Sample records for cargo delivery kinetics

  1. Cargo-Delivery Platforms for Targeted Delivery of Inhibitor Cargos Against Botulism

    PubMed Central

    Wilson, Brenda A.; Ho, Mengfei

    2015-01-01

    Delivering therapeutic cargos to specific cell types in vivo poses many technical challenges. There is currently a plethora of drug leads and therapies against numerous diseases, ranging from small molecule compounds to nucleic acids to peptides to proteins with varying binding or enzymatic functions. Many of these candidate therapies have documented potential for mitigating or reversing disease symptoms, if only a means for gaining access to the intracellular target were available. Recent advances in our understanding of the biology of cellular uptake and transport processes and the mode of action of bacterial protein toxins have accelerated the development of toxin-based cargo-delivery vehicle platforms. This review provides an updated survey of the status of available platforms for targeted delivery of therapeutic cargos, outlining various strategies that have been used to deliver different types of cargo into cells. Particular emphasis is placed on the application of toxin-based approaches, examining critical issues that have hampered realization of post-intoxication antitoxins against botulism. PMID:25335885

  2. Cargo-delivery platforms for targeted delivery of inhibitor cargos against botulism.

    PubMed

    Wilson, Brenda A; Ho, Mengfei

    2014-01-01

    Delivering therapeutic cargos to specific cell types in vivo poses many technical challenges. There is currently a plethora of drug leads and therapies against numerous diseases, ranging from small molecule compounds to nucleic acids to peptides to proteins with varying binding or enzymatic functions. Many of these candidate therapies have documented potential for mitigating or reversing disease symptoms, if only a means for gaining access to the intracellular target were available. Recent advances in our understanding of the biology of cellular uptake and transport processes and the mode of action of bacterial protein toxins have accelerated the development of toxin-based cargo-delivery vehicle platforms. This review provides an updated survey of the status of available platforms for targeted delivery of therapeutic cargos, outlining various strategies that have been used to deliver different types of cargo into cells. Particular emphasis is placed on the application of toxin-based approaches, examining critical issues that have hampered realization of post-intoxication antitoxins against botulism.

  3. Delivery of Cargo to Lysosomes Using GNeosomes.

    PubMed

    Hamill, Kristina M; Wexselblatt, Ezequiel; Tong, Wenyong; Esko, Jeffrey D; Tor, Yitzhak

    2017-01-01

    Liposomes have been used to improve the intracellular delivery of a variety of cargos. Encapsulation of cargos in liposomes leads to improved plasma half-lives and minimized degradation. Here, we present a method for improving the selective delivery of liposomes to the lysosomes using a guanidinylated neomycin (GNeo) transporter. The method for synthesizing GNeo-lipids, incorporating them into liposomes, and the enhanced lysosomal delivery of encapsulated cargo are presented. GNeo-liposomes, termed GNeosomes, are capable of delivering a fluorescent dye to the lysosomes of Chinese hamster ovary cells as shown using confocal microscopy. GNeosomes can also be used to deliver therapeutic quantities of lysosomal enzymes to fibroblasts isolated from patients with a lysosomal storage disorder.

  4. A self-powered kinesin-microtubule system for smart cargo delivery

    NASA Astrophysics Data System (ADS)

    Jia, Yi; Dong, Weiguang; Feng, Xiyun; Li, Jieling; Li, Junbai

    2014-11-01

    A smart self-powered cargo delivery system that is composed of creatine phosphate kinase (CPK) microspheres, kinesins and microtubules is demonstrated. The CPK microsphere not only acts as an ATP generation and buffering system, but also as a carrier for cargo transport, thus realizing the easy loading and self-powered delivery of cargos at the same time.A smart self-powered cargo delivery system that is composed of creatine phosphate kinase (CPK) microspheres, kinesins and microtubules is demonstrated. The CPK microsphere not only acts as an ATP generation and buffering system, but also as a carrier for cargo transport, thus realizing the easy loading and self-powered delivery of cargos at the same time. Electronic supplementary information (ESI) available: Experimental details, Fig. S1-S4, and Mov. S1-S6. See DOI: 10.1039/c4nr04454a

  5. Lipid Raft-Mediated Membrane Tethering and Delivery of Hydrophobic Cargos from Liquid Crystal-Based Nanocarriers.

    PubMed

    Nag, Okhil K; Naciri, Jawad; Oh, Eunkeu; Spillmann, Christopher M; Delehanty, James B

    2016-04-20

    A main goal of bionanotechnology and nanoparticle (NP)-mediated drug delivery (NMDD) continues to be the development of novel biomaterials that can controllably modulate the activity of the NP-associated therapeutic cargo. One of the desired subcellular locations for targeted delivery in NMDD is the plasma membrane. However, the controlled delivery of hydrophobic cargos to the membrane bilayer poses significant challenges including cargo precipitation and lack of specificity. Here, we employ a liquid crystal NP (LCNP)-based delivery system for the controlled partitioning of a model dye cargo from within the NP core into the plasma membrane bilayer. During synthesis of the NPs, the water-insoluble model dye cargo, 3,3'-dioctadecyloxacarbocyanine perchlorate (DiO), was efficiently incorporated into the hydrophobic LCNP core as confirmed by multiple spectroscopic analyses. Conjugation of a PEGylated cholesterol derivative to the NP surface (DiO-LCNP-PEG-Chol) facilitated the localization of the dye-loaded NPs to lipid raft microdomains in the plasma membrane in HEK 293T/17 cell. Analysis of DiO cellular internalization kinetics revealed that when delivered as a LCNP-PEG-Chol NP, the half-life of DiO membrane residence time (30 min) was twice that of free DiO (DiO(free)) (15 min) delivered from bulk solution. Time-resolved laser scanning confocal microscopy was employed to visualize the passive efflux of DiO from the LCNP core and its insertion into the plasma membrane bilayer as confirmed by Förster resonance energy transfer (FRET) imaging. Finally, the delivery of DiO as a LCNP-PEG-Chol complex resulted in the attenuation of its cytotoxicity; the NP form of DiO exhibited ∼30-40% less toxicity compared to DiO(free). Our data demonstrate the utility of the LCNP platform as an efficient vehicle for the combined membrane-targeted delivery and physicochemical modulation of molecular cargos using lipid raft-mediated tethering.

  6. Kinesin regulation dynamics through cargo delivery, a single molecule investigation

    NASA Astrophysics Data System (ADS)

    Kovacs, Anthony; Kessler, Jonathan; Lin, Huawen; Dutcher, Susan; Wang, Yan Mei

    2015-03-01

    Kinesins are microtubule-based motors that deliver cargo to their destinations in a highly regulated manner. Although in recent years numerous regulators of cargo delivery have been identified, the regulation mechanism of kinesin through the cargo delivery and recycling process is not known. By performing single molecule fluorescence imaging measurements in Chlamydomonas flagella, which are 200 nm in diameter, 10 microns in length, and contain 9 sets of microtubule doublets, we tracked the intraflagellar transport (IFT) trains, BBSome cargo, and kinesin-2 motors through the cargo delivery process and determined the aforementioned dynamics. Upon arrival at the microtubule plus end at the flagellar tip, (1) IFT trains and BBSome cargo remain intact, dissociate together from kinesins and microtubules, and diffuse along flagellar membrane for a mean of 2.3 sec before commencing retrograde travel. (2) Kinesin motors remain bound to and diffuse along microtubules for 1.3 sec before dissociating into the flagellar lumen for recycling.

  7. Systems Analysis and Structural Design of an Unpressurized Cargo Delivery Vehicle

    NASA Technical Reports Server (NTRS)

    Wu, K. Chauncey; Cruz, Jonathan N.; Antol, Jeffrey; Sasamoto, Washito A.

    2007-01-01

    The International Space Station will require a continuous supply of replacement parts for ongoing maintenance and repair after the planned retirement of the Space Shuttle in 2010. These parts are existing line-replaceable items collectively called Orbital Replacement Units, and include heavy and oversized items such as Control Moment Gyroscopes and stowed radiator arrays originally intended for delivery aboard the Space Shuttle. Current resupply spacecraft have limited to no capability to deliver these external logistics. In support of NASA's Exploration Systems Architecture Study, a team at Langley Research Center designed an Unpressurized Cargo Delivery Vehicle to deliver bulk cargo to the Space Station. The Unpressurized Cargo Delivery Vehicle was required to deliver at least 13,200 lbs of cargo mounted on at least 18 Flight Releasable Attachment Mechanisms. The Crew Launch Vehicle design recommended in the Exploration Systems Architecture Study would be used to launch one annual resupply flight to the International Space Station. The baseline vehicle design developed here has a cargo capacity of 16,000 lbs mounted on up to 20 Flight Releasable Attachment Mechanisms. Major vehicle components are a 5.5m-diameter cargo module containing two detachable cargo pallets with the payload, a Service Module to provide propulsion and power, and an aerodynamic nose cone. To reduce cost and risk, the Service Module is identical to the one used for the Crew Exploration Vehicle design.

  8. Early Endosomal Escape of a Cyclic Cell-Penetrating Peptide Allows Effective Cytosolic Cargo Delivery

    PubMed Central

    2015-01-01

    Cyclic heptapeptide cyclo(FΦRRRRQ) (cFΦR4, where Φ is l-2-naphthylalanine) was recently found to be efficiently internalized by mammalian cells. In this study, its mechanism of internalization was investigated by perturbing various endocytic events through the introduction of pharmacologic agents and genetic mutations. The results show that cFΦR4 binds directly to membrane phospholipids, is internalized into human cancer cells through endocytosis, and escapes from early endosomes into the cytoplasm. Its cargo capacity was examined with a wide variety of molecules, including small-molecule dyes, linear and cyclic peptides of various charged states, and proteins. Depending on the nature of the cargos, they may be delivered by endocyclic (insertion of cargo into the cFΦR4 ring), exocyclic (attachment of cargo to the Gln side chain), or bicyclic approaches (fusion of cFΦR4 and cyclic cargo rings). The overall delivery efficiency (i.e., delivery of cargo into the cytoplasm and nucleus) of cFΦR4 was 4–12-fold higher than those of nonaarginine, HIV Tat-derived peptide, or penetratin. The higher delivery efficiency, coupled with superior serum stability, minimal toxicity, and synthetic accessibility, renders cFΦR4 a useful transporter for intracellular cargo delivery and a suitable system for investigating the mechanism of endosomal escape. PMID:24896852

  9. Structural Design and Analysis of Un-pressurized Cargo Delivery Vehicle

    NASA Technical Reports Server (NTRS)

    Martinovic, Zoran N.

    2007-01-01

    As part of the Exploration Systems Architecture Study, NASA has defined a family of vehicles to support lunar exploration and International Space Station (ISS) re-supply missions after the Shuttle s retirement. The Un-pressurized Cargo Delivery Vehicle (UCDV) has been envisioned to be an expendable logistics delivery vehicle that would be used to deliver external cargo to the ISS. It would be launched on the Crew Launch Vehicle and would replace the Crew Exploration Vehicle. The estimated cargo would be the weight of external logistics to the ISS. Determining the minimum weight design of the UCDV during conceptual design is the major issue addressed in this paper. This task was accomplished using a procedure for rapid weight estimation that was based on Finite Element Analysis and sizing of the vehicle by the use of commercially available codes. Three design concepts were analyzed and their respective weights were compared. The analytical structural weight was increased by a factor to account for structural elements that were not modeled. Significant reduction in weight of a composite design over metallic was achieved for similar panel concepts.

  10. A platform for actively loading cargo RNA to elucidate limiting steps in EV-mediated delivery.

    PubMed

    Hung, Michelle E; Leonard, Joshua N

    2016-01-01

    Extracellular vesicles (EVs) mediate intercellular communication through transfer of RNA and protein between cells. Thus, understanding how cargo molecules are loaded and delivered by EVs is of central importance for elucidating the biological roles of EVs and developing EV-based therapeutics. While some motifs modulating the loading of biomolecular cargo into EVs have been elucidated, the general rules governing cargo loading and delivery remain poorly understood. To investigate how general biophysical properties impact loading and delivery of RNA by EVs, we developed a platform for actively loading engineered cargo RNAs into EVs. In our system, the MS2 bacteriophage coat protein was fused to EV-associated proteins, and the cognate MS2 stem loop was engineered into cargo RNAs. Using this Targeted and Modular EV Loading (TAMEL) approach, we identified a configuration that substantially enhanced cargo RNA loading (up to 6-fold) into EVs. When applied to vesicles expressing the vesicular stomatitis virus glycoprotein (VSVG) - gesicles - we observed a 40-fold enrichment in cargo RNA loading. While active loading of mRNA-length (>1.5 kb) cargo molecules was possible, active loading was much more efficient for smaller (~0.5 kb) RNA molecules. We next leveraged the TAMEL platform to elucidate the limiting steps in EV-mediated delivery of mRNA and protein to prostate cancer cells, as a model system. Overall, most cargo was rapidly degraded in recipient cells, despite high EV-loading efficiencies and substantial EV uptake by recipient cells. While gesicles were efficiently internalized via a VSVG-mediated mechanism, most cargo molecules were rapidly degraded. Thus, in this model system, inefficient endosomal fusion or escape likely represents a limiting barrier to EV-mediated transfer. Altogether, the TAMEL platform enabled a comparative analysis elucidating a key opportunity for enhancing EV-mediated delivery to prostate cancer cells, and this technology should be of

  11. Cytosolic delivery of multi-domain cargos by the N-terminus of Pasteurella multocida toxin.

    PubMed

    Clemons, Nathan C; Bannai, Yuka; Haywood, Elizabeth E; Xu, Yiting; Buschbach, James D; Ho, Mengfei; Wilson, Brenda A

    2018-05-21

    The zoonotic pathogen Pasteurella multocida produces a 146-kDa modular toxin (PMT) that enters host cells and manipulates intracellular signaling through action on its Gα-protein targets. The N-terminus of PMT (PMT-N) mediates cellular uptake through receptor-mediated endocytosis, followed by delivery of the C-terminal catalytic domain from acidic endosomes into the cytosol. The putative native cargo of PMT consists of a 710-residue polypeptide of three distinct modular subdomains (C1-C2-C3), where C1 contains a membrane localization domain (MLD), C2 has as-of-yet undefined function, and C3 catalyzes deamidation of a specific active-site glutamine residue in Gα-protein targets. However, whether the three cargo subdomains are delivered intact or undergo further proteolytic processing during or after translocation from the late endosome is unclear. Here, we demonstrate that PMT-N mediates delivery of its native C-terminal cargo as a single polypeptide, corresponding to C1-C2-C3, including the MLD, with no evidence of cleavage between subdomains. We show that PMT-N also delivers into the cytosol non-native GFP cargo, further supporting that the receptor-binding and translocation functions reside within PMT-N. Our findings further show that PMT-N can deliver C1-C2 alone but that the presence of C1-C2 is important for cytosolic delivery of the catalytic C3 subdomain by PMT-N. In addition, we further refine the minimum C3 domain required for intracellular activity as comprising residues 1105-1278. These findings reinforce that PMT-N serves as the cytosolic delivery vehicle for C-terminal cargo and demonstrate that its native cargo is delivered intact as C1-C2-C3. Copyright © 2018 American Society for Microbiology.

  12. Protocells and their use for targeted delivery of multicomponent cargos to cancer cells

    DOEpatents

    Brinker, Jeffrey C.; Ashley, Carlee Erin; Jiang, Xingmao; Liu, Juewen; Peabody, David S.; Wharton, Walker Richard; Carnes, Eric; Chackerian, Bryce; Willman, Cheryl L.

    2016-11-01

    Various embodiments provide materials and methods for synthesizing protocells for use in targeted delivery of cargo components to cancer cells. In one embodiment, the lipid bilayer can be fused to the porous particle core to form a protocell. The lipid bilayer can be modified with targeting ligands or other ligands to achieve targeted delivery of cargo components that are loaded within the protocell to a target cell, e.g., a type of cancer. Shielding materials can be conjugated to the surface of the lipid bilayer to reduce undesired non-specific binding.

  13. Protocells and their use for targeted delivery of multicomponent cargos to cancer cells

    DOEpatents

    Brinker, C Jeffrey; Ashley, Carlee Erin; Jiang, Xingmao; Liu, Juewen; Peabody, David S; Wharton, Walker Richard; Carnes, Eric; Chackerian, Bryce; Willman, Cheryl L

    2015-03-31

    Various embodiments provide materials and methods for synthesizing protocells for use in targeted delivery of cargo components to cancer cells. In one embodiment, the lipid bilayer can be fused to the porous particle core to form a protocell. The lipid bilayer can be modified with targeting ligands or other ligands to achieve targeted delivery of cargo components that are loaded within the protocell to a target cell, e.g., a type of cancer. Shielding materials can be conjugated to the surface of the lipid bilayer to reduce undesired non-specific binding.

  14. Investigating Block-Copolymer Micelle Dynamics for Tunable Cargo Delivery

    NASA Astrophysics Data System (ADS)

    Li, Xiuli; Kidd, Bryce; Cooksey, Tyler; Robertson, Megan; Madsen, Louis

    Block-copolymer micelles (BCPMs) can carry molecular cargo in a nanoscopic package that is tunable using polymer structure in combination with cargo properties, as well as with external stimuli such as temperature or pH. For example, BCPMs can be used in targeted anticancer drug delivery due to their biocompatibility, in vivo degradability and prolonged circulation time. We are using NMR spectroscopy and diffusometry as well as SANS to investigate BCPMs. Here we study a diblock poly(ethylene oxide)-b-(caprolactone) (PEO-PCL) that forms spherical micelles at 1% (w/v) in the mixed solvent D2O/THF-d8. We quantify the populations and diffusion coefficients of coexisting micelles and free unimers over a range of temperatures and solvent compositions. We use temperature as a stimulus to enhance unimer exchange and hence trigger cargo release, in some cases at a few degrees above body temperature. We present evidence for dominance of the insertion-expulsion mechanism of unimer exchange in these systems, and we map phase diagrams versus temperature and solvent composition. This study sheds light on how intermolecular interactions fundamentally affect cargo release, unimer exchange, and overall micelle tunability.

  15. Internal Cargo Integration

    NASA Technical Reports Server (NTRS)

    Hart, Angela

    2006-01-01

    A description of internal cargo integration is presented. The topics include: 1) Typical Cargo for Launch/Disposal; 2) Cargo Delivery Requirements; 3) Cargo Return Requirements; and 4) Vehicle On-Orbit Stay Time.

  16. Infusion of imaging and therapeutic molecules into the plant virus-based carrier cowpea mosaic virus: cargo-loading and delivery.

    PubMed

    Yildiz, Ibrahim; Lee, Karin L; Chen, Kevin; Shukla, Sourabh; Steinmetz, Nicole F

    2013-12-10

    This work is focused on the development of a plant virus-based carrier system for cargo delivery, specifically 30nm-sized cowpea mosaic virus (CPMV). Whereas previous reports described the engineering of CPMV through genetic or chemical modification, we report a non-covalent infusion technique that facilitates efficient cargo loading. Infusion and retention of 130-155 fluorescent dye molecules per CPMV using DAPI (4',6-diamidino-2-phenylindole dihydrochloride), propidium iodide (3,8-diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide), and acridine orange (3,6-bis(dimethylamino)acridinium chloride), as well as 140 copies of therapeutic payload proflavine (PF, acridine-3,6-diamine hydrochloride), is reported. Loading is achieved through interaction of the cargo with the CPMV's encapsidated RNA molecules. The loading mechanism is specific; empty RNA-free eCPMV nanoparticles could not be loaded. Cargo-infused CPMV nanoparticles remain chemically active, and surface lysine residues were covalent modified with dyes leading to the development of dual-functional CPMV carrier systems. We demonstrate cargo-delivery to a panel of cancer cells (cervical, breast, and colon): CPMV nanoparticles enter cells via the surface marker vimentin, the nanoparticles target the endolysosome, where the carrier is degraded and the cargo is released allowing imaging and/or cell killing. In conclusion, we demonstrate cargo-infusion and delivery to cells; the methods discussed provide a useful means for functionalization of CPMV toward its application as drug and/or contrast agent delivery vehicle. Copyright © 2013 Elsevier B.V. All rights reserved.

  17. Infusion of imaging and therapeutic molecules into the plant virus-based carrier cowpea mosaic virus: cargo-loading and delivery

    PubMed Central

    Yildiz, Ibrahim; Lee, Karin L.; Chen, Kevin; Shukla, Sourabh; Steinmetz, Nicole F.

    2013-01-01

    This work is focused on the development of a plant virus-based carrier system for cargo delivery, specifically 30 nm-sized cowpea mosaic virus (CPMV). Whereas previous reports described the engineering of CPMV through genetic or chemical modification, we report a non-covalent infusion technique that facilitates efficient cargo loading. Infusion and retention of 130–155 fluorescent dye molecules per CPMV using DAPI (4’,6-diamidino-2-phenylindole dihydrochloride), propidium iodide (3,8-diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide), and acridine orange (3,6-bis(dimethylamino)acridinium chloride), as well as 140 copies of therapeutic payload proflavine (PF, acridine-3,6-diamine hydrochloride), is reported. Loading is achieved through interaction of the cargo with the CPMV’s encapsidated RNA molecules. The loading mechanism is specific; empty RNA-free eCPMV nanoparticles could not be loaded. Cargo-infused CPMV nanoparticles remain chemically active, and surface lysine residues were covalent modified with dyes leading to the development of dual-functional CPMV carrier systems. We demonstrate cargo-delivery to a panel of cancer cells (cervical, breast, and colon): CPMV nanoparticles enter cells via the surface marker vimentin, the nanoparticles target the endolysosome, where the carrier is degraded and the cargo released allowing imaging and/or cell killing. In conclusion, we demonstrate cargo-infusion and delivery to cells; the methods discussed provide a useful means for functionalization of CPMV toward its application as drug and/or contrast agent delivery vehicle. PMID:23665254

  18. Intracellular cargo delivery by virus capsid protein-based vehicles: From nano to micro.

    PubMed

    Gao, Ding; Lin, Xiu-Ping; Zhang, Zhi-Ping; Li, Wei; Men, Dong; Zhang, Xian-En; Cui, Zong-Qiang

    2016-02-01

    Cellular delivery is an important concern for the efficiency of medicines and sensors for disease diagnoses and therapy. However, this task is quite challenging. Self-assembly virus capsid proteins might be developed as building blocks for multifunctional cellular delivery vehicles. In this work, we found that SV40 VP1 (Simian virus 40 major capsid protein) could function as a new cell-penetrating protein. The VP1 protein could carry foreign proteins into cells in a pentameric structure. A double color structure, with red QDs (Quantum dots) encapsulated by viral capsids fused with EGFP, was created for imaging cargo delivery and release from viral capsids. The viral capsids encapsulating QDs were further used for cellular delivery of micron-sized iron oxide particles (MPIOs). MPIOs were efficiently delivered into live cells and controlled by a magnetic field. Therefore, our study built virus-based cellular delivery systems for different sizes of cargos: protein molecules, nanoparticles, and micron-sized particles. Much research is being done to investigate methods for efficient and specific cellular delivery of drugs, proteins or genetic material. In this article, the authors describe their approach in using self-assembly virus capsid proteins SV40 VP1 (Simian virus 40 major capsid protein). The cell-penetrating behavior provided excellent cellular delivery and should give a new method for biomedical applications. Copyright © 2015 Elsevier Inc. All rights reserved.

  19. Orbital ATK Cygnus Cargo Module Ready for Delivery to International Space Station

    NASA Image and Video Library

    2017-04-13

    The Orbital ATK Cygnus pressurized cargo module is packed with science experiments, supplies and hardware for delivery to the International Space Station on CRS-7. Orbital ATK's seventh commercial resupply services mission will launch atop a United Launch Alliance Atlas V rocket from Cape Canaveral Air Force Station in Florida.

