pharmacokinetic response relationship and the fabrication of complex multi-compartment liver tissue analog devices for drug screening applications.Mechanical Engineerin