  20. Extracellular Vesicles Exploit Viral Entry Routes for Cargo Delivery

    PubMed Central

    van Dongen, Helena M.; Masoumi, Niala

    2016-01-01

    SUMMARY Extracellular vesicles (EVs) have emerged as crucial mediators of intercellular communication, being involved in a wide array of key biological processes. Eukaryotic cells, and also bacteria, actively release heterogeneous subtypes of EVs into the extracellular space, where their contents reflect their (sub)cellular origin and the physiologic state of the parent cell. Within the past 20 years, presumed subtypes of EVs have been given a rather confusing diversity of names, including exosomes, microvesicles, ectosomes, microparticles, virosomes, virus-like particles, and oncosomes, and these names are variously defined by biogenesis, physical characteristics, or function. The latter category, functions, in particular the transmission of biological signals between cells in vivo and how EVs control biological processes, has garnered much interest. EVs have pathophysiological properties in cancer, neurodegenerative disorders, infectious disease, and cardiovascular disease, highlighting possibilities not only for minimally invasive diagnostic applications but also for therapeutic interventions, like macromolecular drug delivery. Yet, in order to pursue therapies involving EVs and delivering their cargo, a better grasp of EV targeting is needed. Here, we review recent progress in understanding the molecular mechanisms underpinning EV uptake by receptor-ligand interactions with recipient cells, highlighting once again the overlap of EVs and viruses. Despite their highly heterogeneous nature, EVs require common viral entry pathways, and an unanticipated specificity for cargo delivery is being revealed. We discuss the challenges ahead in delineating specific roles for EV-associated ligands and cellular receptors. PMID:26935137

  1. Bacteriophages and phage-inspired nanocarriers for targeted delivery of therapeutic cargos.

    PubMed

    Karimi, Mahdi; Mirshekari, Hamed; Moosavi Basri, Seyed Masoud; Bahrami, Sajad; Moghoofei, Mohsen; Hamblin, Michael R

    2016-11-15

    The main goal of drug delivery systems is to target therapeutic cargoes to desired cells and to ensure their efficient uptake. Recently a number of studies have focused on designing bio-inspired nanocarriers, such as bacteriophages, and synthetic carriers based on the bacteriophage structure. Bacteriophages are viruses that specifically recognize their bacterial hosts. They can replicate only inside their host cell and can act as natural gene carriers. Each type of phage has a particular shape, a different capacity for loading cargo, a specific production time, and their own mechanisms of supramolecular assembly, that have enabled them to act as tunable carriers. New phage-based technologies have led to the construction of different peptide libraries, and recognition abilities provided by novel targeting ligands. Phage hybridization with non-organic compounds introduces new properties to phages and could be a suitable strategy for construction of bio-inorganic carriers. In this review we try to cover the major phage species that have been used in drug and gene delivery systems, and the biological application of phages as novel targeting ligands and targeted therapeutics. Copyright © 2016 Elsevier B.V. All rights reserved.

  2. Microemulsion-Based Soft Bacteria-Driven Microswimmers for Active Cargo Delivery.

    PubMed

    Singh, Ajay Vikram; Hosseinidoust, Zeinab; Park, Byung-Wook; Yasa, Oncay; Sitti, Metin

    2017-10-24

    Biohybrid cell-driven microsystems offer unparalleled possibilities for realization of soft microrobots at the micron scale. Here, we introduce a bacteria-driven microswimmer that combines the active locomotion and sensing capabilities of bacteria with the desirable encapsulation and viscoelastic properties of a soft double-micelle microemulsion for active transport and delivery of cargo (e.g., imaging agents, genes, and drugs) to living cells. Quasi-monodisperse double emulsions were synthesized with an aqueous core that encapsulated the fluorescence imaging agents, as a proof-of-concept cargo in this study, and an outer oil shell that was functionalized with streptavidin for specific and stable attachment of biotin-conjugated Escherichia coli. Motile bacteria effectively propelled the soft microswimmers across a Transwell membrane, actively delivering imaging agents (i.e., dyes) encapsulated inside of the micelles to a monolayer of cultured MCF7 breast cancer and J744A.1 macrophage cells, which enabled real-time, live-cell imaging of cell organelles, namely mitochondria, endoplasmic reticulum, and Golgi body. This in vitro model demonstrates the proof-of-concept feasibility of the proposed soft microswimmers and offers promise for potential biomedical applications in active and/or targeted transport and delivery of imaging agents, drugs, stem cells, siRNA, and therapeutic genes to live tissue in in vitro disease models (e.g., organ-on-a-chip devices) and stagnant or low-flow-velocity fluidic regions of the human body.

  3. Microfluidic Droplet-Facilitated Hierarchical Assembly for Dual Cargo Loading and Synergistic Delivery.

    PubMed

    Yu, Ziyi; Zheng, Yu; Parker, Richard M; Lan, Yang; Wu, Yuchao; Coulston, Roger J; Zhang, Jing; Scherman, Oren A; Abell, Chris

    2016-04-06

    Bottom-up hierarchical assembly has emerged as an elaborate and energy-efficient strategy for the fabrication of smart materials. Herein, we present a hierarchical assembly process, whereby linear amphiphilic block copolymers are self-assembled into micelles, which in turn are accommodated at the interface of microfluidic droplets via cucurbit[8]uril-mediated host-guest chemistry to form supramolecular microcapsules. The monodisperse microcapsules can be used for simultaneous carriage of both organic (Nile Red) and aqueous-soluble (fluorescein isothiocyanate-dextran) cargo. Furthermore, the well-defined compartmentalized structure benefits from the dynamic nature of the supramolecular interaction and offers synergistic delivery of cargos with triggered release or through photocontrolled porosity. This demonstration of premeditated hierarchical assembly, where interactions from the molecular to microscale are designed, illustrates the power of this route toward accessing the next generation of functional materials and encapsulation strategies.

  4. New mechanisms for non-porative ultrasound stimulation of cargo delivery to cell cytosol with targeted perfluorocarbon nanoparticles

    NASA Astrophysics Data System (ADS)

    Soman, N. R.; Marsh, J. N.; Lanza, G. M.; Wickline, S. A.

    2008-05-01

    The cell membrane constitutes a major barrier for non-endocytotic intracellular delivery of therapeutic molecules from drug delivery vehicles. Existing approaches to breaching the cell membrane include cavitational ultrasound (with microbubbles), electroporation and cell-penetrating peptides. We report the use of diagnostic ultrasound for intracellular delivery of therapeutic bulky cargo with the use of molecularly targeted liquid perfluorocarbon (PFC) nanoparticles. To demonstrate the concept, we used a lipid with a surrogate polar head group, nanogold-DPPE, incorporated into the nanoparticle lipid monolayer. Melanoma cells were incubated with nanogold particles and this was followed by insonication with continuous wave ultrasound (2.25 MHz, 5 min, 0.6 MPa). Cells not exposed to ultrasound showed gold particles partitioned only in the outer bilayer of the cell membrane with no evidence of the intracellular transit of nanogold. However, the cells exposed to ultrasound exhibited numerous nanogold-DPPE components inside the cell that appeared polarized inside intracellular vesicles demonstrating cellular uptake and trafficking. Further, ultrasound-exposed cells manifested no incorporation of calcein or the release of lactate dehydrogenase. These observations are consistent with a mechanism that suggests that ultrasound is capable of stimulating the intracellular delivery of therapeutic molecules via non-porative mechanisms. Therefore, non-cavitational adjunctive ultrasound offers a novel paradigm in intracellular cargo delivery from PFC nanoparticles.

  5. BLOC-2 targets recycling endosomal tubules to melanosomes for cargo delivery

    PubMed Central

    Dennis, Megan K.; Mantegazza, Adriana R.; Snir, Olivia L.; Tenza, Danièle; Acosta-Ruiz, Amanda; Delevoye, Cédric; Zorger, Richard; Sitaram, Anand; de Jesus-Rojas, Wilfredo; Ravichandran, Keerthana; Rux, John; Sviderskaya, Elena V.; Bennett, Dorothy C.; Raposo, Graça; Setty, Subba Rao Gangi

    2015-01-01

    Hermansky–Pudlak syndrome (HPS) is a group of disorders characterized by the malformation of lysosome-related organelles, such as pigment cell melanosomes. Three of nine characterized HPS subtypes result from mutations in subunits of BLOC-2, a protein complex with no known molecular function. In this paper, we exploit melanocytes from mouse HPS models to place BLOC-2 within a cargo transport pathway from recycling endosomal domains to maturing melanosomes. In BLOC-2–deficient melanocytes, the melanosomal protein TYRP1 was largely depleted from pigment granules and underwent accelerated recycling from endosomes to the plasma membrane and to the Golgi. By live-cell imaging, recycling endosomal tubules of wild-type melanocytes made frequent and prolonged contacts with maturing melanosomes; in contrast, tubules from BLOC-2–deficient cells were shorter in length and made fewer, more transient contacts with melanosomes. These results support a model in which BLOC-2 functions to direct recycling endosomal tubular transport intermediates to maturing melanosomes and thereby promote cargo delivery and optimal pigmentation. PMID:26008744

  6. Monitoring Extracellular Vesicle Cargo Active Uptake by Imaging Flow Cytometry.

    PubMed

    Ofir-Birin, Yifat; Abou Karam, Paula; Rudik, Ariel; Giladi, Tal; Porat, Ziv; Regev-Rudzki, Neta

    2018-01-01

    Extracellular vesicles are essential for long distance cell-cell communication. They function as carriers of different compounds, including proteins, lipids and nucleic acids. Pathogens, like malaria parasites ( Plasmodium falciparum, Pf ), excel in employing vesicle release to mediate cell communication in diverse processes, particularly in manipulating the host response. Establishing research tools to study the interface between pathogen-derived vesicles and their host recipient cells will greatly benefit the scientific community. Here, we present an imaging flow cytometry (IFC) method for monitoring the uptake of malaria-derived vesicles by host immune cells. By staining different cargo components, we were able to directly track the cargo's internalization over time and measure the kinetics of its delivery. Impressively, we demonstrate that this method can be used to specifically monitor the translocation of a specific protein within the cellular milieu upon internalization of parasitic cargo; namely, we were able to visually observe how uptaken parasitic Pf -DNA cargo leads to translocation of transcription factor IRF3 from the cytosol to the nucleus within the recipient immune cell. Our findings demonstrate that our method can be used to study cellular dynamics upon vesicle uptake in different host-pathogen and pathogen-pathogen systems.

  7. Development of a Sono-Assembled, Bifunctional Soy Peptide Nanoparticle for Cellular Delivery of Hydrophobic Active Cargoes.

    PubMed

    Zhang, Yuanhong; Zhao, Mouming; Ning, Zhengxiang; Yu, Shujuan; Tang, Ning; Zhou, Feibai

    2018-04-25

    Soy proteins are prone to aggregate upon proteolysis, hindering their sustainable development in food processing. Here, a continuous work on the large insoluble peptide aggregates was carried out, aiming to develop a new type of soy peptide-based nanoparticle (SPN) for active cargo delivery. Sono-assembled SPN in spherical appearance and core-shell structure maintained by noncovalent interactions was successfully fabricated, exhibiting small particle size (103.95 nm) in a homogeneous distribution state (PDI = 0.18). Curcumin as a model cargo was efficiently encapsulated into SPN upon sonication, showing high water dispersity (129.6 mg/L, 10 4 higher than its water solubility) and storage stability. Additionally, the pepsin-resistant SPN contributed to the controlled release of curcumin at the intestinal phase and thus significantly improved the bioaccessibility. Encapsulated curcumin was effective in protecting glutamate-induced toxicity in PC12 cells, where the matrix SPN can simultaneously reduce lipid peroxidation and elevate antioxidant enzymes levels, innovatively demonstrating its bifunctionality during cellular delivery.

  8. Enzyme-Controlled Nanodevice for Acetylcholine-Triggered Cargo Delivery Based on Janus Au-Mesoporous Silica Nanoparticles.

    PubMed

    Llopis-Lorente, Antoni; Díez, Paula; de la Torre, Cristina; Sánchez, Alfredo; Sancenón, Félix; Aznar, Elena; Marcos, María D; Martínez-Ruíz, Paloma; Martínez-Máñez, Ramón; Villalonga, Reynaldo

    2017-03-28

    This work reports a new gated nanodevice for acetylcholine-triggered cargo delivery. We prepared and characterized Janus Au-mesoporous silica nanoparticles functionalized with acetylcholinesterase on the Au face and with supramolecular β-cyclodextrin:benzimidazole inclusion complexes as caps on the mesoporous silica face. The nanodevice is able to selectively deliver the cargo in the presence of acetylcholine via enzyme-mediated acetylcholine hydrolysis, locally lowering the pH and opening the supramolecular gate. Given the key role played by ACh and its relation with Parkinson's disease and other nervous system diseases, we believe that these findings could help design new therapeutic strategies. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  9. 33 CFR 105.265 - Security measures for handling cargo.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., containers, or other cargo transport units entering the facility match the delivery note or equivalent cargo..., containers or other cargo transport units, and cargo storage areas within the facility for evidence of... cargo. 105.265 Section 105.265 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  10. 33 CFR 105.265 - Security measures for handling cargo.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., containers, or other cargo transport units entering the facility match the delivery note or equivalent cargo..., containers or other cargo transport units, and cargo storage areas within the facility for evidence of... cargo. 105.265 Section 105.265 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  11. 33 CFR 105.265 - Security measures for handling cargo.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., containers, or other cargo transport units entering the facility match the delivery note or equivalent cargo..., containers or other cargo transport units, and cargo storage areas within the facility for evidence of... cargo. 105.265 Section 105.265 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  12. 33 CFR 105.265 - Security measures for handling cargo.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ..., containers, or other cargo transport units entering the facility match the delivery note or equivalent cargo..., containers or other cargo transport units, and cargo storage areas within the facility for evidence of... cargo. 105.265 Section 105.265 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  13. 33 CFR 105.265 - Security measures for handling cargo.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ..., containers, or other cargo transport units entering the facility match the delivery note or equivalent cargo..., containers or other cargo transport units, and cargo storage areas within the facility for evidence of... cargo. 105.265 Section 105.265 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  14. Theranostic applications of carbon nanomaterials in cancer: Focus on imaging and cargo delivery.

    PubMed

    Chen, Daiqin; Dougherty, Casey A; Zhu, Kaicheng; Hong, Hao

    2015-07-28

    Carbon based nanomaterials have attracted significant attention over the past decades due to their unique physical properties, versatile functionalization chemistry, and biological compatibility. In this review, we will summarize the current state-of-the-art applications of carbon nanomaterials in cancer imaging and drug delivery/therapy. The carbon nanomaterials will be categorized into fullerenes, nanotubes, nanohorns, nanodiamonds, nanodots and graphene derivatives based on their morphologies. The chemical conjugation/functionalization strategies of each category will be introduced before focusing on their applications in cancer imaging (fluorescence/bioluminescence, magnetic resonance (MR), positron emission tomography (PET), single-photon emission computed tomography (SPECT), photoacoustic, Raman imaging, etc.) and cargo (chemo/gene/therapy) delivery. The advantages and limitations of each category and the potential clinical utilization of these carbon nanomaterials will be discussed. Multifunctional carbon nanoplatforms have the potential to serve as optimal candidates for image-guided delivery vectors for cancer. Copyright © 2015 Elsevier B.V. All rights reserved.

  15. Early and Selective Impairments in Axonal Transport Kinetics of Synaptic Cargoes Induced by Soluble Amyloid β-Protein Oligomers

    PubMed Central

    Tang, Yong; Scott, David A.; Das, Utpal; Edland, Steven D.; Radomski, Kryslaine; Koo, Edward H.; Roy, Subhojit

    2013-01-01

    The downstream targets of amyloid β (Aβ)-oligomers remain elusive. One hypothesis is that Aβ-oligomers interrupt axonal transport. Although previous studies have demonstrated Aβ-induced transport blockade, early effects of low-n soluble Aβ-oligomers on axonal transport remain unclear. Furthermore, the cargo selectivity for such deficits (if any) or the specific effects of Aβ on the motility kinetics of transported cargoes are also unknown. Toward this, we visualized axonal transport of vesicles in cultured hippocampal neurons treated with picomolar (pm) levels of cell-derived soluble Aβ-oligomers. We examined select cargoes thought to move as distinct organelles and established imaging parameters that allow organelle tracking with consistency and high fidelity – analyzing all data in a blinded fashion. Aβ-oligomers induced early and selective diminutions in velocities of synaptic cargoes but had no effect on mitochondrial motility, contrary to previous reports. These changes were N-methyl d-aspartate receptor/glycogen synthase kinase-3β dependent and reversible upon washout of the oligomers. Cluster-mode analyses reveal selective attenuations in faster-moving synaptic vesicles, suggesting possible decreases in cargo/motor associations, and biochemical experiments implicate tau phosphorylation in the process. Collectively, the data provide a biological basis for Aβ-induced axonal transport deficits. PMID:22309053

  16. Factors modulating the delivery and effect of enzymatic cargo conjugated with antibodies targeted to the pulmonary endothelium

    PubMed Central

    Shuvaev, Vladimir V.; Christofidou-Solomidou, Melpo; Scherpereel, Arnaud; Simone, Eric; Arguiri, Evguenia; Tliba, Samira; Pick, Jeremy; Kennel, Stephen; Albelda, Steven M.; Muzykantov, Vladimir R.

    2007-01-01

    Vascular drug targeting may improve therapies, yet a thorough understanding of the factors that regulate effects of drugs directed to the endothelium is needed to translate this approach into the clinical domain. To define factors modulating the efficacy and effects of endothelial targeting, we used a model enzyme (glucose oxidase, GOX) coupled with monoclonal antibodies (anti-TM34 or anti-TM201) to distinct epitopes of thrombomodulin, a surface determinant enriched in the pulmonary endothelium. GOX delivery results in conversion of glucose and oxygen into H2O2 leading to lung damage, a clear physiologic endpoint. Results of in vivo studies in mice showed that the efficiency of cargo delivery and its effect are influenced by a number of factors including: 1) The level of pulmonary uptake of the targeting antibody (anti-TM201 was more efficient than anti-TM34); 2) The amount of an active drug delivered to the target; 3) The amount of target antigen on the endothelium (animals with suppressed TM levels showed less targeting); and, 4) The substrate availability for the enzyme cargo in the target tissue (hyperoxia augmented GOX-induced injury). Therefore, both activity of the conjugates and biological factors control targeting and effects of enzymatic cargo. Understanding the nature of such “modulating biological factors” will hopefully allow optimization and ultimately applications of drug targeting for “individualized” pharmacotherapy. PMID:17270308

  17. Collective navigation of cargo-carrying swarms

    PubMed Central

    Shklarsh, Adi; Finkelshtein, Alin; Ariel, Gil; Kalisman, Oren; Ingham, Colin; Ben-Jacob, Eshel

    2012-01-01

    Much effort has been devoted to the study of swarming and collective navigation of micro-organisms, insects, fish, birds and other organisms, as well as multi-agent simulations and to the study of real robots. It is well known that insect swarms can carry cargo. The studies here are motivated by a less well-known phenomenon: cargo transport by bacteria swarms. We begin with a concise review of how bacteria swarms carry natural, micrometre-scale objects larger than the bacteria (e.g. fungal spores) as well as man-made beads and capsules (for drug delivery). A comparison of the trajectories of virtual beads in simulations (using different putative coupling between the virtual beads and the bacteria) with the observed trajectories of transported fungal spores implies the existence of adaptable coupling. Motivated by these observations, we devised new, multi-agent-based studies of cargo transport by agent swarms. As a first step, we extended previous modelling of collective navigation of simple bacteria-inspired agents in complex terrain, using three putative models of agent–cargo coupling. We found that cargo-carrying swarms can navigate efficiently in a complex landscape. We further investigated how the stability, elasticity and other features of agent–cargo bonds influence the collective motion and the transport of the cargo, and found sharp phase shifts and dual successful strategies for cargo delivery. Further understanding of such mechanisms may provide valuable clues to understand cargo-transport by smart swarms of other organisms as well as by man-made swarming robots. PMID:24312731

  18. Kinetics of lipid-nanoparticle-mediated intracellular mRNA delivery and function

    NASA Astrophysics Data System (ADS)

    Zhdanov, Vladimir P.

    2017-10-01

    mRNA delivery into cells forms the basis for one of the new and promising ways to treat various diseases. Among suitable carriers, lipid nanoparticles (LNPs) with a size of about 100 nm are now often employed. Despite high current interest in this area, the understanding of the basic details of LNP-mediated mRNA delivery and function is limited. To clarify the kinetics of mRNA release from LNPs, the author uses three generic models implying (i) exponential, (ii) diffusion-controlled, and (iii) detachment-controlled kinetic regimes, respectively. Despite the distinct differences in these kinetics, the associated transient kinetics of mRNA translation to the corresponding protein and its degradation are shown to be not too sensitive to the details of the mRNA delivery by LNPs (or other nanocarriers). In addition, the author illustrates how this protein may temporarily influence the expression of one gene or a few equivalent genes. The analysis includes positive or negative regulation of the gene transcription via the attachment of the protein without or with positive or negative feedback in the gene expression. Stable, bistable, and oscillatory schemes have been scrutinized in this context.

  19. 19 CFR 4.32 - Vessels in distress; landing of cargo.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Vessels in distress; landing of cargo. 4.32...; DEPARTMENT OF THE TREASURY VESSELS IN FOREIGN AND DOMESTIC TRADES Landing and Delivery of Cargo § 4.32 Vessels in distress; landing of cargo. (a) When a vessel from a foreign port arrives in distress at a port...

  20. Integrated nanotechnology platform for tumor-targeted multimodal imaging and therapeutic cargo release

    PubMed Central

    Hosoya, Hitomi; Dobroff, Andrey S.; Driessen, Wouter H. P.; Cristini, Vittorio; Brinker, Lina M.; Staquicini, Fernanda I.; Cardó-Vila, Marina; D’Angelo, Sara; Ferrara, Fortunato; Proneth, Bettina; Lin, Yu-Shen; Dunphy, Darren R.; Dogra, Prashant; Melancon, Marites P.; Stafford, R. Jason; Miyazono, Kohei; Gelovani, Juri G.; Kataoka, Kazunori; Brinker, C. Jeffrey; Sidman, Richard L.; Arap, Wadih; Pasqualini, Renata

    2016-01-01

    A major challenge of targeted molecular imaging and drug delivery in cancer is establishing a functional combination of ligand-directed cargo with a triggered release system. Here we develop a hydrogel-based nanotechnology platform that integrates tumor targeting, photon-to-heat conversion, and triggered drug delivery within a single nanostructure to enable multimodal imaging and controlled release of therapeutic cargo. In proof-of-concept experiments, we show a broad range of ligand peptide-based applications with phage particles, heat-sensitive liposomes, or mesoporous silica nanoparticles that self-assemble into a hydrogel for tumor-targeted drug delivery. Because nanoparticles pack densely within the nanocarrier, their surface plasmon resonance shifts to near-infrared, thereby enabling a laser-mediated photothermal mechanism of cargo release. We demonstrate both noninvasive imaging and targeted drug delivery in preclinical mouse models of breast and prostate cancer. Finally, we applied mathematical modeling to predict and confirm tumor targeting and drug delivery. These results are meaningful steps toward the design and initial translation of an enabling nanotechnology platform with potential for broad clinical applications. PMID:26839407

  1. Integrated nanotechnology platform for tumor-targeted multimodal imaging and therapeutic cargo release.

    PubMed

    Hosoya, Hitomi; Dobroff, Andrey S; Driessen, Wouter H P; Cristini, Vittorio; Brinker, Lina M; Staquicini, Fernanda I; Cardó-Vila, Marina; D'Angelo, Sara; Ferrara, Fortunato; Proneth, Bettina; Lin, Yu-Shen; Dunphy, Darren R; Dogra, Prashant; Melancon, Marites P; Stafford, R Jason; Miyazono, Kohei; Gelovani, Juri G; Kataoka, Kazunori; Brinker, C Jeffrey; Sidman, Richard L; Arap, Wadih; Pasqualini, Renata

    2016-02-16

    A major challenge of targeted molecular imaging and drug delivery in cancer is establishing a functional combination of ligand-directed cargo with a triggered release system. Here we develop a hydrogel-based nanotechnology platform that integrates tumor targeting, photon-to-heat conversion, and triggered drug delivery within a single nanostructure to enable multimodal imaging and controlled release of therapeutic cargo. In proof-of-concept experiments, we show a broad range of ligand peptide-based applications with phage particles, heat-sensitive liposomes, or mesoporous silica nanoparticles that self-assemble into a hydrogel for tumor-targeted drug delivery. Because nanoparticles pack densely within the nanocarrier, their surface plasmon resonance shifts to near-infrared, thereby enabling a laser-mediated photothermal mechanism of cargo release. We demonstrate both noninvasive imaging and targeted drug delivery in preclinical mouse models of breast and prostate cancer. Finally, we applied mathematical modeling to predict and confirm tumor targeting and drug delivery. These results are meaningful steps toward the design and initial translation of an enabling nanotechnology platform with potential for broad clinical applications.

  2. Kinetic analysis of downward step posture according to the foothold heights and visual information blockage in cargo truck

    PubMed Central

    Hyun, Seung-Hyun; Ryew, Che-Cheong

    2018-01-01

    The study was undertaken to compare and analyze kinetic variables during downward foot-on according to the foothold heights under interrupted-visual information on 25-t cargo truck. Skilled adult male drivers (n=10) engaged in cargo truck driving over 1 year participated in the experiment. The results obtained from cinematographic and ground reaction force data during downward foot-on as follows; First, leg stiffness, peak vertical force (PVF) and loading rate showed significant difference as an increase of foothold heights, that is, interrupted-visual information showed greater impulse force than as was not. Second, variables of center of pressure (COP) with interrupted-visual information did not showed difference, but anterior-posterior COP and COP area showed an increasing tendency as an increase of foothold heights. Third, dynamic posture stability index (overall, medial-lateral, anterior-posterior, and vertical) showed significant difference as an increase of foothold height, that is, interrupted-visual information showed lower index than as was not. Therefore it will be possible to control successfully the leg stiffness, loading rate, and PVF when preparing an estimate for air phase time and impulse force through habitual cognition and confirmation at landing during downward foot-on from cargo truck. Identifying these potential differences may enable clinicians to assess type of injury and design exercise rehabilitation protocols specific. PMID:29740569

  3. Nanoparticle bioconjugate for controlled cellular delivery of doxorubicin

    NASA Astrophysics Data System (ADS)

    Sangtani, Ajmeeta; Petryayeva, Eleonora; Wu, Miao; Susumu, Kimihiro; Oh, Eunkeu; Huston, Alan L.; Lasarte-Aragones, Guillermo; Medintz, Igor L.; Algar, W. Russ; Delehanty, James B.

    2018-02-01

    Nanoparticle (NP)-mediated drug delivery offers the potential to overcome limitations of systemic delivery, including the ability to specifically target cargo and control release of NP-associated drug cargo. Doxorubicin (DOX) is a widely used FDA-approved cancer therapeutic; however, multiple side effects limit its utility. Thus, there is wide interest in modulating toxicity after cell delivery. Our goal here was to realize a NP-based DOX-delivery system that can modulate drug toxicity by controlling the release kinetics of DOX from the surface of a hard NP carrier. To achieve this, we employed a quantum dot (QD) as a central scaffold which DOX was appended via three different peptidyl linkages (ester, disulfide, hydrazone) that are cleavable in response to various intracellular conditions. Attachment of a cell penetrating peptide (CPP) containing a positively charged polyarginine sequence facilitates endocytosis of the ensemble. Polyhistidine-driven metal affinity coordination was used to self-assemble both peptides to the QD surface, allowing for fine control over both the ratio of peptides attached to the QD as well as DOX dose delivered to cells. Microplate-based Förster resonance energy transfer assays confirmed the successful ratiometric assembly of the conjugates and functionality of the linkages. Cell delivery experiments and cytotoxicity assays were performed to compare the various cleavable linkages to a control peptide where DOX is attached through an amide bond. The role played by various attachment chemistries used in QD-peptide-drug assemblies and their implications for the rationale in design of NPbased constructs for drug delivery is described here.

  4. pHLIP-FIRE, a Cell Insertion-Triggered Fluorescent Probe for Imaging Tumors Demonstrates Targeted Cargo Delivery In Vivo

    PubMed Central

    2015-01-01

    We have developed an improved tool for imaging acidic tumors by reporting the insertion of a transmembrane helix: the pHLIP-Fluorescence Insertion REporter (pHLIP-FIRE). In acidic tissues, such as tumors, peptides in the pHLIP family insert as α-helices across cell membranes. The cell-inserting end of the pHLIP-FIRE peptide has a fluorophore–fluorophore or fluorophore–quencher pair. A pair member is released by disulfide cleavage after insertion into the reducing environment inside a cell, resulting in dequenching of the probe. Thus, the fluorescence of the pHLIP-FIRE probe is enhanced upon cell-insertion in the targeted tissues but is suppressed elsewhere due to quenching. Targeting studies in mice bearing breast tumors show strong signaling by pHLIP-FIRE, with a contrast index of ∼17, demonstrating (i) direct imaging of pHLIP insertion and (ii) cargo translocation in vivo. Imaging and targeted cargo delivery should each have clinical applications. PMID:25184440

  5. Effect of thiol pendant conjugates on plasmid DNA binding, release, and stability of polymeric delivery vectors.

    PubMed

    Bacalocostantis, Irene; Mane, Viraj P; Kang, Michael S; Goodley, Addison S; Muro, Silvia; Kofinas, Peter

    2012-05-14

    Polymers have attracted much attention as potential gene delivery vectors due to their chemical and structural versatility. However, several challenges associated with polymeric carriers, including low transfection efficiencies, insufficient cargo release, and high cytotoxicity levels have prevented clinical implementation. Strong electrostatic interactions between polymeric carriers and DNA cargo can prohibit complete cargo release within the cell. As a result, cargo DNA never reaches the cell's nucleus where gene expression takes place. In addition, highly charged cationic polymers have been correlated with high cytotoxicity levels, making them unsuitable carriers in vivo. Using poly(allylamine) (PAA) as a model, we investigated how pH-sensitive disulfide cross-linked polymer networks can improve the delivery potential of cationic polymer carriers. To accomplish this, we conjugated thiol-terminated pendant chains onto the primary amines of PAA using 2-iminothiolane, developing three new polymer vectors with 5, 13, or 20% thiol modification. Unmodified PAA and thiol-conjugated polymers were tested for their ability to bind and release plasmid DNA, their capacity to protect genetic cargo from enzymatic degradation, and their potential for endolysosomal escape. Our results demonstrate that polymer-plasmid complexes (polyplexes) formed by the 13% thiolated polymer demonstrate the greatest delivery potential. At high N/P ratios, all thiolated polymers (but not unmodified counterparts) were able to resist decomplexation in the presence of heparin, a negatively charged polysaccharide used to mimic in vivo polyplex-protein interactions. Further, all thiolated polymers exhibited higher buffering capacities than unmodified PAA and, therefore, have a greater potential for endolysosomal escape. However, 5 and 20% thiolated polymers exhibited poor DNA binding-release kinetics, making them unsuitable carriers for gene delivery. The 13% thiolated polymers, on the other hand

  6. Integrated nanotechnology platform for tumor-targeted multimodal imaging and therapeutic cargo release

    DOE PAGES

    Hosoya, Hitomi; Dobroff, Andrey S.; Driessen, Wouter H. P.; ...

    2016-02-02

    A major challenge of targeted molecular imaging and drug delivery in cancer is establishing a functional combination of ligand-directed cargo with a triggered release system. Here we develop a hydrogel-based nanotechnology platform that integrates tumor targeting, photon-to-heat conversion, and triggered drug delivery within a single nanostructure to enable multimodal imaging and controlled release of therapeutic cargo. In proof-of-concept experiments, we show a broad range of ligand peptide-based applications with phage particles, heat-sensitive liposomes, or mesoporous silica nanoparticles that self-assemble into a hydrogel for tumor-targeted drug delivery. Because nanoparticles pack densely within the nanocarrier, their surface plasmon resonance shifts to near-infrared,more » thereby enabling a laser-mediated photothermal mechanism of cargo release. We demonstrate both noninvasive imaging and targeted drug delivery in preclinical mouse models of breast and prostate cancer. Finally, we applied mathematical modeling to predict and confirm tumor targeting and drug delivery. We conclude that these results are meaningful steps toward the design and initial translation of an enabling nanotechnology platform with potential for broad clinical applications.« less

  7. Integrated nanotechnology platform for tumor-targeted multimodal imaging and therapeutic cargo release

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hosoya, Hitomi; Dobroff, Andrey S.; Driessen, Wouter H. P.

    A major challenge of targeted molecular imaging and drug delivery in cancer is establishing a functional combination of ligand-directed cargo with a triggered release system. Here we develop a hydrogel-based nanotechnology platform that integrates tumor targeting, photon-to-heat conversion, and triggered drug delivery within a single nanostructure to enable multimodal imaging and controlled release of therapeutic cargo. In proof-of-concept experiments, we show a broad range of ligand peptide-based applications with phage particles, heat-sensitive liposomes, or mesoporous silica nanoparticles that self-assemble into a hydrogel for tumor-targeted drug delivery. Because nanoparticles pack densely within the nanocarrier, their surface plasmon resonance shifts to near-infrared,more » thereby enabling a laser-mediated photothermal mechanism of cargo release. We demonstrate both noninvasive imaging and targeted drug delivery in preclinical mouse models of breast and prostate cancer. Finally, we applied mathematical modeling to predict and confirm tumor targeting and drug delivery. We conclude that these results are meaningful steps toward the design and initial translation of an enabling nanotechnology platform with potential for broad clinical applications.« less

  8. Lipopolysaccharide structure impacts the entry kinetics of bacterial outer membrane vesicles into host cells

    PubMed Central

    Hadis, Mohammed; Alderwick, Luke

    2017-01-01

    Outer membrane vesicles are nano-sized microvesicles shed from the outer membrane of Gram-negative bacteria and play important roles in immune priming and disease pathogenesis. However, our current mechanistic understanding of vesicle-host cell interactions is limited by a lack of methods to study the rapid kinetics of vesicle entry and cargo delivery to host cells. Here, we describe a highly sensitive method to study the kinetics of vesicle entry into host cells in real-time using a genetically encoded, vesicle-targeted probe. We found that the route of vesicular uptake, and thus entry kinetics and efficiency, are shaped by bacterial cell wall composition. The presence of lipopolysaccharide O antigen enables vesicles to bypass clathrin-mediated endocytosis, which enhances both their entry rate and efficiency into host cells. Collectively, our findings highlight the composition of the bacterial cell wall as a major determinant of secretion-independent delivery of virulence factors during Gram-negative infections. PMID:29186191

  9. Light-stimulated cargo release from a core–shell structured nanocomposite for site-specific delivery

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Cai, Yun; Ling, Li; Li, Xiaofang

    This paper reported a core–shell structured site-specific delivery system with a light switch triggered by low energy light (λ=510 nm). Its core was composed of supermagnetic Fe{sub 3}O{sub 4} nanoparticles for magnetic guiding and targeting. Its outer shell consisted of mesoporous silica molecular sieve MCM-41 which offered highly ordered hexagonal tunnels for cargo capacity. A light switch N1-(4aH-cyclopenta[1,2-b:5,4-b′]dipyridin-5(5aH)-ylidene)benzene-1, 4-diamine (CBD) was covalently grafted into these hexagonal tunnels, serving as light stimuli acceptor with loading content of 1.1 μM/g. This composite was fully characterized and confirmed by SEM, TEM, XRD patterns, N{sub 2} adsorption/desorption, thermogravimetric analysis, IR, UV–vis absorption and emissionmore » spectra. Experimental data suggested that this composite had a core as wide as 150 nm and could be magnetically guided to specific sites. Its hexagonal tunnels were as long as 180 nm. Upon light stimuli of “on” and “off” states, controllable release was observed with short release time of ~900 s (90% capacity). - Graphical abstract: A core–shell structured site-specific delivery system with a light switch triggered by yellow light was constructed. Controllable release was observed with short release time of ~900 s (90% capacity). - Highlights: • A core–shell structured site-specific delivery system was constructed. • It consisted of Fe{sub 3}O{sub 4} core and MCM-41 shell grafted with light switch. • This delivery system was triggered by low energy light. • Controllable release was observed with short release time of ~900 s.« less

  10. Liposome-Cross-Linked Hybrid Hydrogels for Glutathione-Triggered Delivery of Multiple Cargo Molecules.

    PubMed

    Liang, Yingkai; Kiick, Kristi L

    2016-02-08

    Novel, liposome-cross-linked hybrid hydrogels cross-linked by the Michael-type addition of thiols with maleimides were prepared via the use of maleimide-functionalized liposome cross-linkers and thiolated polyethylene glycol (PEG) polymers. Gelation of the materials was confirmed by oscillatory rheology experiments. These hybrid hydrogels are rendered degradable upon exposure to thiol-containing molecules such as glutathione (GSH), via the incorporation of selected thioether succinimide cross-links between the PEG polymers and liposome nanoparticles. Dynamic light scattering (DLS) characterization confirmed that intact liposomes were released upon network degradation. Owing to the hierarchical structure of the network, multiple cargo molecules relevant for chemotherapies, namely doxorubicin (DOX) and cytochrome c, were encapsulated and simultaneously released from the hybrid hydrogels, with differential release profiles that were driven by degradation-mediated release and Fickian diffusion, respectively. This work introduces a facile approach for the development of advanced, hybrid drug delivery vehicles that exhibit novel chemical degradation.

  11. Intestine-Specific, Oral Delivery of Captopril/Montmorillonite: Formulation and Release Kinetics

    PubMed Central

    2011-01-01

    The intercalation of captopril (CP) into the interlayers of montmorillonite (MMT) affords an intestine-selective drug delivery system that has a captopril-loading capacity of up to ca. 14 %w/w and which exhibits near-zero-order release kinetics. PMID:27502639

  12. Multiscale benchmarking of drug delivery vectors.

    PubMed

    Summers, Huw D; Ware, Matthew J; Majithia, Ravish; Meissner, Kenith E; Godin, Biana; Rees, Paul

    2016-10-01

    Cross-system comparisons of drug delivery vectors are essential to ensure optimal design. An in-vitro experimental protocol is presented that separates the role of the delivery vector from that of its cargo in determining the cell response, thus allowing quantitative comparison of different systems. The technique is validated through benchmarking of the dose-response of human fibroblast cells exposed to the cationic molecule, polyethylene imine (PEI); delivered as a free molecule and as a cargo on the surface of CdSe nanoparticles and Silica microparticles. The exposure metrics are converted to a delivered dose with the transport properties of the different scale systems characterized by a delivery time, τ. The benchmarking highlights an agglomeration of the free PEI molecules into micron sized clusters and identifies the metric determining cell death as the total number of PEI molecules presented to cells, determined by the delivery vector dose and the surface density of the cargo. Copyright © 2016 Elsevier Inc. All rights reserved.

  13. Kinetics of Reciprocating Drug Delivery to the Inner Ear

    PubMed Central

    Leary Pararas, Erin E.; Chen, Zhiqiang; Fiering, Jason; Mescher, Mark J.; Kim, Ernest S.; McKenna, Michael J.; Kujawa, Sharon G.; Borenstein, Jeffrey T.; Sewell, William F.

    2011-01-01

    Reciprocating drug delivery is a means of delivering soluble drugs directly to closed fluid spaces in the body via a single cannula without an accompanying fluid volume change. It is ideally suited for drug delivery into small, sensitive and unique fluid spaces such as the cochlea. We characterized the pharmacokinetics of reciprocating drug delivery to the scala tympani within the cochlea by measuring the effects of changes in flow parameters on the distribution of drug throughout the length of the cochlea. Distribution was assessed by monitoring the effects of DNQX, a reversible glutamate receptor blocker, delivered directly to the inner ear of guinea pigs using reciprocating flow profiles. We then modeled the effects of those parameters on distribution using both an iterative curve-fitting approach and a computational fluid dynamic model. Our findings are consistent with the hypothesis that reciprocating delivery distributes the drug into a volume in the base of the cochlea, and suggest that the primary determinant of distribution throughout more distal regions of the cochlea is diffusion. Increases in flow rate distributed the drug into a larger volume that extended more apically. Over short time courses (less than 2 h), the apical extension, though small, significantly enhanced apically directed delivery of drug. Over longer time courses (>5 h) or greater distances (>3 mm), maintenance of drug concentration in the basal scala tympani may prove more advantageous for extending apical delivery than increases in flow rate. These observations demonstrate that this reciprocating technology is capable of providing controlled delivery kinetics to the closed fluid space in the cochlea, and may be suitable for other applications such as localized brain and retinal delivery. PMID:21385596

  14. Cell-specific transmembrane injection of molecular cargo with gold nanoparticle-generated transient plasmonic nanobubbles

    PubMed Central

    Lukianova-Hleb, Ekaterina Y.; Wagner, Daniel S.; Brenner, Malcolm K.; Lapotko, Dmitri O.

    2012-01-01

    Optimal cell therapies require efficient, selective and rapid delivery of molecular cargo into target cells without compromising their viability. Achieving these goals ex vivo in bulk heterogeneous multi-cell systems such as human grafts is impeded by low selectivity and speed of cargo delivery and by significant damage to target and non-target cells. We have developed a cell level approach for selective and guided trans-membrane injection of extracellular cargo into specific target cells using transient plasmonic nanobubbles (PNB) as cell-specific nano-injectors. As a technical platform for this method we developed a laser flow cell processing system. The PNB injection method and flow system were tested in heterogeneous cell suspensions of target and non-target cells for delivery of Dextran-FITC dye into squamous cell carcinoma HN31 cells and transfection of human T-cells with a green fluorescent protein-encoding plasmid. In both models the method demonstrated single cell type selectivity, high efficacy of delivery (96% both for HN31 cells T-cells), speed of delivery (nanoseconds) and viability of treated target cells (96% for HN31 cells and 75% for T-cells). The PNB injection method may therefore be beneficial for real time processing of human grafts without removal of physiologically important cells. PMID:22521612

  15. Cell-specific transmembrane injection of molecular cargo with gold nanoparticle-generated transient plasmonic nanobubbles.

    PubMed

    Lukianova-Hleb, Ekaterina Y; Wagner, Daniel S; Brenner, Malcolm K; Lapotko, Dmitri O

    2012-07-01

    Optimal cell therapies require efficient, selective and rapid delivery of molecular cargo into target cells without compromising their viability. Achieving these goals ex vivo in bulk heterogeneous multi-cell systems such as human grafts is impeded by low selectivity and speed of cargo delivery and by significant damage to target and non-target cells. We have developed a cell level approach for selective and guided transmembrane injection of extracellular cargo into specific target cells using transient plasmonic nanobubbles (PNB) as cell-specific nano-injectors. As a technical platform for this method we developed a laser flow cell processing system. The PNB injection method and flow system were tested in heterogeneous cell suspensions of target and non-target cells for delivery of Dextran-FITC dye into squamous cell carcinoma HN31 cells and transfection of human T-cells with a green fluorescent protein-encoding plasmid. In both models the method demonstrated single cell type selectivity, high efficacy of delivery (96% both for HN31 cells T-cells), speed of delivery (nanoseconds) and viability of treated target cells (96% for HN31 cells and 75% for T-cells). The PNB injection method may therefore be beneficial for real time processing of human grafts without removal of physiologically important cells. Copyright © 2012 Elsevier Ltd. All rights reserved.

  16. 46 CFR 154.534 - Cargo pumps and cargo compressors.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo pumps and cargo compressors. 154.534 Section 154... SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo and Process Piping Systems § 154.534 Cargo pumps and cargo compressors. Cargo pumps and...

  17. HPMA-based block copolymers promote differential drug delivery kinetics for hydrophobic and amphiphilic molecules.

    PubMed

    Tomcin, Stephanie; Kelsch, Annette; Staff, Roland H; Landfester, Katharina; Zentel, Rudolf; Mailänder, Volker

    2016-04-15

    We describe a method how polymeric nanoparticles stabilized with (2-hydroxypropyl)methacrylamide (HPMA)-based block copolymers are used as drug delivery systems for a fast release of hydrophobic and a controlled release of an amphiphilic molecule. The versatile method of the miniemulsion solvent-evaporation technique was used to prepare polystyrene (PS) as well as poly-d/l-lactide (PDLLA) nanoparticles. Covalently bound or physically adsorbed fluorescent dyes labeled the particles' core and their block copolymer corona. Confocal laser scanning microscopy (CLSM) in combination with flow cytometry measurements were applied to demonstrate the burst release of a fluorescent hydrophobic drug model without the necessity of nanoparticle uptake. In addition, CLSM studies and quantitative calculations using the image processing program Volocity® show the intracellular detachment of the amphiphilic block copolymer from the particles' core after uptake. Our findings offer the possibility to combine the advantages of a fast release for hydrophobic and a controlled release for an amphiphilic molecule therefore pointing to the possibility to a 'multi-step and multi-site' targeting by one nanocarrier. We describe thoroughly how different components of a nanocarrier end up in cells. This enables different cargos of a nanocarrier having a consecutive release and delivery of distinct components. Most interestingly we demonstrate individual kinetics of distinct components of such a system: first the release of a fluorescent hydrophobic drug model at contact with the cell membrane without the necessity of nanoparticle uptake. Secondly, the intracellular detachment of the amphiphilic block copolymer from the particles' core after uptake occurs. This offers the possibility to combine the advantages of a fast release for a hydrophobic substance at the time of interaction of the nanoparticle with the cell surface and a controlled release for an amphiphilic molecule later on therefore

  18. Cargo-shell and cargo-cargo couplings govern the mechanics of artificially loaded virus-derived cages

    NASA Astrophysics Data System (ADS)

    Llauró, Aida; Luque, Daniel; Edwards, Ethan; Trus, Benes L.; Avera, John; Reguera, David; Douglas, Trevor; Pablo, Pedro J. De; Castón, José R.

    2016-04-01

    Nucleic acids are the natural cargo of viruses and key determinants that affect viral shell stability. In some cases the genome structurally reinforces the shell, whereas in others genome packaging causes internal pressure that can induce destabilization. Although it is possible to pack heterologous cargoes inside virus-derived shells, little is known about the physical determinants of these artificial nanocontainers' stability. Atomic force and three-dimensional cryo-electron microscopy provided mechanical and structural information about the physical mechanisms of viral cage stabilization beyond the mere presence/absence of cargos. We analyzed the effects of cargo-shell and cargo-cargo interactions on shell stability after encapsulating two types of proteinaceous payloads. While bound cargo to the inner capsid surface mechanically reinforced the capsid in a structural manner, unbound cargo diffusing freely within the shell cavity pressurized the cages up to ~30 atm due to steric effects. Strong cargo-cargo coupling reduces the resilience of these nanocompartments in ~20% when bound to the shell. Understanding the stability of artificially loaded nanocages will help to design more robust and durable molecular nanocontainers.Nucleic acids are the natural cargo of viruses and key determinants that affect viral shell stability. In some cases the genome structurally reinforces the shell, whereas in others genome packaging causes internal pressure that can induce destabilization. Although it is possible to pack heterologous cargoes inside virus-derived shells, little is known about the physical determinants of these artificial nanocontainers' stability. Atomic force and three-dimensional cryo-electron microscopy provided mechanical and structural information about the physical mechanisms of viral cage stabilization beyond the mere presence/absence of cargos. We analyzed the effects of cargo-shell and cargo-cargo interactions on shell stability after encapsulating two

  19. Versatile Loading of Diverse Cargo into Functional Polymer Capsules.

    PubMed

    Richardson, Joseph J; Maina, James W; Ejima, Hirotaka; Hu, Ming; Guo, Junling; Choy, Mei Y; Gunawan, Sylvia T; Lybaert, Lien; Hagemeyer, Christoph E; De Geest, Bruno G; Caruso, Frank

    2015-02-01

    Polymer microcapsules are of particular interest for applications including self-healing coatings, catalysis, bioreactions, sensing, and drug delivery. The primary way that polymer capsules can exhibit functionality relevant to these diverse fields is through the incorporation of functional cargo in the capsule cavity or wall. Diverse functional and therapeutic cargo can be loaded into polymer capsules with ease using polymer-stabilized calcium carbonate (CaCO 3 ) particles. A variety of examples are demonstrated, including 15 types of cargo, yielding a toolbox with effectively 500+ variations. This process uses no harsh reagents and can take less than 30 min to prepare, load, coat, and form the hollow capsules. For these reasons, it is expected that the technique will play a crucial role across scientific studies in numerous fields.

  20. Kinetics of reciprocating drug delivery to the inner ear.

    PubMed

    Pararas, Erin E Leary; Chen, Zhiqiang; Fiering, Jason; Mescher, Mark J; Kim, Ernest S; McKenna, Michael J; Kujawa, Sharon G; Borenstein, Jeffrey T; Sewell, William F

    2011-06-10

    Reciprocating drug delivery is a means of delivering soluble drugs directly to closed fluid spaces in the body via a single cannula without an accompanying fluid volume change. It is ideally suited for drug delivery into small, sensitive and unique fluid spaces such as the cochlea. We characterized the pharmacokinetics of reciprocating drug delivery to the scala tympani within the cochlea by measuring the effects of changes in flow parameters on the distribution of drug throughout the length of the cochlea. Distribution was assessed by monitoring the effects of DNQX, a reversible glutamate receptor blocker, delivered directly to the inner ear of guinea pigs using reciprocating flow profiles. We then modeled the effects of those parameters on distribution using both an iterative curve-fitting approach and a computational fluid dynamic model. Our findings are consistent with the hypothesis that reciprocating delivery distributes the drug into a volume in the base of the cochlea, and suggest that the primary determinant of distribution throughout more distal regions of the cochlea is diffusion. Increases in flow rate distributed the drug into a larger volume that extended more apically. Over short time courses (less than 2h), the apical extension, though small, significantly enhanced apically directed delivery of drug. Over longer time courses (>5h) or greater distances (>3mm), maintenance of drug concentration in the basal scala tympani may prove more advantageous for extending apical delivery than increases in flow rate. These observations demonstrate that this reciprocating technology is capable of providing controlled delivery kinetics to the closed fluid space in the cochlea, and may be suitable for other applications such as localized brain and retinal delivery. Copyright © 2011 Elsevier B.V. All rights reserved.

  1. 46 CFR 154.315 - Cargo pump and cargo compressor rooms.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo pump and cargo compressor rooms. 154.315 Section... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Ship Arrangements § 154.315 Cargo pump and cargo compressor rooms. (a) Cargo pump rooms and cargo...

  2. Injectable nanocomposite cryogels for versatile protein drug delivery.

    PubMed

    Koshy, Sandeep T; Zhang, David K Y; Grolman, Joshua M; Stafford, Alexander G; Mooney, David J

    2018-01-01

    Sustained, localized protein delivery can enhance the safety and activity of protein drugs in diverse disease settings. While hydrogel systems are widely studied as vehicles for protein delivery, they often suffer from rapid release of encapsulated cargo, leading to a narrow duration of therapy, and protein cargo can be denatured by incompatibility with the hydrogel crosslinking chemistry. In this work, we describe injectable nanocomposite hydrogels that are capable of sustained, bioactive, release of a variety of encapsulated proteins. Injectable and porous cryogels were formed by bio-orthogonal crosslinking of alginate using tetrazine-norbornene coupling. To provide sustained release from these hydrogels, protein cargo was pre-adsorbed to charged Laponite nanoparticles that were incorporated within the walls of the cryogels. The presence of Laponite particles substantially hindered the release of a number of proteins that otherwise showed burst release from these hydrogels. By modifying the Laponite content within the hydrogels, the kinetics of protein release could be precisely tuned. This versatile strategy to control protein release simplifies the design of hydrogel drug delivery systems. Here we present an injectable nanocomposite hydrogel for simple and versatile controlled release of therapeutic proteins. Protein release from hydrogels often requires first entrapping the protein in particles and embedding these particles within the hydrogel to allow controlled protein release. This pre-encapsulation process can be cumbersome, can damage the protein's activity, and must be optimized for each protein of interest. The strategy presented in this work simply premixes the protein with charged nanoparticles that bind strongly with the protein. These protein-laden particles are then placed within a hydrogel and slowly release the protein into the surrounding environment. Using this method, tunable release from an injectable hydrogel can be achieved for a variety of

  3. Coupling of active motion and advection shapes intracellular cargo transport.

    PubMed

    Khuc Trong, Philipp; Guck, Jochen; Goldstein, Raymond E

    2012-07-13

    Intracellular cargo transport can arise from passive diffusion, active motor-driven transport along cytoskeletal filament networks, and passive advection by fluid flows entrained by such cargo-motor motion. Active and advective transport are thus intrinsically coupled as related, yet different representations of the same underlying network structure. A reaction-advection-diffusion system is used here to show that this coupling affects the transport and localization of a passive tracer in a confined geometry. For sufficiently low diffusion, cargo localization to a target zone is optimized either by low reaction kinetics and decoupling of bound and unbound states, or by a mostly disordered cytoskeletal network with only weak directional bias. These generic results may help to rationalize subtle features of cytoskeletal networks, for example as observed for microtubules in fly oocytes.

  4. Direct cytosolic delivery of cargoes in vivo by a chimera consisting of D- and L-arginine residues.

    PubMed

    Ma, Yan; Gong, Cheng; Ma, Yilong; Fan, Fengkai; Luo, Meijie; Yang, Fei; Zhang, Yu-Hui

    2012-09-10

    The ability of cell-penetrating peptides (CPPs) to deliver a range of membrane-impermeable molecules into living cells makes them attractive potential vehicles for therapeutics. However, in vivo, the efficiency of CPP delivery to the cytosol remains unsatisfactory owing to endosomal entrapment and/or systemic toxicity, which severely restrict their bioavailability and efficacy in in vivo applications. In this study, we developed a series of novel chimeras consisting of various numbers of d- and l-arginine residues and investigated their cellular uptake behaviors and systemic toxicities. We demonstrated that the intracellular distribution, uptake efficiency, and systemic toxicity of these oligoarginines were all significantly affected by the number of d-arginine residues in the peptide sequence. We also found that a hybrid peptide, (rR)(3)R(2), possessed low systemic toxicity, high uptake efficiency, and, remarkably, achieved efficient cytosolic delivery not only in cultured cells but also in living tissue cells in mice after intravenous injection, implying that this heterogeneous motif might have promising applications in the delivery of cargoes of small sizes directed to cytosolic targets in vivo. Our studies into the uptake mechanism of (rR)(3)R(2) indicate that its cellular uptake was not affected by pharmacological or physical inhibitors of endocytosis but by the elimination of the membrane potential, suggesting that (rR)(3)R(2) does not enter the cells via endocytosis but rather through direct membrane translocation driven by the membrane potential. The results here might provide useful guidelines for the design and application of CPPs in drug delivery. Copyright © 2012 Elsevier B.V. All rights reserved.

  5. 46 CFR 111.106-13 - Cargo handling devices or cargo pump rooms handling flammable or combustible cargoes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... pierced by fixed lights, drive shafts, and pump-engine control rods, provided that the shafts and rods are... 46 Shipping 4 2014-10-01 2014-10-01 false Cargo handling devices or cargo pump rooms handling... OSVs § 111.106-13 Cargo handling devices or cargo pump rooms handling flammable or combustible cargoes...

  6. CargoTIPS: an innovative approach to combating cargo theft

    NASA Astrophysics Data System (ADS)

    Toth, Gail E.

    1998-12-01

    Cargo theft has been estimated by the Federal Bureau o Investigations to be 6 billion annually, while others believe it to be more than 10 billion annually. Opportunistic thieves, street gangs, traditional organized crime groups, and new organized crime groups have been targeting cargo. They steal from warehouses, terminals, equipment, truck stops, or any place where freight comes to a rest. With zero inventory levels, our trailers have become virtual warehouses on wheels and easy targets for thieves. Without information and communication cargo thieves can thrive. The industry and law enforcement are forced into being reactive instead of developing proactive policies and procedures. Cargo thieves cross town lines, county lines, state lines and country borders. This makes communication within the law enforcement community imperative. CargoTIPS (cargo theft information processing system) was developed in response to the need for cargo theft information. The system allows us to collect cargo theft statistics to analyze the problem, assess the threat and develop a response on a national level. CargoTIPS includes a bulletin board, which allows users to communicate with each other, pass on alerts or seek information. The system is also used as an investigative tool. CargoTIPS can identify the mode of transportation (truck, small parcel, air, rail or ocean). It was designed to take in international data. Currently the system has identified that food products are the number one targeted commodity, followed by electronic products and third, computers and computer parts.

  7. Active and passive transport of cargo in a corrugated channel: A lattice model study

    NASA Astrophysics Data System (ADS)

    Dey, Supravat; Ching, Kevin; Das, Moumita

    2018-04-01

    Inside cells, cargos such as vesicles and organelles are transported by molecular motors to their correct locations via active motion on cytoskeletal tracks and passive, Brownian diffusion. During the transportation of cargos, motor-cargo complexes (MCCs) navigate the confining and crowded environment of the cytoskeletal network and other macromolecules. Motivated by this, we study a minimal two-state model of motor-driven cargo transport in confinement and predict transport properties that can be tested in experiments. We assume that the motion of the MCC is directly affected by the entropic barrier due to confinement if it is in the passive, unbound state but not in the active, bound state where it moves with a constant bound velocity. We construct a lattice model based on a Fokker Planck description of the two-state system, study it using a kinetic Monte Carlo method and compare our numerical results with analytical expressions for a mean field limit. We find that the effect of confinement strongly depends on the bound velocity and the binding kinetics of the MCC. Confinement effectively reduces the effective diffusivity and average velocity, except when it results in an enhanced average binding rate and thereby leads to a larger average velocity than when unconfined.

  8. Development of efficiency module of organization of Arctic sea cargo transportation with application of neural network technologies

    NASA Astrophysics Data System (ADS)

    Sobolevskaya, E. Yu; Glushkov, S. V.; Levchenko, N. G.; Orlov, A. P.

    2018-05-01

    The analysis of software intended for organizing and managing the processes of sea cargo transportation has been carried out. The shortcomings of information resources are presented, for the organization of work in the Arctic and Subarctic regions of the Far East: the lack of decision support systems, the lack of factor analysis to calculate the time and cost of delivery. The architecture of the module for calculating the effectiveness of the organization of sea cargo transportation has been developed. The simulation process has been considered, which is based on the neural network. The main classification factors with their weighting coefficients have been identified. The architecture of the neural network has been developed to calculate the efficiency of the organization of sea cargo transportation in Arctic conditions. The architecture of the intellectual system of organization of sea cargo transportation has been developed, taking into account the difficult navigation conditions in the Arctic. Its implementation will allow one to provide the management of the shipping company with predictive analytics; to support decision-making; to calculate the most efficient delivery route; to provide on demand online transportation forecast, to minimize the shipping cost, delays in transit, and risks to cargo safety.

  9. Vps33B is required for delivery of endocytosed cargo to lysosomes.

    PubMed

    Galmes, Romain; ten Brink, Corlinda; Oorschot, Viola; Veenendaal, Tineke; Jonker, Caspar; van der Sluijs, Peter; Klumperman, Judith

    2015-12-01

    Lysosomes are the main degradative compartments of eukaryotic cells. The CORVET and HOPS tethering complexes are well known for their role in membrane fusion in the yeast endocytic pathway. Yeast Vps33p is part of both complexes, and has two mammalian homologues: Vps33A and Vps33B. Vps33B is required for recycling of apical proteins in polarized cells and a causative gene for ARC syndrome. Here, we investigate whether Vps33B is also required in the degradative pathway. By fluorescence and electron microscopy we show that Vps33B depletion in HeLa cells leads to significantly increased numbers of late endosomes that together with lysosomes accumulate in the perinuclear region. Degradation of endocytosed cargo is impaired in these cells. By electron microscopy we show that endocytosed BSA-gold reaches late endosomes, but is decreased in lysosomes. The increase in late endosome numbers and the lack of internalized cargo in lysosomes are indicative for a defect in late endosomal-lysosomal fusion events, which explains the observed decrease in cargo degradation. A corresponding phenotype was found after Vps33A knock down, which in addition also resulted in decreased lysosome numbers. We conclude that Vps33B, in addition to its role in endosomal recycling, is required for late endosomal-lysosomal fusion events. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  10. A systematic approach to pair secretory cargo receptors with their cargo suggests a mechanism for cargo selection by Erv14.

    PubMed

    Herzig, Yonatan; Sharpe, Hayley J; Elbaz, Yael; Munro, Sean; Schuldiner, Maya

    2012-01-01

    The endoplasmic reticulum (ER) is the site of synthesis of secreted and membrane proteins. To exit the ER, proteins are packaged into COPII vesicles through direct interaction with the COPII coat or aided by specific cargo receptors. Despite the fundamental role of such cargo receptors in protein traffic, only a few have been identified; their cargo spectrum is unknown and the signals they recognize remain poorly understood. We present here an approach we term "PAIRS" (pairing analysis of cargo receptors), which combines systematic genetic manipulations of yeast with automated microscopy screening, to map the spectrum of cargo for a known receptor or to uncover a novel receptor for a particular cargo. Using PAIRS we followed the fate of ∼150 cargos on the background of mutations in nine putative cargo receptors and identified novel cargo for most of these receptors. Deletion of the Erv14 cargo receptor affected the widest range of cargo. Erv14 substrates have a wide array of functions and structures; however, they are all membrane-spanning proteins of the late secretory pathway or plasma membrane. Proteins residing in these organelles have longer transmembrane domains (TMDs). Detailed examination of one cargo supported the hypothesis that Erv14 dependency reflects the length rather than the sequence of the TMD. The PAIRS approach allowed us to uncover new cargo for known cargo receptors and to obtain an unbiased look at specificity in cargo selection. Obtaining the spectrum of cargo for a cargo receptor allows a novel perspective on its mode of action. The rules that appear to guide Erv14 substrate recognition suggest that sorting of membrane proteins at multiple points in the secretory pathway could depend on the physical properties of TMDs. Such a mechanism would allow diverse proteins to utilize a few receptors without the constraints of evolving location-specific sorting motifs.

  11. Controlling drug delivery kinetics from mesoporous titania thin films by pore size and surface energy.

    PubMed

    Karlsson, Johan; Atefyekta, Saba; Andersson, Martin

    2015-01-01

    The osseointegration capacity of bone-anchoring implants can be improved by the use of drugs that are administrated by an inbuilt drug delivery system. However, to attain superior control of drug delivery and to have the ability to administer drugs of varying size, including proteins, further material development of drug carriers is needed. Mesoporous materials have shown great potential in drug delivery applications to provide and maintain a drug concentration within the therapeutic window for the desired period of time. Moreover, drug delivery from coatings consisting of mesoporous titania has shown to be promising to improve healing of bone-anchoring implants. Here we report on how the delivery of an osteoporosis drug, alendronate, can be controlled by altering pore size and surface energy of mesoporous titania thin films. The pore size was varied from 3.4 nm to 7.2 nm by the use of different structure-directing templates and addition of a swelling agent. The surface energy was also altered by grafting dimethylsilane to the pore walls. The drug uptake and release profiles were monitored in situ using quartz crystal microbalance with dissipation (QCM-D) and it was shown that both pore size and surface energy had a profound effect on both the adsorption and release kinetics of alendronate. The QCM-D data provided evidence that the drug delivery from mesoporous titania films is controlled by a binding-diffusion mechanism. The yielded knowledge of release kinetics is crucial in order to improve the in vivo tissue response associated to therapeutic treatments.

  12. Manipulating the membrane penetration mechanism of helical polypeptides via aromatic modification for efficient gene delivery.

    PubMed

    Zheng, Nan; Song, Ziyuan; Yang, Jiandong; Liu, Yang; Li, Fangfang; Cheng, Jianjun; Yin, Lichen

    2017-08-01

    The delivery performance of non-viral gene vectors is greatly related to their intracellular kinetics. Cationic helical polypeptides with potent membrane penetration properties and gene transfection efficiencies have been recently developed by us. However, they suffer from severe drawbacks in terms of their membrane penetration mechanisms that mainly include endocytosis and pore formation. The endocytosis mechanism leads to endosomal entrapment of gene cargos, while the charge- and helicity-induced pore formation causes appreciable cytotoxicity at high concentrations. With the attempt to overcome such critical challenges, we incorporated aromatic motifs into the design of helical polypeptides to enhance their membrane activities and more importantly, to manipulate their membrane penetration mechanisms. The aromatically modified polypeptides exhibited higher cellular internalization level than the unmodified analogue by up to 2.5 folds. Such improvement is possibly because aromatic domains promoted the polypeptides to penetrate cell membranes via direct transduction, a non-endocytosis and non-pore formation mechanism. As such, gene cargos were more efficiently delivered into cells by bypassing endocytosis and subsequently avoiding endosomal entrapment, and the material toxicity associated with excessive pore formation was also reduced. The top-performing aromatic polypeptide containing naphthyl side chains at the incorporated content of 20mol% revealed notably higher transfection efficiencies than commercial reagents in melanoma cells in vitro (by 11.7 folds) and in vivo (by 9.1 folds), and thus found potential utilities toward topical gene delivery for cancer therapy. Cationic helical polypeptides, as efficient gene delivery materials, suffer from severe drawbacks in terms of their membrane penetration mechanisms. The main cell penetration mechanisms involved are endocytosis and pore formation. However, the endocytosis mechanism has the limitation of endosomal

  13. Opportunities for development of advanced large cargo aircraft

    NASA Technical Reports Server (NTRS)

    Whitehead, A. H., Jr.

    1976-01-01

    A critical review of the history, current state of the art, and future prospects for cargo aircraft systems indicates that three of the major advantages of air cargo are rapid delivery, ability to bridge geographical boundaries, and capability to provide a flexible market response. Foreseeable advances in large aircraft development offer even greater profit potential by increasing the payload ton-miles per pound of fuel. Intermodal containers and handling systems and computerized control and billing may be key ingredients. Details of a NASA program for large aircraft systems technology are outlined, which includes systems studies, research and technology investigations, and determination of the need for critical flight experiments. Innovative advanced technologies and configuration concepts are discussed. Numerous illustrations supplement the text.

  14. Development of switchable polymers to address the dilemma of stability and cargo release in polycationic nucleic acid carriers.

    PubMed

    Cheng, Yilong; Sellers, Drew L; Tan, James-Kevin Y; Peeler, David J; Horner, Philip J; Pun, Suzie H

    2017-05-01

    Cationic polymer gene delivery vehicles that effectively resist premature serum degradation often have difficulty releasing their nucleic acid cargoes. In this work, we report a pH-sensitive polymer (SP), poly(oligo(ethylene glycol) monomethyl ether methacrylate)-co-poly(2-(dimethylamino)ethyl methacrylate)-block- poly(propargyl methacrylate-graft-propyl-(4-methoxy-benzylidene)-amine) (p(PMA-PMBA)-b-(p(OEGMA-DMAEMA)), for successful in vitro and in vivo gene transfer. In the physiological condition, the hydrophobization of p(OEGMA-DMAEMA) polycations by p(PMA-PMBA) significantly enhanced the stability of its polyplexes counterpart. In endosomes, the polymer undergoes an acid-triggered hydrophilic transition through the cleavage of benzoic imines, thus allowing the vector to quickly release nucleic acid cargo due to the loss of hydrophobic functionalization. Compared to a pH-insensitive polymer (IP), SP exhibited more significant luciferase plasmid delivery efficiency with HeLa cells in vitro and with in vivo intraventricular brain injections. Therefore, the polymer designed here is a good solution to address the dilemma of stability and cargo release in gene delivery, and may have broad potential applications in therapeutic agent delivery. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. 49 CFR 1544.228 - Access to cargo and cargo screening: Security threat assessments for cargo personnel in the...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... cargo enters an airport Security Identification Display Area or is transferred to another TSA-regulated... program accepts the cargo until the cargo— (A) Enters an airport Security Identification Display Area; (B... 49 Transportation 9 2012-10-01 2012-10-01 false Access to cargo and cargo screening: Security...

  16. 49 CFR 1544.228 - Access to cargo and cargo screening: Security threat assessments for cargo personnel in the...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... cargo enters an airport Security Identification Display Area or is transferred to another TSA-regulated... program accepts the cargo until the cargo— (A) Enters an airport Security Identification Display Area; (B... 49 Transportation 9 2014-10-01 2014-10-01 false Access to cargo and cargo screening: Security...

  17. 49 CFR 1544.228 - Access to cargo and cargo screening: Security threat assessments for cargo personnel in the...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... cargo enters an airport Security Identification Display Area or is transferred to another TSA-regulated... program accepts the cargo until the cargo— (A) Enters an airport Security Identification Display Area; (B... 49 Transportation 9 2013-10-01 2013-10-01 false Access to cargo and cargo screening: Security...

  18. 49 CFR 1544.228 - Access to cargo and cargo screening: Security threat assessments for cargo personnel in the...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... cargo enters an airport Security Identification Display Area or is transferred to another TSA-regulated... program accepts the cargo until the cargo— (A) Enters an airport Security Identification Display Area; (B... 49 Transportation 9 2011-10-01 2011-10-01 false Access to cargo and cargo screening: Security...

  19. Solar electric propulsion cargo spacecraft for Mars missions

    NASA Technical Reports Server (NTRS)

    1991-01-01

    One of the topics available to the 1990-91 Aerospace Engineering senior class was the development of a preliminary design of an unmanned cargo ferry that would support the Mars mission by bringing equipment and supplies from a low Earth orbit (LEO) to a low Mars orbit (LMO). Several previous studies initiated by NASA have indicated that low-thrust transportation systems seem to offer the best performance for Mars missions. Such systems are characterized by long spiral times during escape and capture maneuvers, high payload mass fractions, and, typically, low propellant mass fractions. Of two main low-thrust candidates, nuclear electric propulsion (NEP) and solar electric propulsion (SEP), only the first one received extensive consideration because it seemed to represent the most promising concept for a manned mission to Mars. However, any sustained Mars initiative will have to include an unmanned cargo transportation system, for which an SEP concept deserves very careful consideration. The key assumptions and requirements established in cooperation with the Space Exploration Initiative office at the NASA Langley Research Center were (1) vehicle is assembled at the Space Station Freedom (SSF); (2) Earth-to-orbit delivery of the vehicle components, propellant, and payload is via shuttle-C; (3) vehicle's cargo mass is 61,000 kg; (4) vehicle delivers cargo to LMO at an altitude of 500 km and inclination of 70 deg; (5) vehicle returns (without cargo) to SSF; (6) vehicle should be reusable for at least three missions; and (7) vehicle is powered by ion argon thrusters. Two configurations were developed by two student teams, working mostly independently.

  20. Quantitative proteomics identifies NCOA4 as the cargo receptor mediating ferritinophagy.

    PubMed

    Mancias, Joseph D; Wang, Xiaoxu; Gygi, Steven P; Harper, J Wade; Kimmelman, Alec C

    2014-05-01

    Autophagy, the process by which proteins and organelles are sequestered in double-membrane structures called autophagosomes and delivered to lysosomes for degradation, is critical in diseases such as cancer and neurodegeneration. Much of our understanding of this process has emerged from analysis of bulk cytoplasmic autophagy, but our understanding of how specific cargo, including organelles, proteins or intracellular pathogens, are targeted for selective autophagy is limited. Here we use quantitative proteomics to identify a cohort of novel and known autophagosome-enriched proteins in human cells, including cargo receptors. Like known cargo receptors, nuclear receptor coactivator 4 (NCOA4) was highly enriched in autophagosomes, and associated with ATG8 proteins that recruit cargo-receptor complexes into autophagosomes. Unbiased identification of NCOA4-associated proteins revealed ferritin heavy and light chains, components of an iron-filled cage structure that protects cells from reactive iron species but is degraded via autophagy to release iron through an unknown mechanism. We found that delivery of ferritin to lysosomes required NCOA4, and an inability of NCOA4-deficient cells to degrade ferritin led to decreased bioavailable intracellular iron. This work identifies NCOA4 as a selective cargo receptor for autophagic turnover of ferritin (ferritinophagy), which is critical for iron homeostasis, and provides a resource for further dissection of autophagosomal cargo-receptor connectivity.

  1. Graphene as multifunctional delivery platform in cancer therapy.

    PubMed

    Nejabat, Mojgan; Charbgoo, Fahimeh; Ramezani, Mohammad

    2017-08-01

    The biomedical applications of graphene-based nanomaterials including drug and gene delivery have grown rapidly in the past few years. This is due to its high surface area that results in high cargo loading capacity. It is demonstrated that graphene can improve drug efficacy without increasing the dose of the chemotherapeutic agent in cancer treatment. Considering these valuable benefits of graphene, this review focused on the newest advancements in drug and gene delivery systems using graphene and unveiling advantages and disadvantages of different graphene-based materials in introducing an effective cargo delivery system for cancer therapy. Different approaches for reducing cytotoxic impacts of graphene oxide and production of biocompatible delivery platform were also reviewed. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2355-2367, 2017. © 2017 Wiley Periodicals, Inc.

  2. Intracellular Protein Delivery System Using a Target-Specific Repebody and Translocation Domain of Bacterial Exotoxin.

    PubMed

    Kim, Hee-Yeon; Kang, Jung Ae; Ryou, Jeong-Hyun; Lee, Gyeong Hee; Choi, Dae Seong; Lee, Dong Eun; Kim, Hak-Sung

    2017-11-17

    With the high efficacy of protein-based therapeutics and plenty of intracellular drug targets, cytosolic protein delivery in a cell-specific manner has attracted considerable attention in the field of precision medicine. Herein, we present an intracellular protein delivery system based on a target-specific repebody and the translocation domain of Pseudomonas aeruginosa exotoxin A. The delivery platform was constructed by genetically fusing an EGFR-specific repebody as a targeting moiety to the translocation domain, while a protein cargo was fused to the C-terminal end of the delivery platform. The delivery platform was revealed to efficiently translocate a protein cargo to the cytosol in a target-specific manner. We demonstrate the utility and potential of the delivery platform by showing a remarkable tumor regression with negligible toxicity in a xenograft mice model when gelonin was used as the cytotoxic protein cargo. The present platform can find wide applications to the cell-selective cytosolic delivery of diverse proteins in many areas.

  3. LRP-1-mediated intracellular antibody delivery to the Central Nervous System

    NASA Astrophysics Data System (ADS)

    Tian, Xiaohe; Nyberg, Sophie; S. Sharp, Paul; Madsen, Jeppe; Daneshpour, Nooshin; Armes, Steven P.; Berwick, Jason; Azzouz, Mimoun; Shaw, Pamela; Abbott, N. Joan; Battaglia, Giuseppe

    2015-07-01

    The blood-brain barrier (BBB) is by far the most important target in developing new approaches to improve delivery of drugs and diagnostic tools into the Central Nervous System (CNS). Here we report the engineering of pH- sensitive polymersomes (synthetic vesicles formed by amphiphilic copolymers) that exploit endogenous transport mechanisms to traverse the BBB, enabling delivery of large macromolecules into both the CNS parenchyma and CNS cells. We achieve this by targeting the Low Density Lipoprotein Receptor-Related Protein 1 (LRP-1) receptor. We show that LRP-1 is associated with endothelial transcytosis that does not involve acidification of cargo in membrane-trafficking organelles. By contrast, this receptor is also associated with traditional endocytosis in CNS cells, thus aiding the delivery of relevant cargo within their cytosol. We prove this using IgG as a model cargo, thus demonstrating that the combination of appropriate targeting combined with pH-sensitive polymersomes enables the efficient delivery of macromolecules into CNS cells.

  4. Kinetic Limitations of Cooperativity-Based Drug Delivery Systems

    NASA Astrophysics Data System (ADS)

    Licata, Nicholas A.; Tkachenko, Alexei V.

    2008-04-01

    We study theoretically a novel drug delivery system that utilizes the overexpression of certain proteins in cancerous cells for cell-specific chemotherapy. The system consists of dendrimers conjugated with “keys” (ex: folic acid) which “key-lock” bind to particular cell-membrane proteins (ex: folate receptor). The increased concentration of “locks” on the surface leads to a longer residence time for the dendrimer and greater incorporation into the cell. Cooperative binding of the nanocomplexes leads to an enhancement of cell specificity. However, both our theory and detailed analysis of in vitro experiments indicate that the degree of cooperativity is kinetically limited. We demonstrate that cooperativity and hence the specificity to particular cell type can be increased by making the strength of individual bonds weaker, and suggest a particular implementation of this idea.

  5. Docking of the SpaceX Dragon Commercial cargo craft

    NASA Image and Video Library

    2012-10-10

    ISS033-E-011170 (10 Oct. 2012) --- The SpaceX Dragon commercial cargo craft is berthed to the Earth-facing side of the International Space Station's Harmony node. Working from the robotics workstation inside the seven-windowed Cupola, Japan Aerospace Exploration Agency astronaut Aki Hoshide, Expedition 33 flight engineer, with the assistance of NASA astronaut Sunita Williams, commander, captured Dragon at 6:56 a.m. (EDT) and used the Canadarm2 robotic arm to berth Dragon to Harmony Oct. 10, 2012. Dragon is scheduled to spend 18 days attached to the station. During that time, the crew will unload 882 pounds of crew supplies, science research and hardware from the cargo craft and reload it with 1,673 pounds of cargo for return to Earth. After Dragon?s mission at the station is completed, the crew will use Canadarm2 to detach Dragon from Harmony and release it for a splashdown about six hours later in the Pacific Ocean, 250 miles off the coast of southern California. Dragon launched atop a Falcon 9 rocket at 8:35 p.m. Oct. 7 from Cape Canaveral Air Force Station in Florida, beginning NASA's first contracted cargo delivery flight, designated SpaceX CRS-1, to the station.

  6. Functionalized single-walled carbon nanotubes: cellular uptake, biodistribution and applications in drug delivery.

    PubMed

    Li, Zixian; de Barros, Andre Luis Branco; Soares, Daniel Cristian Ferreira; Moss, Sara Nicole; Alisaraie, Laleh

    2017-05-30

    The unique properties of single-walled carbon nanotubes (SWNTs) enable them to play important roles in many fields. One of their functional roles is to transport cargo into cell. SWNTs are able to traverse amphipathic cell membranes due to their large surface area, flexible interactions with cargo, customizable dimensions, and surface chemistry. The cargoes delivered by SWNTs include peptides, proteins, nucleic acids, as well as drug molecules for therapeutic purpose. The drug delivery functions of SWNTs have been explored over the past decade. Many breakthrough studies have shown the high specificity and potency of functionalized SWNT-based drug delivery systems for the treatment of cancers and other diseases. In this review, we discuss different aspects of drug delivery by functionalized SWNT carriers, diving into the cellular uptake mechanisms, biodistribution of the delivery system, and safety concerns on degradation of the carriers. We emphasize the delivery of several common drugs to highlight the recent achievements of SWNT-based drug delivery. Copyright © 2017 Elsevier B.V. All rights reserved.

  7. 49 CFR 392.9 - Inspection of cargo, cargo securement devices and systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...) FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR CARRIER SAFETY REGULATIONS DRIVING OF COMMERCIAL MOTOR VEHICLES General § 392.9 Inspection of cargo, cargo securement devices... drives that commercial motor vehicle; (2) Inspect the cargo and the devices used to secure the cargo...

  8. Optimizing an undulating magnetic microswimmer for cargo towing

    NASA Astrophysics Data System (ADS)

    Or, Yizhar; Gutman, Emiliya

    2015-11-01

    One of the promising applications of robotic microswimmers is towing a cargo for controlled drug delivery, micro-surgery or tumor detection. This capability has been demonstrated by the magnetically-actuated microswimmer of Dreyfus et al. [Nature 2005] in which a red blood cell was attached to a chain of magnetic beads connected by flexible DNA links. A key question is what should be the optimal size of the magnetic tail for towing a given cargo. This question is addressed here for the simplest theoretical model of a magnetic microswimmer under planar undulations - a spherical load connected by a torsion spring to a magnetized rigid slender link. The swimmer's dynamics is formulated assuming negligible hydrodynamic interaction and leading-order expressions for the resulting motion are obtained explicitly under small amplitude approximation. Optimal combinations of magnetic actuation frequency, torsion stiffness, and tail length for maximizing displacement or average speed are obtained. The theoretical results are compared with several reported magnetic microswimmers, and also agree qualitatively with recent results on cargo towing by screw rotation of magnetic helical tails [Walker et al., ACS Nano Letters 2015]. This work is supported by the Israeli Science Foundation (ISF) under Grant No. 567/14.

  9. Drug Release Kinetics and Transport Mechanisms of Non-degradable and Degradable Polymeric Delivery Systems

    PubMed Central

    Fu, Yao; Kao, Weiyuan John

    2010-01-01

    Importance of the field The advancement in material design and engineering has led to the rapid development of novel materials with increasing complexity and functions. Both non-degradable and degradable polymers have found wide applications in the controlled delivery field. Studies on drug release kinetics provide important information into the function of material systems. To elucidate the detailed transport mechanism and the structure-function relationship of a material system, it is critical to bridge the gap between the macroscopic data and the transport behavior at the molecular level. Areas covered in this review The structure and function information of selected non-degradable and degradable polymers have been collected and summarized from literatures published after 1990s. The release kinetics of selected drug compounds from various material systems will be discussed in case studies. Recent progresses in the mathematical models based on different transport mechanisms will be highlighted. What the reader will gain This article aims to provide an overview of structure-function relationships of selected non-degradable and degradable polymers as drug delivery matrices. Take home message Understanding the structure-function relationship of the material system is key to the successful design of a delivery system for a particular application. Moreover, developing complex polymeric matrices requires more robust mathematical models to elucidate the solute transport mechanisms. PMID:20331353

  10. 49 CFR 1544.228 - Access to cargo and cargo screening: Security threat assessments for cargo personnel in the...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... threat assessments for cargo personnel in the United States. 1544.228 Section 1544.228 Transportation... COMMERCIAL OPERATORS Operations § 1544.228 Access to cargo and cargo screening: Security threat assessments... paragraph (b) of this section— (1) Each individual must successfully complete a security threat assessment...

  11. Effect of fuel concentration on cargo transport by a team of Kinesin motors

    NASA Astrophysics Data System (ADS)

    Takshak, Anjneya; Mishra, Nirvantosh; Kulkarni, Aditi; Kunwar, Ambarish

    2017-02-01

    Eukaryotic cells employ specialized proteins called molecular motors for transporting organelles and vesicles from one location to another in a regulated and directed manner. These molecular motors often work collectively in a team while transporting cargos. Molecular motors use cytoplasmic ATP as fuel, which is hydrolyzed to generate mechanical force. While the effect of ATP concentration on cargo transport by single Kinesin motor function is well understood, it is still unexplored, both theoretically and experimentally, how ATP concentration would affect cargo transport by a team of Kinesin motors. For instance, how does fuel concentration affect the travel distances and travel velocities of cargo? How cooperativity of Kinesin motors engaged on a cargo is affected by ATP concentration? To answer these questions, here we develop mechano-chemical models of cargo transport by a team of Kinesin motors. To develop these models we use experimentally-constrained mechano-chemical model of a single Kinesin motor as well as earlier developed mean-field and stochastic models of load sharing for cargo transport. Thus, our new models for cargo transport by a team of Kinesin motors include fuel concentration explicitly, which was not considered in earlier models. We make several interesting predictions which can be tested experimentally. For instance, the travel distances of cargos are very large at limited ATP concentrations in spite of very small travel velocity. Velocities of cargos driven by multiple Kinesin have a Michaelis-Menten dependence on ATP concentration. Similarly, cooperativity among the engaged Kinesin motors on the cargo shows a Michaelis-Menten type dependence, which attains a maximum value near physiological ATP concentrations. Our new results can be potentially useful in controlling artificial nano-molecular shuttles precisely for targeted delivery in various nano-technological applications.

  12. Scatter in Cargo Radiography

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Erin A. Miller; Joseph A. Caggiano; Robert C. Runkle

    As a complement to passive detection systems, radiographic inspection of cargo is an increasingly important tool for homeland security because it has the potential to detect highly attenuating objects associated with special nuclear material or surrounding shielding, in addition to screening for items such as drugs or contraband. Radiographic detection of such threat objects relies on high image contrast between regions of different density and atomic number (Z). Threat detection is affected by scatter of the interrogating beamin the cargo, the radiographic system itself, and the surrounding environment, which degrades image contrast. Here, we estimate the extent to which scattermore » plays a role in radiographic imaging of cargo containers. Stochastic transport simulations were performed to determine the details of the radiography equipment and surrounding environment, which are important in reproducing measured data and to investigate scatter magnitudes for typical cargo. We find that scatter plays a stronger role in cargo radiography than in typicalmedical imaging scenarios, even for low-density cargo, with scatter-toprimary ratios ranging from 0.14 for very low density cargo, to between 0.20 and 0.40 for typical cargo, and higher yet for dense cargo.« less

  13. Lipid based drug delivery systems: Kinetics by SANS

    NASA Astrophysics Data System (ADS)

    Uhríková, D.; Teixeira, J.; Hubčík, L.; Búcsi, A.; Kondela, T.; Murugova, T.; Ivankov, O. I.

    2017-05-01

    N,N-dimethyldodecylamine-N-oxide (C12NO) is a surfactant that may exist either in a neutral or protonated form depending on the pH of aqueous solutions. Using small angle X-ray diffraction (SAXD) we demonstrate structural responsivity of C12NO/dioleoylphospha-tidylethanolamine (DOPE)/DNA complexes designed as pH sensitive gene delivery vectors. Small angle neutron scattering (SANS) was employed to follow kinetics of C12NO protonization and DNA binding into C12NO/DOPE/DNA complexes in solution of 150 mM NaCl at acidic condition. SANS data analyzed using paracrystal lamellar model show the formation of complexes with stacking up to ∼32 bilayers, spacing ∼ 62 Å, and lipid bilayer thickness ∼37 Å in 3 minutes after changing pH from 7 to 4. Subsequent structural reorganization of the complexes was observed along 90 minutes of SANS mesurements.

  14. Mechanized azobenzene-functionalized zirconium metal-organic framework for on-command cargo release.

    PubMed

    Meng, Xiangshi; Gui, Bo; Yuan, Daqiang; Zeller, Matthias; Wang, Cheng

    2016-08-01

    Stimuli-responsive metal-organic frameworks (MOFs) have gained increasing attention recently for their potential applications in many areas. We report the design and synthesis of a water-stable zirconium MOF (Zr-MOF) that bears photoresponsive azobenzene groups. This particular MOF can be used as a reservoir for storage of cargo in water, and the cargo-loaded MOF can be further capped to construct a mechanized MOF through the binding of β-cyclodextrin with the azobenzene stalks on the MOF surface. The resulting mechanized MOF has shown on-command cargo release triggered by ultraviolet irradiation or addition of competitive agents without premature release. This study represents a simple approach to the construction of stimuli-responsive mechanized MOFs, and considering mechanized UiO-68-azo made from biocompatible components, this smart system may provide a unique MOF platform for on-command drug delivery in the future.

  15. Mechanized azobenzene-functionalized zirconium metal-organic framework for on-command cargo release

    PubMed Central

    Meng, Xiangshi; Gui, Bo; Yuan, Daqiang; Zeller, Matthias; Wang, Cheng

    2016-01-01

    Stimuli-responsive metal-organic frameworks (MOFs) have gained increasing attention recently for their potential applications in many areas. We report the design and synthesis of a water-stable zirconium MOF (Zr-MOF) that bears photoresponsive azobenzene groups. This particular MOF can be used as a reservoir for storage of cargo in water, and the cargo-loaded MOF can be further capped to construct a mechanized MOF through the binding of β-cyclodextrin with the azobenzene stalks on the MOF surface. The resulting mechanized MOF has shown on-command cargo release triggered by ultraviolet irradiation or addition of competitive agents without premature release. This study represents a simple approach to the construction of stimuli-responsive mechanized MOFs, and considering mechanized UiO-68-azo made from biocompatible components, this smart system may provide a unique MOF platform for on-command drug delivery in the future. PMID:27493996

  16. Plant viruses and bacteriophages for drug delivery in medicine and biotechnology.

    PubMed

    Czapar, Anna E; Steinmetz, Nicole F

    2017-06-01

    There are a wide variety of synthetic and naturally occurring nanomaterials under development for nanoscale cargo-delivery applications. Viruses play a special role in these developments, because they can be regarded as naturally occurring nanomaterials evolved to package and deliver cargos. While any nanomaterial has its advantage and disadvantages, viral nanoparticles (VNPs), in particular the ones derived from plant viruses and bacteriophages, are attractive options for cargo-delivery as they are biocompatible, biodegradable, and non-infectious to mammals. Their protein-based structures are often understood at atomic resolution and are amenable to modification with atomic-level precision through chemical and genetic engineering. Here we present a focused review of the emerging technology development of plant viruses and bacteriophages targeting human health and agricultural applications. Key target areas of development are their use in chemotherapy, photodynamic therapy, pesticide-delivery, gene therapy, vaccine carriers, and immunotherapy. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. A Novel Multilayered RFID Tagged Cargo Integrity Assurance Scheme

    PubMed Central

    Yang, Ming Hour; Luo, Jia Ning; Lu, Shao Yong

    2015-01-01

    To minimize cargo theft during transport, mobile radio frequency identification (RFID) grouping proof methods are generally employed to ensure the integrity of entire cargo loads. However, conventional grouping proofs cannot simultaneously generate grouping proofs for a specific group of RFID tags. The most serious problem of these methods is that nonexistent tags are included in the grouping proofs because of the considerable amount of time it takes to scan a high number of tags. Thus, applying grouping proof methods in the current logistics industry is difficult. To solve this problem, this paper proposes a method for generating multilayered offline grouping proofs. The proposed method provides tag anonymity; moreover, resolving disputes between recipients and transporters over the integrity of cargo deliveries can be expedited by generating grouping proofs and automatically authenticating the consistency between the receipt proof and pick proof. The proposed method can also protect against replay attacks, multi-session attacks, and concurrency attacks. Finally, experimental results verify that, compared with other methods for generating grouping proofs, the proposed method can efficiently generate offline grouping proofs involving several parties in a supply chain using mobile RFID. PMID:26512673

  18. APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

    PubMed Central

    Kalaidzidis, Inna; Miaczynska, Marta; Brewińska-Olchowik, Marta; Hupalowska, Anna; Ferguson, Charles; Parton, Robert G.; Kalaidzidis, Yannis

    2015-01-01

    Endocytosis allows cargo to enter a series of specialized endosomal compartments, beginning with early endosomes harboring Rab5 and its effector EEA1. There are, however, additional structures labeled by the Rab5 effector APPL1 whose role in endocytic transport remains unclear. It has been proposed that APPL1 vesicles are transport intermediates that convert into EEA1 endosomes. Here, we tested this model by analyzing the ultrastructural morphology, kinetics of cargo transport, and stability of the APPL1 compartment over time. We found that APPL1 resides on a tubulo-vesicular compartment that is capable of sorting cargo for recycling or degradation and that displays long lifetimes, all features typical of early endosomes. Fitting mathematical models to experimental data rules out maturation of APPL1 vesicles into EEA1 endosomes as a primary mechanism for cargo transport. Our data suggest instead that APPL1 endosomes represent a distinct population of Rab5-positive sorting endosomes, thus providing important insights into the compartmental organization of the early endocytic pathway. PMID:26459602

  19. Electrostatically assembled dendrimer complex with a high-affinity protein binder for targeted gene delivery.

    PubMed

    Kim, Jong-Won; Lee, Joong-Jae; Choi, Joon Sig; Kim, Hak-Sung

    2018-06-10

    Although a variety of non-viral gene delivery systems have been developed, they still suffer from low efficiency and specificity. Herein, we present the assembly of a dendrimer complex comprising a DNA cargo and a targeting moiety as a new format for targeted gene delivery. A PAMAM dendrimer modified with histidine and arginine (HR-dendrimer) was used to enhance the endosomal escape and transfection efficiency. An EGFR-specific repebody, composed of leucine-rich repeat (LRR) modules, was employed as a targeting moiety. A polyanionic peptide was genetically fused to the repebody, followed by incubation with an HR-dendrimer and a DNA cargo to assemble the dendrimer complex through an electrostatic interaction. The resulting dendrimer complex was shown to deliver a DNA cargo with high efficiency in a receptor-specific manner. An analysis using a confocal microscope confirmed the internalization of the dendrimer complex and subsequent dissociation of a DNA cargo from the complex. The present approach can be broadly used in a targeted gene delivery in many areas. Copyright © 2018 Elsevier B.V. All rights reserved.

  20. Wisconsin Air Cargo Study

    DOT National Transportation Integrated Search

    2011-04-01

    Air cargo is a key economic lifeline for the communities that have airports. Manufacturers, businesses, hospitals and : other community cornerstone employers depend on air cargo to successfully operate. While there is no doubt that air : cargo repres...

  1. A fluid membrane enhances the velocity of cargo transport by small teams of kinesin-1

    NASA Astrophysics Data System (ADS)

    Li, Qiaochu; Tseng, Kuo-Fu; King, Stephen J.; Qiu, Weihong; Xu, Jing

    2018-03-01

    Kinesin-1 (hereafter referred to as kinesin) is a major microtubule-based motor protein for plus-end-directed intracellular transport in live cells. While the single-molecule functions of kinesin are well characterized, the physiologically relevant transport of membranous cargos by small teams of kinesins remains poorly understood. A key experimental challenge remains in the quantitative control of the number of motors driving transport. Here we utilized "motile fraction" to overcome this challenge and experimentally accessed transport by a single kinesin through the physiologically relevant transport by a small team of kinesins. We used a fluid lipid bilayer to model the cellular membrane in vitro and employed optical trapping to quantify the transport of membrane-enclosed cargos versus traditional membrane-free cargos under identical conditions. We found that coupling motors via a fluid membrane significantly enhances the velocity of cargo transport by small teams of kinesins. Importantly, enclosing a cargo in a fluid lipid membrane did not impact single-kinesin transport, indicating that membrane-dependent velocity enhancement for team-based transport arises from altered interactions between kinesins. Our study demonstrates that membrane-based coupling between motors is a key determinant of kinesin-based transport. Enhanced velocity may be critical for fast delivery of cargos in live cells.

  2. 46 CFR 150.130 - Loading a cargo on vessels carrying cargoes with which it is incompatible.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Loading a cargo on vessels carrying cargoes with which it is incompatible. 150.130 Section 150.130 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.130 Loading a cargo on vessels...

  3. 46 CFR 150.130 - Loading a cargo on vessels carrying cargoes with which it is incompatible.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Loading a cargo on vessels carrying cargoes with which it is incompatible. 150.130 Section 150.130 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.130 Loading a cargo on vessels...

  4. 46 CFR 150.130 - Loading a cargo on vessels carrying cargoes with which it is incompatible.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Loading a cargo on vessels carrying cargoes with which it is incompatible. 150.130 Section 150.130 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.130 Loading a cargo on vessels...

  5. 46 CFR 150.130 - Loading a cargo on vessels carrying cargoes with which it is incompatible.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Loading a cargo on vessels carrying cargoes with which it is incompatible. 150.130 Section 150.130 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.130 Loading a cargo on vessels...

  6. 46 CFR 154.901 - Atmospheric control within cargo tanks and cargo piping systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Atmospheric control within cargo tanks and cargo piping systems. 154.901 Section 154.901 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN..., Construction and Equipment Atmospheric Control in Cargo Containment Systems § 154.901 Atmospheric control...

  7. 46 CFR 154.901 - Atmospheric control within cargo tanks and cargo piping systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Atmospheric control within cargo tanks and cargo piping systems. 154.901 Section 154.901 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN..., Construction and Equipment Atmospheric Control in Cargo Containment Systems § 154.901 Atmospheric control...

  8. 46 CFR 154.901 - Atmospheric control within cargo tanks and cargo piping systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Atmospheric control within cargo tanks and cargo piping systems. 154.901 Section 154.901 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN..., Construction and Equipment Atmospheric Control in Cargo Containment Systems § 154.901 Atmospheric control...

  9. 46 CFR 154.901 - Atmospheric control within cargo tanks and cargo piping systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Atmospheric control within cargo tanks and cargo piping systems. 154.901 Section 154.901 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN..., Construction and Equipment Atmospheric Control in Cargo Containment Systems § 154.901 Atmospheric control...

  10. 46 CFR 154.901 - Atmospheric control within cargo tanks and cargo piping systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Atmospheric control within cargo tanks and cargo piping systems. 154.901 Section 154.901 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN..., Construction and Equipment Atmospheric Control in Cargo Containment Systems § 154.901 Atmospheric control...

  11. 46 CFR 153.908 - Cargo viscosity and melting point information; measuring cargo temperature during discharge...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo viscosity and melting point information; measuring... Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories... lading, a written statement of the following: (1) For Category A or B NLS, the cargo's viscosity at 20 °C...

  12. 46 CFR 153.908 - Cargo viscosity and melting point information; measuring cargo temperature during discharge...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo viscosity and melting point information; measuring... Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories... lading, a written statement of the following: (1) For Category A or B NLS, the cargo's viscosity at 20 °C...

  13. 46 CFR 153.908 - Cargo viscosity and melting point information; measuring cargo temperature during discharge...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo viscosity and melting point information; measuring... Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories... lading, a written statement of the following: (1) For Category A or B NLS, the cargo's viscosity at 20 °C...

  14. Nanovehicular Intracellular Delivery Systems

    PubMed Central

    PROKOP, ALES; DAVIDSON, JEFFREY M.

    2013-01-01

    This article provides an overview of principles and barriers relevant to intracellular drug and gene transport, accumulation and retention (collectively called as drug delivery) by means of nanovehicles (NV). The aim is to deliver a cargo to a particular intracellular site, if possible, to exert a local action. Some of the principles discussed in this article apply to noncolloidal drugs that are not permeable to the plasma membrane or to the blood–brain barrier. NV are defined as a wide range of nanosized particles leading to colloidal objects which are capable of entering cells and tissues and delivering a cargo intracelullarly. Different localization and targeting means are discussed. Limited discussion on pharmacokinetics and pharmacodynamics is also presented. NVs are contrasted to micro-delivery and current nanotechnologies which are already in commercial use. Newer developments in NV technologies are outlined and future applications are stressed. We also briefly review the existing modeling tools and approaches to quantitatively describe the behavior of targeted NV within the vascular and tumor compartments, an area of particular importance. While we list “elementary” phenomena related to different level of complexity of delivery to cancer, we also stress importance of multi-scale modeling and bottom-up systems biology approach. PMID:18200527

  15. Smart Nanostructures for Cargo Delivery: Uncaging and Activating by Light

    PubMed Central

    Karimi, Mahdi; Zangabad, Parham Sahandi; Baghaee-Ravari, Soodeh; Ghazadeh, Mehdi; Mirshekari, Hamid; Hamblin, Michael R.

    2017-01-01

    Nanotechnology has begun to play a remarkable role in various fields of science and technology. In biomedical applications, nanoparticles have opened new horizons, especially for biosensing, targeted delivery of therapeutics, and so forth. Among drug delivery systems (DDSs), smart nanocarriers that respond to specific stimuli in their environment represent a growing field. Nanoplatforms that can be activated by an external application of light can be used for a wide variety of photoactivated therapies, especially light-triggered DDSs, relying on photoisomerization, photo-cross-linking/un-cross-linking, photoreduction, and so forth. In addition, light activation has potential in photodynamic therapy, photothermal therapy, radiotherapy, protected delivery of bioactive moieties, anticancer drug delivery systems, and theranostics (i.e., real-time monitoring and tracking combined with a therapeutic action to different diseases sites and organs). Combinations of these approaches can lead to enhanced and synergistic therapies, employing light as a trigger or for activation. Nonlinear light absorption mechanisms such as two-photon absorption and photon upconversion have been employed in the design of light-responsive DDSs. The integration of a light stimulus into dual/multiresponsive nanocarriers can provide spatiotemporal controlled delivery and release of therapeutic agents, targeted and controlled nanosystems, combined delivery of two or more agents, their on-demand release under specific conditions, and so forth. Overall, light-activated nanomedicines and DDSs are expected to provide more effective therapies against serious diseases such as cancers, inflammation, infections, and cardiovascular disease with reduced side effects and will open new doors toward the treatment of patients worldwide. PMID:28192672

  16. Smart Nanostructures for Cargo Delivery: Uncaging and Activating by Light.

    PubMed

    Karimi, Mahdi; Sahandi Zangabad, Parham; Baghaee-Ravari, Soodeh; Ghazadeh, Mehdi; Mirshekari, Hamid; Hamblin, Michael R

    2017-04-05

    Nanotechnology has begun to play a remarkable role in various fields of science and technology. In biomedical applications, nanoparticles have opened new horizons, especially for biosensing, targeted delivery of therapeutics, and so forth. Among drug delivery systems (DDSs), smart nanocarriers that respond to specific stimuli in their environment represent a growing field. Nanoplatforms that can be activated by an external application of light can be used for a wide variety of photoactivated therapies, especially light-triggered DDSs, relying on photoisomerization, photo-cross-linking/un-cross-linking, photoreduction, and so forth. In addition, light activation has potential in photodynamic therapy, photothermal therapy, radiotherapy, protected delivery of bioactive moieties, anticancer drug delivery systems, and theranostics (i.e., real-time monitoring and tracking combined with a therapeutic action to different diseases sites and organs). Combinations of these approaches can lead to enhanced and synergistic therapies, employing light as a trigger or for activation. Nonlinear light absorption mechanisms such as two-photon absorption and photon upconversion have been employed in the design of light-responsive DDSs. The integration of a light stimulus into dual/multiresponsive nanocarriers can provide spatiotemporal controlled delivery and release of therapeutic agents, targeted and controlled nanosystems, combined delivery of two or more agents, their on-demand release under specific conditions, and so forth. Overall, light-activated nanomedicines and DDSs are expected to provide more effective therapies against serious diseases such as cancers, inflammation, infections, and cardiovascular disease with reduced side effects and will open new doors toward the treatment of patients worldwide.

  17. Dynamics of topological solitons, knotted streamlines, and transport of cargo in liquid crystals

    NASA Astrophysics Data System (ADS)

    Sohn, Hayley R. O.; Ackerman, Paul J.; Boyle, Timothy J.; Sheetah, Ghadah H.; Fornberg, Bengt; Smalyukh, Ivan I.

    2018-05-01

    Active colloids and liquid crystals are capable of locally converting the macroscopically supplied energy into directional motion and promise a host of new applications, ranging from drug delivery to cargo transport at the mesoscale. Here we uncover how topological solitons in liquid crystals can locally transform electric energy to translational motion and allow for the transport of cargo along directions dependent on frequency of the applied electric field. By combining polarized optical video microscopy and numerical modeling that reproduces both the equilibrium structures of solitons and their temporal evolution in applied fields, we uncover the physical underpinnings behind this reconfigurable motion and study how it depends on the structure and topology of solitons. We show that, unexpectedly, the directional motion of solitons with and without the cargo arises mainly from the asymmetry in rotational dynamics of molecular ordering in liquid crystal rather than from the asymmetry of fluid flows, as in conventional active soft matter systems.

  18. AND logic-like pH- and light-dual controlled drug delivery by surface modified mesoporous silica nanoparticles.

    PubMed

    Zhao, Junwei; He, Zhaoshuai; Li, Biao; Cheng, Tanyu; Liu, Guohua

    2017-04-01

    Recently, the controlled drug delivery system has become a potential platform for biomedical application. Herein, we developed a pH and light-dual controlled cargo release system exhibiting AND logic based on MCM-41 mesoporous silica nanoparticles, which was surface modified using β-cyclodextrin (β-CD) with imine bond and azobenzene derivative. The complex of β-CD and azobenzene derivative effectively blocked the cargo delivery in pH=7.0 phosphate buffered saline (PBS) solution without 365nm UV light irradiation. The cargo was fully released when both factors of acidic environment (pH=5.0 PBS) and 365nm UV light irradiation were satisfied, meanwhile only very little cargo was delivered if one factor was satisfied. The result also demonstrates that the opening/closing of the gate and the release of the cargo in small portions can be controlled. Copyright © 2016 Elsevier B.V. All rights reserved.

  19. Airlift Cargo Hub Port Hold Times: Controlling Variations in Defense Supply Chain Delivery

    DTIC Science & Technology

    2010-06-01

    AIR UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright-Patterson Air Force Base, Ohio APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED...Department of Operational Sciences Graduate School of Engineering and Management Air Force Institute of Technology Air University Air...process for a seamless flow of cargo onto the aircraft segment (AMC and DDC , 24 Sep 08). Figure 6 AMC Velocity Efforts (Anderson D. , 2009) While

  20. Air Cargo Marketing Development

    NASA Technical Reports Server (NTRS)

    Kersey, J. W.

    1972-01-01

    The factors involved in developing a market for air cargo services are discussed. A comparison is made between the passenger traffic problems and those of cargo traffic. Emphasis is placed on distribution analyses which isolates total distribution cost, including logistical costs such as transportation, inventory, materials handling, packaging, and processing. Specific examples of methods for reducing air cargo costs are presented.

  1. Aerial Logistics Management for Carrier Onboard Delivery

    DTIC Science & Technology

    2016-09-01

    aircraft , which is designated by the Navy to replace C-2A Greyhound for COD mission in the near future. Unlike the C-2A, which has been supporting the COD...delivery (COD) is the use of aircraft to transport people and cargo from a forward logistics site (FLS) to a carrier strike group (CSG). The goal of...Our simulation results indicate that, with two C-2A aircraft currently used by the Navy, real-time cargo tracking can reduce the delay of high

  2. GFP-complementation assay to detect functional CPP and protein delivery into living cells

    PubMed Central

    Milech, Nadia; Longville, Brooke AC; Cunningham, Paula T; Scobie, Marie N; Bogdawa, Heique M; Winslow, Scott; Anastasas, Mark; Connor, Theresa; Ong, Ferrer; Stone, Shane R; Kerfoot, Maria; Heinrich, Tatjana; Kroeger, Karen M; Tan, Yew-Foon; Hoffmann, Katrin; Thomas, Wayne R; Watt, Paul M; Hopkins, Richard M

    2015-01-01

    Efficient cargo uptake is essential for cell-penetrating peptide (CPP) therapeutics, which deliver widely diverse cargoes by exploiting natural cell processes to penetrate the cell’s membranes. Yet most current CPP activity assays are hampered by limitations in assessing uptake, including confounding effects of conjugated fluorophores or ligands, indirect read-outs requiring secondary processing, and difficulty in discriminating internalization from endosomally trapped cargo. Split-complementation Endosomal Escape (SEE) provides the first direct assay visualizing true cytoplasmic-delivery of proteins at biologically relevant concentrations. The SEE assay has minimal background, is amenable to high-throughput processes, and adaptable to different transient and stable cell lines. This split-GFP-based platform can be useful to study transduction mechanisms, cellular imaging, and characterizing novel CPPs as pharmaceutical delivery agents in the treatment of disease. PMID:26671759

  3. Targeting transferrin receptors at the blood-brain barrier improves the uptake of immunoliposomes and subsequent cargo transport into the brain parenchyma.

    PubMed

    Johnsen, Kasper Bendix; Burkhart, Annette; Melander, Fredrik; Kempen, Paul Joseph; Vejlebo, Jonas Bruun; Siupka, Piotr; Nielsen, Morten Schallburg; Andresen, Thomas Lars; Moos, Torben

    2017-09-04

    Drug delivery to the brain is hampered by the presence of the blood-brain barrier, which excludes most molecules from freely diffusing into the brain, and tightly regulates the active transport mechanisms that ensure sufficient delivery of nutrients to the brain parenchyma. Harnessing the possibility of delivering neuroactive drugs by way of receptors already present on the brain endothelium has been of interest for many years. The transferrin receptor is of special interest since its expression is limited to the endothelium of the brain as opposed to peripheral endothelium. Here, we investigate the possibility of delivering immunoliposomes and their encapsulated cargo to the brain via targeting of the transferrin receptor. We find that transferrin receptor-targeting increases the association between the immunoliposomes and primary endothelial cells in vitro, but that this does not correlate with increased cargo transcytosis. Furthermore, we show that the transferrin receptor-targeted immunoliposomes accumulate along the microvessels of the brains of rats, but find no evidence for transcytosis of the immunoliposome. Conversely, the increased accumulation correlated both with increased cargo uptake in the brain endothelium and subsequent cargo transport into the brain. These findings suggest that transferrin receptor-targeting is a relevant strategy of increasing drug exposure to the brain.

  4. 46 CFR 153.907 - Cargo information.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... exposed to the cargo. (7) A list of fire fighting procedures and extinguishing agents effective with cargo fires. (8) Shipper's name. (9) Loading point. (10) Approximate quantity of cargo. (11) Tank in which the... of these two tables. (2) The name of the cargo prescribed in the letter authorizing carriage of the...

  5. 46 CFR 153.907 - Cargo information.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... exposed to the cargo. (7) A list of fire fighting procedures and extinguishing agents effective with cargo fires. (8) Shipper's name. (9) Loading point. (10) Approximate quantity of cargo. (11) Tank in which the... of these two tables. (2) The name of the cargo prescribed in the letter authorizing carriage of the...

  6. 46 CFR 153.907 - Cargo information.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... exposed to the cargo. (7) A list of fire fighting procedures and extinguishing agents effective with cargo fires. (8) Shipper's name. (9) Loading point. (10) Approximate quantity of cargo. (11) Tank in which the... of these two tables. (2) The name of the cargo prescribed in the letter authorizing carriage of the...

  7. Biodegradable "Smart" Polyphosphazenes with Intrinsic Multifunctionality as Intracellular Protein Delivery Vehicles.

    PubMed

    Martinez, Andre P; Qamar, Bareera; Fuerst, Thomas R; Muro, Silvia; Andrianov, Alexander K

    2017-06-12

    A series of biodegradable drug delivery polymers with intrinsic multifunctionality have been designed and synthesized utilizing a polyphosphazene macromolecular engineering approach. Novel water-soluble polymers, which contain carboxylic acid and pyrrolidone moieties attached to an inorganic phosphorus-nitrogen backbone, were characterized by a suite of physicochemical methods to confirm their structure, composition, and molecular sizes. All synthesized polyphosphazenes displayed composition-dependent hydrolytic degradability in aqueous solutions at neutral pH. Their formulations were stable at lower temperatures, potentially indicating adequate shelf life, but were characterized by accelerated degradation kinetics at elevated temperatures, including 37 °C. It was found that synthesized polyphosphazenes are capable of environmentally triggered self-assembly to produce nanoparticles with narrow polydispersity in the size range of 150-700 nm. Protein loading capacity of copolymers has been validated via their ability to noncovalently bind avidin without altering biological functionality. Acid-induced membrane-disruptive activity of polyphosphazenes has been established with an onset corresponding to the endosomal pH range and being dependent on polymer composition. The synthesized polyphosphazenes facilitated cell-surface interactions followed by time-dependent, vesicular-mediated, and saturable internalization of a model protein cargo into cancer cells, demonstrating the potential for intracellular delivery.

  8. 46 CFR 154.235 - Cargo tank location.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo tank location. 154.235 Section 154.235 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS... Survival Capability and Cargo Tank Location § 154.235 Cargo tank location. (a) For type IG hulls, cargo...

  9. Efficient delivery of genome-editing proteins using bioreducible lipid nanoparticles.

    PubMed

    Wang, Ming; Zuris, John A; Meng, Fantao; Rees, Holly; Sun, Shuo; Deng, Pu; Han, Yong; Gao, Xue; Pouli, Dimitra; Wu, Qi; Georgakoudi, Irene; Liu, David R; Xu, Qiaobing

    2016-03-15

    A central challenge to the development of protein-based therapeutics is the inefficiency of delivery of protein cargo across the mammalian cell membrane, including escape from endosomes. Here we report that combining bioreducible lipid nanoparticles with negatively supercharged Cre recombinase or anionic Cas9:single-guide (sg)RNA complexes drives the electrostatic assembly of nanoparticles that mediate potent protein delivery and genome editing. These bioreducible lipids efficiently deliver protein cargo into cells, facilitate the escape of protein from endosomes in response to the reductive intracellular environment, and direct protein to its intracellular target sites. The delivery of supercharged Cre protein and Cas9:sgRNA complexed with bioreducible lipids into cultured human cells enables gene recombination and genome editing with efficiencies greater than 70%. In addition, we demonstrate that these lipids are effective for functional protein delivery into mouse brain for gene recombination in vivo. Therefore, the integration of this bioreducible lipid platform with protein engineering has the potential to advance the therapeutic relevance of protein-based genome editing.

  10. On the intracellular release mechanism of hydrophobic cargo and its relation to the biodegradation behavior of mesoporous silica nanocarriers.

    PubMed

    von Haartman, Eva; Lindberg, Desiré; Prabhakar, Neeraj; Rosenholm, Jessica M

    2016-12-01

    The intracellular release mechanism of hydrophobic molecules from surface-functionalized mesoporous silica nanoparticles was studied in relation to the biodegradation behavior of the nanocarrier, with the purpose of determining the dominant release mechanism for the studied drug delivery system. To be able to follow the real-time intracellular release, a hydrophobic fluorescent dye was used as model drug molecule. The in vitro release of the dye was investigated under varying conditions in terms of pH, polarity, protein and lipid content, presence of hydrophobic structures and ultimately, in live cancer cells. Results of investigating the drug delivery system show that the degradation and drug release mechanisms display a clear interdependency in simple aqueous solvents. In pure aqueous media, the cargo release was primarily dependent on the degradation of the nanocarrier, while in complex media, mimicking intracellular conditions, the physicochemical properties of the cargo molecule itself and its interaction with the carrier and/or surrounding media were found to be the main release-governing factors. Since the material degradation was retarded upon loading with hydrophobic guest molecules, the cargo could be efficiently delivered into live cancer cells and released intracellularly without pronounced premature release under extracellular conditions. From a rational design point of view, pinpointing the interdependency between these two processes can be of paramount importance considering future applications and fundamental understanding of the drug delivery system. Copyright © 2016 Elsevier B.V. All rights reserved.

  11. A cargo-sorting DNA robot.

    PubMed

    Thubagere, Anupama J; Li, Wei; Johnson, Robert F; Chen, Zibo; Doroudi, Shayan; Lee, Yae Lim; Izatt, Gregory; Wittman, Sarah; Srinivas, Niranjan; Woods, Damien; Winfree, Erik; Qian, Lulu

    2017-09-15

    Two critical challenges in the design and synthesis of molecular robots are modularity and algorithm simplicity. We demonstrate three modular building blocks for a DNA robot that performs cargo sorting at the molecular level. A simple algorithm encoding recognition between cargos and their destinations allows for a simple robot design: a single-stranded DNA with one leg and two foot domains for walking, and one arm and one hand domain for picking up and dropping off cargos. The robot explores a two-dimensional testing ground on the surface of DNA origami, picks up multiple cargos of two types that are initially at unordered locations, and delivers them to specified destinations until all molecules are sorted into two distinct piles. The robot is designed to perform a random walk without any energy supply. Exploiting this feature, a single robot can repeatedly sort multiple cargos. Localization on DNA origami allows for distinct cargo-sorting tasks to take place simultaneously in one test tube or for multiple robots to collectively perform the same task. Copyright © 2017, American Association for the Advancement of Science.

  12. The Economics of Air Cargo

    NASA Technical Reports Server (NTRS)

    Kersey, J. W.

    1972-01-01

    The economic factors involved in air cargo operations and air cargo marketing development are discussed. Specific steps which are followed by various airports to reduce operating costs are described. The economics of cargo handling within an airline are analyzed with respect to: (1) paperwork costs, (2) terminal costs, (3) line haul costs, and (4) claims costs.

  13. Application of time-resolved fluorescence for direct and continuous probing of release from polymeric delivery vehicles.

    PubMed

    Viger, Mathieu L; Sheng, Wangzhong; McFearin, Cathryn L; Berezin, Mikhail Y; Almutairi, Adah

    2013-11-10

    Though accurately evaluating the kinetics of release is critical for validating newly designed therapeutic carriers for in vivo applications, few methods yet exist for release measurement in real time and without the need for any sample preparation. Many of the current approaches (e.g. chromatographic methods, absorption spectroscopy, or NMR spectroscopy) rely on isolation of the released material from the loaded vehicles, which require additional sample purification and can lead to loss of accuracy when probing fast kinetics of release. In this study we describe the use of time-resolved fluorescence for in situ monitoring of small molecule release kinetics from biodegradable polymeric drug delivery systems. This method relies on the observation that fluorescent reporters being released from polymeric drug delivery systems possess distinct excited-state lifetime components, reflecting their different environments in the particle suspensions, i.e., confined in the polymer matrices or free in the aqueous environment. These distinct lifetimes enable real-time quantitative mapping of the relative concentrations of dye in each population to obtain precise and accurate temporal information on the release profile of particular carrier/payload combinations. We found that fluorescence lifetime better distinguishes subtle differences in release profiles (e.g. differences associated with dye loading) than conventional steady-state fluorescence measurements, which represent the averaged dye behavior over the entire scan. Given the method's applicability to both hydrophobic and hydrophilic cargo, it could be employed to model the release of any drug-carrier combination. Copyright © 2013 Elsevier B.V. All rights reserved.

  14. Kinetic regulation of coated vesicle secretion

    PubMed Central

    Foret, Lionel; Sens, Pierre

    2008-01-01

    The secretion of vesicles for intracellular transport often relies on the aggregation of specialized membrane-bound proteins into a coat able to curve cell membranes. The nucleation and growth of a protein coat is a kinetic process that competes with the energy-consuming turnover of coat components between the membrane and the cytosol. We propose a generic kinetic description of coat assembly and the formation of coated vesicles and discuss its implication to the dynamics of COP vesicles that traffic within the Golgi and with the endoplasmic reticulum. We show that stationary coats of fixed area emerge from the competition between coat growth and the recycling of coat components, in a fashion resembling the treadmilling of cytoskeletal filaments. We further show that the turnover of coat components allows for a highly sensitive switching mechanism between a quiescent and a vesicle producing membrane, upon a slowing down of the exchange kinetics. We claim that the existence of this switching behavior, also triggered by factors, such as the presence of cargo and variation of the membrane mechanical tension, allows for efficient regulation of vesicle secretion. We propose a model, supported by different experimental observations, in which vesiculation of secretory membranes is impaired by the energy-consuming desorption of coat proteins, until the presence of cargo or other factors triggers a dynamical switch into a vesicle producing state. PMID:18824695

  15. Reconstituting the motility of isolated intracellular cargoes.

    PubMed

    Hendricks, Adam G; Goldman, Yale E; Holzbaur, Erika L F

    2014-01-01

    Kinesin, dynein, and myosin transport intracellular cargoes including organelles, membrane-bound vesicles, and mRNA along the cytoskeleton. These motor proteins work collectively in teams to transport cargoes over long distances and navigate around obstacles in the cell. In addition, several types of motors often interact on the same cargo to allow bidirectional transport and switching between the actin and microtubule networks. To examine transport of native cargoes in a simplified in vitro system, techniques have been developed to isolate endogenous cargoes and reconstitute their motility. Isolated cargoes can be tracked and manipulated with high precision using total internal reflection fluorescence microscopy and optical trapping. Through use of native cargoes, we can examine vesicular transport in a minimal system while retaining endogenous motor stoichiometry and the biochemical and mechanical characteristics of both motor and cargo. © 2014 Elsevier Inc. All rights reserved.

  16. Scatter in Cargo Radiography

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Miller, Erin A.; Caggiano, Joseph A.; Runkle, Robert C.

    As a complement to passive detection systems, radiographic inspection of cargo is an increasingly important tool for homeland security because it has the potential to detect highly attenuating objects associated with special nuclear material or surrounding shielding. Detecting such objects relies on high image contrast between regions of different density and atomic number (Z). Threat detection is affected by scatter of the interrogating beam, both in the cargo and surrounding objects, which degrades image contrast. Here, we work to determine the extent to which scatter plays a role in radiographic imaging of cargo containers.

  17. 46 CFR 154.1831 - Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... in bulk or a cool-down, warm-up, gas-free, or air-out of each cargo tank; (2) Each transfer of liquid cargo in bulk, and each cool-down, warm-up, gas-free, or air-out of a cargo tank, is supervised by a... in bulk or a cool-down, warm-up, gas-free, or air-out of a cargo tank possesses the qualifications...

  18. 46 CFR 154.1831 - Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... in bulk or a cool-down, warm-up, gas-free, or air-out of each cargo tank; (2) Each transfer of liquid cargo in bulk, and each cool-down, warm-up, gas-free, or air-out of a cargo tank, is supervised by a... in bulk or a cool-down, warm-up, gas-free, or air-out of a cargo tank possesses the qualifications...

  19. 46 CFR 154.1831 - Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... in bulk or a cool-down, warm-up, gas-free, or air-out of each cargo tank; (2) Each transfer of liquid cargo in bulk, and each cool-down, warm-up, gas-free, or air-out of a cargo tank, is supervised by a... in bulk or a cool-down, warm-up, gas-free, or air-out of a cargo tank possesses the qualifications...

  20. 46 CFR 154.1831 - Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... in bulk or a cool-down, warm-up, gas-free, or air-out of each cargo tank; (2) Each transfer of liquid cargo in bulk, and each cool-down, warm-up, gas-free, or air-out of a cargo tank, is supervised by a... in bulk or a cool-down, warm-up, gas-free, or air-out of a cargo tank possesses the qualifications...

  1. Polymers for Drug Delivery Systems

    PubMed Central

    Liechty, William B.; Kryscio, David R.; Slaughter, Brandon V.; Peppas, Nicholas A.

    2012-01-01

    Polymers have played an integral role in the advancement of drug delivery technology by providing controlled release of therapeutic agents in constant doses over long periods, cyclic dosage, and tunable release of both hydrophilic and hydrophobic drugs. From early beginnings using off-the-shelf materials, the field has grown tremendously, driven in part by the innovations of chemical engineers. Modern advances in drug delivery are now predicated upon the rational design of polymers tailored for specific cargo and engineered to exert distinct biological functions. In this review, we highlight the fundamental drug delivery systems and their mathematical foundations and discuss the physiological barriers to drug delivery. We review the origins and applications of stimuli-responsive polymer systems and polymer therapeutics such as polymer-protein and polymer-drug conjugates. The latest developments in polymers capable of molecular recognition or directing intracellular delivery are surveyed to illustrate areas of research advancing the frontiers of drug delivery. PMID:22432577

  2. Packaging biological cargoes in mesoporous materials: opportunities for drug delivery.

    PubMed

    Siefker, Justin; Karande, Pankaj; Coppens, Marc-Olivier

    2014-11-01

    Confinement of biomolecules in structured nanoporous materials offers several desirable features ranging from chemical and thermal stability, to resistance to degradation from the external environment. A new generation of mesoporous materials presents exciting new possibilities for the formulation and controlled release of biological agents. Such materials address niche applications in enteral and parenteral delivery of biologics, such as peptides, polypeptides, enzymes and proteins for use as therapeutics, imaging agents, biosensors, and adjuvants. Mesoporous silica Santa Barbara Amorphous-15 (SBA-15), with its unique, tunable pore diameter, and easily functionalized surface, provides a representative example of this new generation of materials. Here, we review recent advances in the design and synthesis of nanostructured mesoporous materials, focusing on SBA-15, and highlight opportunities for the delivery of biological agents to various organ and tissue compartments. The SBA-15 platform provides a delivery carrier that is inherently separated from the active biologic due to distinct intra and extra-particle environments. This permits the SBA-15 platform to not require direct modification of the active biological therapeutic. Additionally, this makes the platform universal and allows for its application independent of the desired methods of discovery and development. The SBA-15 platform also directly addresses issues of targeted delivery and controlled release, although future challenges in the implementation of this platform reside in particle design, biocompatibility, and the tunability of the internal and external material properties. Examples illustrating the flexibility in the application of the SBA-15 platform are also discussed.

  3. Design of multimodal degradable hydrogels for controlled therapeutic delivery

    NASA Astrophysics Data System (ADS)

    Kharkar, Prathamesh Madhav

    Hydrogels are of growing interest for the delivery of therapeutics to specific sites in the body. For localized drug delivery, hydrophilic polymeric precursors often are laden with bioactive moieties and then directly injected to the site of interest for in situ gel formation. The release of physically entrapped cargo is dictated by Fickian diffusion, degradation of the drug carrier, or a combination of both. The goal of this work was to design and characterize degradable hydrogel formulations that are responsive to multiple biologically relevant stimuli for degradation-mediated delivery of cargo molecules such as therapeutic proteins, growth factors, and immunomodulatory agents. We began by demonstrating the use of cleavable click linkages formed by Michael-type addition reactions in conjunction with hydrolytically cleavable functionalities for the degradation of injectable hydrogels by endogenous stimuli for controlled protein release. Specifically, the reaction between maleimides and thiols was utilized for hydrogel formation, where thiol selection dictates the degradability of the resulting linkage under thiol-rich reducing conditions. Relevant microenvironments where degradation would occur in vivo include those rich in glutathione (GSH), a tripeptide that is found at elevated concentrations in carcinoma tissues. Degradation of the hydrogels was monitored with rheometry and volumetric swelling measurements. Arylthiol-based thioether succinimide linkages underwent degradation via click cleavage and thiol exchange reaction in the presence of GSH and via ester hydrolysis, whereas alkylthiol-based thioether succinimide linkages only undergo degradation by only ester hydrolysis. The resulting control over the degradation rate within a reducing microenvironment resulted in 2.5 fold differences in the release profile of the model protein, a fluorescently-labeled bovine serum albumin, from dually degradable hydrogels compared to non-degradable hydrogels, where the

  4. Multipurpose Cargo Transfer Bag

    NASA Technical Reports Server (NTRS)

    Broyan, James; Baccus, Shelley

    2014-01-01

    The Logistics Reduction (LR) project within the Advanced Exploration Systems (AES) program is tasked with reducing logistical mass and repurposing logistical items. Multipurpose Cargo Transfer Bags (MCTB) have been designed such that they can serve the same purpose as a Cargo Transfer Bag, the suitcase-shaped common logistics carrying bag for Shuttle and the International Space Station. After use as a cargo carrier, a regular CTB becomes trash, whereas the MCTB can be unzipped, unsnapped, and unfolded to be reused. Reuse ideas that have been investigated include partitions, crew quarters, solar radiation storm shelters, acoustic blankets, and forward osmosis water processing.

  5. Transdermal Delivery of Iron Using Soluble Microneedles: Dermal Kinetics and Safety.

    PubMed

    Modepalli, Naresh; Shivakumar, H Nanjappa; McCrudden, Maeliosa T C; Donnelly, Ryan F; Banga, Ajay; Murthy, S Narasimha

    2016-03-01

    Currently, the iron compounds are administered via oral and parenteral routes in patients of all ages, to treat iron deficiency. Despite continued efforts to supplement iron via these conventional routes, iron deficiency still remains the most prevalent nutritional disorder all over the world. Transdermal replenishment of iron is a novel, potential approach of iron replenishment. Ferric pyrophosphate (FPP) was found to be a suitable source of iron for transdermal replenishment. The safety of FPP was assessed in this project by challenging the dermal fibroblast cells with high concentration of FPP. The cell viability assay and reactive oxygen species assay were performed. The soluble microneedle array was developed, incorporated with FPP and the kinetics of free iron in the skin; extracellular fluid following dermal administration of microneedle array was investigated in hairless rats. From the cell based assays, FPP was selected as one of the potential iron sources for transdermal delivery. The microneedles were found to dissolve in the skin fluid within 3 hours of administration. The FPP concentration in the dermal extracellular fluid declined after complete dissolution of the microneedle array. Overall, the studies demonstrated the safety of FPP for dermal delivery and the feasibility of soluble microneedle approach for transdermal iron replenishment therapy. Copyright © 2016 American Pharmacists Association®. Published by Elsevier Inc. All rights reserved.

  6. Characterizing X-ray Attenuation of Containerized Cargo

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Birrer, N.; Divin, C.; Glenn, S.

    X-ray inspection systems can be used to detect radiological and nuclear threats in imported cargo. In order to better understand performance of these systems, the attenuation characteristics of imported cargo need to be determined. This project focused on developing image processing algorithms for segmenting cargo and using x-ray attenuation to quantify equivalent steel thickness to determine cargo density. These algorithms were applied to over 450 cargo radiographs. The results are summarized in this report.

  7. Taming the Wildness of "Trojan-Horse" Peptides by Charge-Guided Masking and Protease-Triggered Demasking for the Controlled Delivery of Antitumor Agents.

    PubMed

    Shi, Nian-Qiu; Qi, Xian-Rong

    2017-03-29

    Cell-penetrating peptide (CPP), also called "Trojan Horse" peptide, has become a successful approach to deliver various payloads into cells for achieving the intracellular access. However, the "Trojan Horse" peptide is too wild, not just to "Troy", but rather widely distributed in the body. Thus, there is an urgent need to tame the wildness of "Trojan Horse" peptide for targeted delivery of antineoplastic agents to the tumor site. To achieve this goal, we exploit a masked CPP-doxorubicin conjugate platform for targeted delivery of chemotherapeutic drugs using charge-guided masking and protease-triggered demasking strategies. In this platform, the cell-penetrating function of the positively CPP (d-form nonaarginine) is abrogated by a negatively shielding peptide (masked CPP), and between them is a cleavable substrate peptide by the protease (MMP-2/9). Protease-triggered demasking would occur when the masked CPP reached the MMP-2/9-riched tumor. The CPP-doxorubicin conjugate (CPP-Dox) and the masked CPP-Dox conjugate (mCPP-Dox) were used as models for the evaluation of masking and demasking processes. It was found that exogenous MMP-2/9 could effectively trigger the reversion of CPP-cargo in this conjugate, and this trigger adhered to the Michaelis-Menten kinetics profile. This conjugate was sensitive to the trigger of endogenous MMP-2/9 and could induce enhanced cytotoxicity toward MMP-2/9-rich tumor cells. In vivo antitumor efficacy revealed that this masked conjugate had considerable antitumor activity and could inhibit the tumor growth at a higher level relative to CPP-cargo. Low toxicity in vivo showed the noticeably decreased wildness of this conjugate toward normal tissues and more controllable entry of antitumor agents into "Troy". On the basis of analyses in vitro and in vivo, this mCPP-cargo conjugate delivery system held an improved selectivity toward MMP-2/9-rich tumors and would be a promising strategy for tumor-targeted treatment.

  8. 29 CFR 1918.87 - Ship's cargo elevators.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 7 2011-07-01 2011-07-01 false Ship's cargo elevators. 1918.87 Section 1918.87 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.87 Ship's cargo elevators. (a) Safe working load. The safe working loads of ship's cargo elevators shall be determined and followed...

  9. 29 CFR 1918.87 - Ship's cargo elevators.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 7 2014-07-01 2014-07-01 false Ship's cargo elevators. 1918.87 Section 1918.87 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.87 Ship's cargo elevators. (a) Safe working load. The safe working loads of ship's cargo elevators shall be determined and followed...

  10. 29 CFR 1918.87 - Ship's cargo elevators.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 7 2012-07-01 2012-07-01 false Ship's cargo elevators. 1918.87 Section 1918.87 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.87 Ship's cargo elevators. (a) Safe working load. The safe working loads of ship's cargo elevators shall be determined and followed...

  11. 29 CFR 1918.87 - Ship's cargo elevators.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 7 2013-07-01 2013-07-01 false Ship's cargo elevators. 1918.87 Section 1918.87 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.87 Ship's cargo elevators. (a) Safe working load. The safe working loads of ship's cargo elevators shall be determined and followed...

  12. 46 CFR 154.235 - Cargo tank location.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo tank location. 154.235 Section 154.235 Shipping... FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Ship Survival Capability and Cargo Tank Location § 154.235 Cargo tank location. (a) For type IG hulls, cargo...

  13. 46 CFR 154.235 - Cargo tank location.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo tank location. 154.235 Section 154.235 Shipping... FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Ship Survival Capability and Cargo Tank Location § 154.235 Cargo tank location. (a) For type IG hulls, cargo...

  14. 46 CFR 154.235 - Cargo tank location.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo tank location. 154.235 Section 154.235 Shipping... FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Ship Survival Capability and Cargo Tank Location § 154.235 Cargo tank location. (a) For type IG hulls, cargo...

  15. 33 CFR 401.80 - Reporting dangerous cargo.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Reporting dangerous cargo. 401.80... dangerous cargo. (a) The master of any explosive vessel or hazardous cargo vessel shall report to a Seaway station, as set out in Schedule III, the nature, quantity, and IMO classification of the dangerous cargo...

  16. 33 CFR 401.80 - Reporting dangerous cargo.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Reporting dangerous cargo. 401.80... dangerous cargo. (a) The master of any explosive vessel or hazardous cargo vessel shall report to a Seaway station, as set out in Schedule III, the nature, quantity, and IMO classification of the dangerous cargo...

  17. 33 CFR 401.80 - Reporting dangerous cargo.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Reporting dangerous cargo. 401.80... dangerous cargo. (a) The master of any explosive vessel or hazardous cargo vessel shall report to a Seaway station, as set out in Schedule III, the nature, quantity, and IMO classification of the dangerous cargo...

  18. 33 CFR 401.80 - Reporting dangerous cargo.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Reporting dangerous cargo. 401.80... dangerous cargo. (a) The master of any explosive vessel or hazardous cargo vessel shall report to a Seaway station, as set out in Schedule III, the nature, quantity, and IMO classification of the dangerous cargo...

  19. 33 CFR 401.80 - Reporting dangerous cargo.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Reporting dangerous cargo. 401.80... dangerous cargo. (a) The master of any explosive vessel or hazardous cargo vessel shall report to a Seaway station, as set out in Schedule III, the nature, quantity, and IMO classification of the dangerous cargo...

  20. 46 CFR 105.20-3 - Cargo tanks.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Cargo tanks. 105.20-3 Section 105.20-3 Shipping COAST... VESSELS DISPENSING PETROLEUM PRODUCTS Specific Requirements-Cargo Tanks § 105.20-3 Cargo tanks. (a) Construction and Materials. (1) The cargo tanks must be constructed of iron, steel, copper, nickel alloy...

  1. 46 CFR 105.20-3 - Cargo tanks.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Cargo tanks. 105.20-3 Section 105.20-3 Shipping COAST... VESSELS DISPENSING PETROLEUM PRODUCTS Specific Requirements-Cargo Tanks § 105.20-3 Cargo tanks. (a) Construction and Materials. (1) The cargo tanks must be constructed of iron, steel, copper, nickel alloy...

  2. 46 CFR 105.20-3 - Cargo tanks.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Cargo tanks. 105.20-3 Section 105.20-3 Shipping COAST... VESSELS DISPENSING PETROLEUM PRODUCTS Specific Requirements-Cargo Tanks § 105.20-3 Cargo tanks. (a) Construction and Materials. (1) The cargo tanks must be constructed of iron, steel, copper, nickel alloy...

  3. 46 CFR 105.20-3 - Cargo tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Cargo tanks. 105.20-3 Section 105.20-3 Shipping COAST... VESSELS DISPENSING PETROLEUM PRODUCTS Specific Requirements-Cargo Tanks § 105.20-3 Cargo tanks. (a) Construction and Materials. (1) The cargo tanks must be constructed of iron, steel, copper, nickel alloy...

  4. 29 CFR 1918.84 - Bulling cargo.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.84 Bulling cargo. (a) Bulling cargo... from padeyes, straps, or beam clamps. Snatch blocks or straps shall not be made fast to batten cleats...

  5. 46 CFR 154.1810 - Cargo manual.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... with inert gas and air. (13) A description of hull and cargo tank temperature monitoring systems. (14... GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1810 Cargo manual. (a) No person...

  6. 46 CFR 154.1810 - Cargo manual.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... with inert gas and air. (13) A description of hull and cargo tank temperature monitoring systems. (14... GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1810 Cargo manual. (a) No person...

  7. 46 CFR 154.1810 - Cargo manual.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... with inert gas and air. (13) A description of hull and cargo tank temperature monitoring systems. (14... GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1810 Cargo manual. (a) No person...

  8. 46 CFR 154.1810 - Cargo manual.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... with inert gas and air. (13) A description of hull and cargo tank temperature monitoring systems. (14... GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1810 Cargo manual. (a) No person...

  9. 49 CFR 172.328 - Cargo tanks.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 2 2014-10-01 2014-10-01 false Cargo tanks. 172.328 Section 172.328... SECURITY PLANS Marking § 172.328 Cargo tanks. (a) Providing and affixing identification numbers. Unless a cargo tank is already marked with the identification numbers required by this subpart, the...

  10. 49 CFR 172.328 - Cargo tanks.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 2 2013-10-01 2013-10-01 false Cargo tanks. 172.328 Section 172.328... SECURITY PLANS Marking § 172.328 Cargo tanks. (a) Providing and affixing identification numbers. Unless a cargo tank is already marked with the identification numbers required by this subpart, the...

  11. 49 CFR 172.328 - Cargo tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 2 2012-10-01 2012-10-01 false Cargo tanks. 172.328 Section 172.328... SECURITY PLANS Marking § 172.328 Cargo tanks. (a) Providing and affixing identification numbers. Unless a cargo tank is already marked with the identification numbers required by this subpart, the...

  12. 49 CFR 172.328 - Cargo tanks.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 2 2011-10-01 2011-10-01 false Cargo tanks. 172.328 Section 172.328... SECURITY PLANS Marking § 172.328 Cargo tanks. (a) Providing and affixing identification numbers. Unless a cargo tank is already marked with the identification numbers required by this subpart, the...

  13. Thiol–ene click hydrogels for therapeutic delivery

    PubMed Central

    Kharkar, Prathamesh M.; Rehmann, Matthew S.; Skeens, Kelsi M.; Maverakis, Emanual; Kloxin, April M.

    2016-01-01

    Hydrogels are of growing interest for the delivery of therapeutics to specific sites in the body. For use as a delivery vehicle, hydrophilic precursors are usually laden with bioactive moieties and then directly injected to the site of interest for in situ gel formation and controlled release dictated by precursor design. Hydrogels formed by thiol–ene click reactions are attractive for local controlled release of therapeutics owing to their rapid reaction rate and efficiency under mild aqueous conditions, enabling in situ formation of gels with tunable properties often responsive to environmental cues. Herein, we will review the wide range of applications for thiol–ene hydrogels, from the prolonged release of anti-inflammatory drugs in the spine to the release of protein-based therapeutics in response to cell-secreted enzymes, with a focus on their clinical relevance. We will also provide a brief overview of thiol–ene click chemistry and discuss the available alkene chemistries pertinent to macromolecule functionalization and hydrogel formation. These chemistries include functional groups susceptible to Michael type reactions relevant for injection and radically-mediated reactions for greater temporal control of formation at sites of interest using light. Additionally, mechanisms for the encapsulation and controlled release of therapeutic cargoes are reviewed, including i) tuning the mesh size of the hydrogel initially and temporally for cargo entrapment and release and ii) covalent tethering of the cargo with degradable linkers or affinity binding sequences to mediate release. Finally, myriad thiol–ene hydrogels and their specific applications also are discussed to give a sampling of the current and future utilization of this chemistry for delivery of therapeutics, such as small molecule drugs, peptides, and biologics. PMID:28361125

  14. 46 CFR 150.120 - Definition of incompatible cargoes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Definition of incompatible cargoes. 150.120 Section 150.120 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.120 Definition of incompatible cargoes. Except as described in § 150.150, a cargo...

  15. 46 CFR 150.120 - Definition of incompatible cargoes.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Definition of incompatible cargoes. 150.120 Section 150.120 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.120 Definition of incompatible cargoes. Except as described in § 150.150, a cargo...

  16. 46 CFR 150.120 - Definition of incompatible cargoes.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Definition of incompatible cargoes. 150.120 Section 150.120 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.120 Definition of incompatible cargoes. Except as described in § 150.150, a cargo...

  17. 46 CFR 150.120 - Definition of incompatible cargoes.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Definition of incompatible cargoes. 150.120 Section 150.120 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.120 Definition of incompatible cargoes. Except as described in § 150.150, a cargo...

  18. 46 CFR 150.120 - Definition of incompatible cargoes.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Definition of incompatible cargoes. 150.120 Section 150.120 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES § 150.120 Definition of incompatible cargoes. Except as described in § 150.150, a cargo...

  19. 46 CFR 151.13-5 - Cargo segregation-tanks.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Cargo Segregation § 151.13-5 Cargo segregation—tanks. (a... through design. (2) Segregation of cargo space from machinery spaces and other spaces which have or could... Grade E Liquid (if compatible with cargo) is satisfactory. (b) [Reserved] (c) If a cofferdam is required...

  20. 46 CFR 151.13-5 - Cargo segregation-tanks.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Cargo Segregation § 151.13-5 Cargo segregation—tanks. (a... through design. (2) Segregation of cargo space from machinery spaces and other spaces which have or could... Grade E Liquid (if compatible with cargo) is satisfactory. (b) [Reserved] (c) If a cofferdam is required...

  1. Design and Application of Multifunctional DNA Nanocarriers for Therapeutic Delivery

    PubMed Central

    Charoenphol, Phapanin; Bermudez, Harry

    2013-01-01

    The unique programmability of nucleic acids offers versatility and flexibility in the creation of self-assembled DNA nanostructures. To date, many three-dimensional DNA architectures have been precisely formed of varying sizes and shapes. Their biocompatibility, biodegradability, and high intrinsic stability in physiological environments emphasize their emerging use as carriers for drug and gene delivery. Furthermore, DNA nanocarriers have been shown to enter cells efficiently and without the aid of transfection reagents. A key strength of DNA nanocarriers over other delivery systems is their modularity and their ability to control the spatial distribution of cargoes and ligands. Optimizing DNA nanocarrier properties to dictate their localization, uptake, and intracellular trafficking is also possible. In this review, we present design considerations for DNA nanocarriers and examples of their use in the context of therapeutic delivery applications. The assembly of DNA nanocarriers and approaches for loading and releasing cargo are described. The stability and safety of DNA nanocarriers is also discussed, with particular attention to the in vivo physiological environment. Mechanisms of cellular uptake and intracellular trafficking are examined, and we conclude with strategies to enhance the delivery efficiency of DNA nanocarriers. PMID:23896566

  2. 46 CFR 153.251 - Independent cargo tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Independent cargo tanks. 153.251 Section 153.251... CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks § 153.251 Independent cargo tanks. All independent cargo tank must meet § 38.05-10 (a)(1), (b), (d), and...

  3. 46 CFR 153.251 - Independent cargo tanks.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Independent cargo tanks. 153.251 Section 153.251... CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks § 153.251 Independent cargo tanks. All independent cargo tank must meet § 38.05-10 (a)(1), (b), (d), and...

  4. Controlled propulsion and cargo transport of rotating nickel nanowires near a patterned solid surface.

    PubMed

    Zhang, Li; Petit, Tristan; Lu, Yang; Kratochvil, Bradley E; Peyer, Kathrin E; Pei, Ryan; Lou, Jun; Nelson, Bradley J

    2010-10-26

    We show that rotating Ni nanowires are capable of propulsion and transport of colloidal cargo near a complex surface. When dissimilar boundary conditions exist at the two ends of a nanowire, such as when a nanowire is near a wall, tumbling motion can be generated that leads to propulsion of the nanowire. The motion of the nanowire can be precisely controlled using a uniform rotating magnetic field. We investigate the propulsion mechanism and the trajectory of the nanowire during the tumbling motion and demonstrate cargo transport of a polystyrene microbead by the nanowire over a flat surface or across an open microchannel. The results imply that functionalized, ferromagnetic one-dimensional, tumbling nanostructures can be used for cell manipulation and targeted drug delivery in a low Reynolds number aqueous environment.

  5. 46 CFR 153.907 - Cargo information.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo information. 153.907 Section 153.907 Shipping... Information § 153.907 Cargo information. (a) The master shall ensure that the following information for each... process for the vessel. (b) The master shall make sure that the following information for cargoes other...

  6. 46 CFR 153.907 - Cargo information.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo information. 153.907 Section 153.907 Shipping... Information § 153.907 Cargo information. (a) The master shall ensure that the following information for each... process for the vessel. (b) The master shall make sure that the following information for cargoes other...

  7. In vitro and ex vivo strategies for intracellular delivery

    NASA Astrophysics Data System (ADS)

    Stewart, Martin P.; Sharei, Armon; Ding, Xiaoyun; Sahay, Gaurav; Langer, Robert; Jensen, Klavs F.

    2016-10-01

    Intracellular delivery of materials has become a critical component of genome-editing approaches, ex vivo cell-based therapies, and a diversity of fundamental research applications. Limitations of current technologies motivate development of next-generation systems that can deliver a broad variety of cargo to diverse cell types. Here we review in vitro and ex vivo intracellular delivery approaches with a focus on mechanisms, challenges and opportunities. In particular, we emphasize membrane-disruption-based delivery methods and the transformative role of nanotechnology, microfluidics and laboratory-on-chip technology in advancing the field.

  8. 46 CFR 154.630 - Cargo tank material.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo tank material. 154.630 Section 154.630 Shipping... § 154.630 Cargo tank material. (a) If a material of a cargo tank is not listed in §§ 154.610, 154.615 or...). (b) For cargo tanks of aluminum alloys with welded connections, the minimum tensile strength (σB) for...

  9. 49 CFR 1546.213 - Access to cargo: Security threat assessments for cargo personnel in the United States.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... the cargo enters an airport Security Identification Display Area or is transferred to another TSA... under §§ 1546.101(a) or (b) accepts the cargo, until the cargo— (A) Enters an airport Security... 49 Transportation 9 2012-10-01 2012-10-01 false Access to cargo: Security threat assessments for...

  10. 49 CFR 1546.213 - Access to cargo: Security threat assessments for cargo personnel in the United States.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... the cargo enters an airport Security Identification Display Area or is transferred to another TSA... under §§ 1546.101(a) or (b) accepts the cargo, until the cargo— (A) Enters an airport Security... 49 Transportation 9 2014-10-01 2014-10-01 false Access to cargo: Security threat assessments for...

  11. 49 CFR 1546.213 - Access to cargo: Security threat assessments for cargo personnel in the United States.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... the cargo enters an airport Security Identification Display Area or is transferred to another TSA... under §§ 1546.101(a) or (b) accepts the cargo, until the cargo— (A) Enters an airport Security... 49 Transportation 9 2013-10-01 2013-10-01 false Access to cargo: Security threat assessments for...

  12. 49 CFR 1546.213 - Access to cargo: Security threat assessments for cargo personnel in the United States.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... the cargo enters an airport Security Identification Display Area or is transferred to another TSA... under §§ 1546.101(a) or (b) accepts the cargo, until the cargo— (A) Enters an airport Security... 49 Transportation 9 2011-10-01 2011-10-01 false Access to cargo: Security threat assessments for...

  13. Acoustic Multipurpose Cargo Transfer Bag

    NASA Technical Reports Server (NTRS)

    Baccus, Shelley

    2015-01-01

    The Logistics Reduction (LR) project within the Advanced Exploration Systems (AES) program is tasked with reducing logistical mass and repurposing logistical items. Multipurpose Cargo Transfer Bags (MCTB) are designed to be the same external volume as a regular cargo transfer bag, the common logistics carrier for the International Space Station. After use as a cargo bag, the MCTB can be unzipped and unfolded to be reused. This Acoustic MCTBs transform into acoustic blankets after the initial logistics carrying objective is complete.

  14. Dual stimuli-responsive nano-vehicles for controlled drug delivery: mesoporous silica nanoparticles end-capped with natural chitosan.

    PubMed

    Hakeem, Abdul; Duan, Ruixue; Zahid, Fouzia; Dong, Chao; Wang, Boya; Hong, Fan; Ou, Xiaowen; Jia, Yongmei; Lou, Xiaoding; Xia, Fan

    2014-11-11

    Herein, we report natural chitosan end-capped MCM-41 type MSNPs as novel, dual stimuli, responsive nano-vehicles for controlled anticancer drug delivery. The chitosan nanovalves tightly close the pores of the MSNPs to control premature cargo release under physiological conditions but respond to lysozyme and acidic media to release the trapped cargo.

  15. 76 FR 51847 - Air Cargo Screening

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-18

    ...This rule amends two provisions of the Air Cargo Screening Interim Final Rule (IFR) issued on September 16, 2009, and responds to public comments on the IFR. The IFR codified a statutory requirement of the Implementing Recommendations of the 9/11 Commission Act of 2007 that the Transportation Security Administration (TSA) establish a system to screen 100 percent of cargo transported on passenger aircraft not later than August 3, 2010. It established the Certified Cargo Screening Program, in which TSA certifies shippers, indirect air carriers, and other entities as Certified Cargo Screening Facilities (CCSFs) to screen cargo prior to transport on passenger aircraft. Under the IFR, each CCSF applicant had to successfully undergo an assessment of their facility by a TSA-approved validation firm or by TSA. In response to public comment, this Final Rule removes all validation firm and validator provisions, so that TSA will continue to conduct assessments of the applicant's facility to determine if certification is appropriate. The IFR also required that if an aircraft operator or foreign air carrier screens cargo off an airport, it must do so as a CCSF. The Final Rule deletes this requirement, as aircraft operators are already screening cargo on airport under a TSA-approved security program, and do not need a separate certification to screen cargo off airport. This rule also proposes a fee range for the processing of Security Threat Assessments, and seeks comment on the proposed fee range and the methodology used to develop the fee. TSA will announce the final fee in a future Federal Register notice.

  16. Characterizing Complexity of Containerized Cargo X-ray Images

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wang, Guangxing; Martz, Harry; Glenn, Steven

    X-ray imaging can be used to inspect cargos imported into the United States. In order to better understand the performance of X-ray inspection systems, the X-ray characteristics (density, complexity) of cargo need to be quantified. In this project, an image complexity measure called integrated power spectral density (IPSD) was studied using both DNDO engineered cargos and stream-of-commerce (SOC) cargos. A joint distribution of cargo density and complexity was obtained. A support vector machine was used to classify the SOC cargos into four categories to estimate the relative fractions.

  17. Active colloids as mobile microelectrodes for unified label-free selective cargo transport.

    PubMed

    Boymelgreen, Alicia M; Balli, Tov; Miloh, Touvia; Yossifon, Gilad

    2018-02-22

    Utilization of active colloids to transport both biological and inorganic cargo has been widely examined in the context of applications ranging from targeted drug delivery to sample analysis. In general, carriers are customized to load one specific target via a mechanism distinct from that driving the transport. Here we unify these tasks and extend loading capabilities to include on-demand selection of multiple nano/micro-sized targets without the need for pre-labelling or surface functionalization. An externally applied electric field is singularly used to drive the active cargo carrier and transform it into a mobile floating electrode that can attract (trap) or repel specific targets from its surface by dielectrophoresis, enabling dynamic control of target selection, loading and rate of transport via the electric field parameters. In the future, dynamic selectivity could be combined with directed motion to develop building blocks for bottom-up fabrication in applications such as additive manufacturing and soft robotics.

  18. Cargo Data Management Demonstration System

    DOT National Transportation Integrated Search

    1974-02-01

    Delays in receipt and creation of cargo documents are a problem in international trade. The work described demonstrates some of the advantages and capabilities of a computer-based cargo data management system. A demonstration system for data manageme...

  19. Aircraft Cargo Compartment Fire Test Simulation Program

    NASA Technical Reports Server (NTRS)

    Blumke, R. E.

    1977-01-01

    The objective of the test was to assess fire containment and fire extinguishment in the cargo by reducing the ventilation through the cargo compartment. Parameters which were measured included ignition time, burnthrough time, and physical damage to the cargo liner, composition of selected combustible gases, temperature-time histories, heat flux, and detector response. The ignitor load was made of a typical cargo consisting of filled cardboard cartons occupying 50% of the compartment volume.

  20. Liberalisation of air cargo transport

    DOT National Transportation Integrated Search

    2002-05-02

    Over a period of many years, international air cargo demand has continued to increase more rapidly than international air passenger demand. Air cargo arrangements need to be as efficient and expeditious as possible, to meet user requirements for air ...

  1. 46 CFR 148.72 - Dangerous cargo manifest; exceptions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Dangerous cargo manifest; exceptions. 148.72 Section 148.72 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF... Dangerous cargo manifest; exceptions. (a) No dangerous cargo manifest is required for— (1) Shipments by...

  2. 46 CFR 148.72 - Dangerous cargo manifest; exceptions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Dangerous cargo manifest; exceptions. 148.72 Section 148.72 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF... Dangerous cargo manifest; exceptions. (a) No dangerous cargo manifest is required for— (1) Shipments by...

  3. 46 CFR 148.72 - Dangerous cargo manifest; exceptions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Dangerous cargo manifest; exceptions. 148.72 Section 148.72 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF... Dangerous cargo manifest; exceptions. (a) No dangerous cargo manifest is required for— (1) Shipments by...

  4. 46 CFR 148.72 - Dangerous cargo manifest; exceptions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Dangerous cargo manifest; exceptions. 148.72 Section 148.72 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF... Dangerous cargo manifest; exceptions. (a) No dangerous cargo manifest is required for— (1) Shipments by...

  5. Cell-Mediated Drugs Delivery

    PubMed Central

    Batrakova, Elena V.; Gendelman, Howard E.; Kabanov, Alexander V.

    2011-01-01

    INTRODUCTION Drug targeting to sites of tissue injury, tumor or infection with limited toxicity is the goal for successful pharmaceutics. Immunocytes (including mononuclear phagocytes (dendritic cells, monocytes and macrophages), neutrophils, and lymphocytes) are highly mobile; they can migrate across impermeable barriers and release their drug cargo at sites of infection or tissue injury. Thus immune cells can be exploited as trojan horses for drug delivery. AREAS COVERED IN THIS REVIEW This paper reviews how immunocytes laden with drugs can cross the blood brain or blood tumor barriers, to facilitate treatments for infectious diseases, injury, cancer, or inflammatory diseases. The promises and perils of cell-mediated drug delivery are reviewed, with examples of how immunocytes can be harnessed to improve therapeutic end points. EXPERT OPINION Using cells as delivery vehicles enables targeted drug transport, and prolonged circulation times, along with reductions in cell and tissue toxicities. Such systems for drug carriage and targeted release represent a novel disease combating strategy being applied to a spectrum of human disorders. The design of nanocarriers for cell-mediated drug delivery may differ from those used for conventional drug delivery systems; nevertheless, engaging different defense mechanisms into drug delivery may open new perspectives for the active delivery of drugs. PMID:21348773

  6. 46 CFR 153.977 - Supervision of cargo transfer.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Supervision of cargo transfer. 153.977 Section 153.977 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.977 Supervision of cargo transfer. The person in charge of cargo transfer shall: (a...

  7. 46 CFR 153.977 - Supervision of cargo transfer.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Supervision of cargo transfer. 153.977 Section 153.977 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.977 Supervision of cargo transfer. The person in charge of cargo transfer shall: (a...

  8. 46 CFR 153.977 - Supervision of cargo transfer.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Supervision of cargo transfer. 153.977 Section 153.977 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.977 Supervision of cargo transfer. The person in charge of cargo transfer shall: (a...

  9. 46 CFR 153.977 - Supervision of cargo transfer.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Supervision of cargo transfer. 153.977 Section 153.977 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.977 Supervision of cargo transfer. The person in charge of cargo transfer shall: (a...

  10. 46 CFR 153.977 - Supervision of cargo transfer.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Supervision of cargo transfer. 153.977 Section 153.977 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.977 Supervision of cargo transfer. The person in charge of cargo transfer shall: (a...

  11. 46 CFR 151.13-5 - Cargo segregation-tanks.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Cargo Segregation § 151.13-5 Cargo segregation—tanks. (a... design. (2) Segregation of cargo space from machinery spaces and other spaces which have or could have a... separating medium. ii=Double bulkhead, required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid...

  12. 46 CFR 151.13-5 - Cargo segregation-tanks.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Cargo Segregation § 151.13-5 Cargo segregation—tanks. (a... design. (2) Segregation of cargo space from machinery spaces and other spaces which have or could have a... separating medium. ii=Double bulkhead, required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid...

  13. 46 CFR 151.13-5 - Cargo segregation-tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Cargo Segregation § 151.13-5 Cargo segregation—tanks. (a... design. (2) Segregation of cargo space from machinery spaces and other spaces which have or could have a... separating medium. ii=Double bulkhead, required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid...

  14. 46 CFR 153.970 - Cargo transfer piping.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo transfer piping. 153.970 Section 153.970 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures...

  15. 46 CFR 153.970 - Cargo transfer piping.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo transfer piping. 153.970 Section 153.970 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures...

  16. 46 CFR 153.1020 - Unusually toxic cargoes.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Unusually toxic cargoes. 153.1020 Section 153.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Special Cargo...

  17. 46 CFR 153.1020 - Unusually toxic cargoes.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Unusually toxic cargoes. 153.1020 Section 153.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Special Cargo...

  18. 46 CFR 153.968 - Cargo transfer conference.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo transfer conference. 153.968 Section 153.968 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  19. 46 CFR 153.1020 - Unusually toxic cargoes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Unusually toxic cargoes. 153.1020 Section 153.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Special Cargo...

  20. 46 CFR 153.968 - Cargo transfer conference.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo transfer conference. 153.968 Section 153.968 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  1. 46 CFR 153.970 - Cargo transfer piping.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo transfer piping. 153.970 Section 153.970 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures...

  2. 46 CFR 153.1020 - Unusually toxic cargoes.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Unusually toxic cargoes. 153.1020 Section 153.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Special Cargo...

  3. 46 CFR 153.968 - Cargo transfer conference.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo transfer conference. 153.968 Section 153.968 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  4. 46 CFR 153.1020 - Unusually toxic cargoes.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Unusually toxic cargoes. 153.1020 Section 153.1020 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Special Cargo...

  5. 46 CFR 153.968 - Cargo transfer conference.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo transfer conference. 153.968 Section 153.968 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  6. 46 CFR 153.970 - Cargo transfer piping.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo transfer piping. 153.970 Section 153.970 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures...

  7. 46 CFR 153.970 - Cargo transfer piping.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo transfer piping. 153.970 Section 153.970 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures...

  8. 46 CFR 154.476 - Cargo transfer devices and means.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... of cargo transfer, such as another pump or gas pressurization. (b) If cargo is transferred by gas... SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Support System § 154.476 Cargo transfer devices and means. (a) If a cargo pump in a cargo tank is...

  9. Functionalization of protein-based nanocages for drug delivery applications.

    PubMed

    Schoonen, Lise; van Hest, Jan C M

    2014-07-07

    Traditional drug delivery strategies involve drugs which are not targeted towards the desired tissue. This can lead to undesired side effects, as normal cells are affected by the drugs as well. Therefore, new systems are now being developed which combine targeting functionalities with encapsulation of drug cargo. Protein nanocages are highly promising drug delivery platforms due to their perfectly defined structures, biocompatibility, biodegradability and low toxicity. A variety of protein nanocages have been modified and functionalized for these types of applications. In this review, we aim to give an overview of different types of modifications of protein-based nanocontainers for drug delivery applications.

  10. Aviation System Analysis Capability Air Carrier Investment Model-Cargo

    NASA Technical Reports Server (NTRS)

    Johnson, Jesse; Santmire, Tara

    1999-01-01

    The purpose of the Aviation System Analysis Capability (ASAC) Air Cargo Investment Model-Cargo (ACIMC), is to examine the economic effects of technology investment on the air cargo market, particularly the market for new cargo aircraft. To do so, we have built an econometrically based model designed to operate like the ACIM. Two main drivers account for virtually all of the demand: the growth rate of the Gross Domestic Product (GDP) and changes in the fare yield (which is a proxy of the price charged or fare). These differences arise from a combination of the nature of air cargo demand and the peculiarities of the air cargo market. The net effect of these two factors are that sales of new cargo aircraft are much less sensitive to either increases in GDP or changes in the costs of labor, capital, fuel, materials, and energy associated with the production of new cargo aircraft than the sales of new passenger aircraft. This in conjunction with the relatively small size of the cargo aircraft market means technology improvements to the cargo aircraft will do relatively very little to spur increased sales of new cargo aircraft.

  11. 46 CFR 154.412 - Cargo tank corrosion allowance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo tank corrosion allowance. 154.412 Section 154.412... Containment Systems § 154.412 Cargo tank corrosion allowance. A cargo tank must be designed with a corrosion...) carries a cargo that corrodes the tank material. Note: Corrosion allowance for independent tank type C is...

  12. 46 CFR 154.412 - Cargo tank corrosion allowance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo tank corrosion allowance. 154.412 Section 154.412... Containment Systems § 154.412 Cargo tank corrosion allowance. A cargo tank must be designed with a corrosion...) carries a cargo that corrodes the tank material. Note: Corrosion allowance for independent tank type C is...

  13. 29 CFR 1918.85 - Containerized cargo operations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Containerized cargo operations. (a) Container markings. Every intermodal container shall be legibly and permanently marked with: (1) The weight of the container when empty, in pounds; (2) The maximum cargo weight... maximum cargo weight, in pounds. (b) Container weight. No container shall be hoisted by any lifting...

  14. 29 CFR 1918.85 - Containerized cargo operations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Containerized cargo operations. (a) Container markings. Every intermodal container shall be legibly and permanently marked with: (1) The weight of the container when empty, in pounds; (2) The maximum cargo weight... maximum cargo weight, in pounds. (b) Container weight. No container shall be hoisted by any lifting...

  15. 29 CFR 1918.85 - Containerized cargo operations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Containerized cargo operations. (a) Container markings. Every intermodal container shall be legibly and permanently marked with: (1) The weight of the container when empty, in pounds; (2) The maximum cargo weight... maximum cargo weight, in pounds. (b) Container weight. No container shall be hoisted by any lifting...

  16. 29 CFR 1918.85 - Containerized cargo operations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Containerized cargo operations. (a) Container markings. Every intermodal container shall be legibly and permanently marked with: (1) The weight of the container when empty, in pounds; (2) The maximum cargo weight... maximum cargo weight, in pounds. (b) Container weight. No container shall be hoisted by any lifting...

  17. 29 CFR 1918.85 - Containerized cargo operations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Containerized cargo operations. (a) Container markings. Every intermodal container shall be legibly and permanently marked with: (1) The weight of the container when empty, in pounds; (2) The maximum cargo weight... maximum cargo weight, in pounds. (b) Container weight. No container shall be hoisted by any lifting...

  18. Efficient delivery of genome-editing proteins using bioreducible lipid nanoparticles

    USDA-ARS?s Scientific Manuscript database

    A central challenge to the development of protein-based therapeutics is the inefficiency of delivery of protein cargo across the mammalian cell membrane, including escape from endosomes. Here we report that combining bioreducible lipid nanoparticles with negatively supercharged Cre recombinase or an...

  19. Cargo/Logistics Airlift System Study (CLASS), Executive Summary

    NASA Technical Reports Server (NTRS)

    Norman, J. M.; Henderson, R. D.; Macey, F. C.; Tuttle, R. P.

    1978-01-01

    The current air cargo system is analyzed along with advanced air cargo systems studies. A forecast of advanced air cargo system demand is presented with cost estimates. It is concluded that there is a need for a dedicated advance air cargo system, and with application of advanced technology, reductions of 45% in air freight rates may be achieved.

  20. 46 CFR 153.440 - Cargo temperature sensors.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo temperature sensors. 153.440 Section 153.440... CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.440 Cargo temperature sensors. (a) Except as prescribed in paragraph (c) of...

  1. 46 CFR 153.440 - Cargo temperature sensors.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo temperature sensors. 153.440 Section 153.440... CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.440 Cargo temperature sensors. (a) Except as prescribed in paragraph (c) of...

  2. 46 CFR 153.968 - Cargo transfer conference.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo transfer conference. 153.968 Section 153.968 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... the facility. (b) The person in charge of cargo transfer shall discuss the important aspects of the...

  3. 46 CFR 151.25-1 - Cargo tank.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... not react with the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is... (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air... LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-1 Cargo tank. When carrying certain...

  4. 46 CFR 151.25-1 - Cargo tank.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... not react with the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is... (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air... LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-1 Cargo tank. When carrying certain...

  5. 46 CFR 151.25-1 - Cargo tank.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... not react with the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is... (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air... LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-1 Cargo tank. When carrying certain...

  6. 46 CFR 151.25-1 - Cargo tank.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... not react with the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is... (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air... LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-1 Cargo tank. When carrying certain...

  7. 46 CFR 151.25-1 - Cargo tank.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... not react with the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is... (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air... LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-1 Cargo tank. When carrying certain...

  8. Membrane oxidation in cell delivery and cell killing applications

    PubMed Central

    Wang, Ting-Yi; Libardo, M. Daben J.; Angeles-Boza, Alfredo M.; Pellois, Jean-Philippe

    2018-01-01

    Cell delivery or cell killing processes often involve the crossing or disruption of cellular membranes. We review how, by modifying the composition and properties of membranes, membrane oxidation can be exploited to enhance the delivery of macromolecular cargos into live human cells. We also describe how membrane oxidation can be utilized to achieve efficient killing of bacteria by antimicrobial peptides. Finally, we present recent evidence highlighting how membrane oxidation is intimately engaged in natural biological processes such as antigen delivery in dendritic cells and in the killing of bacteria by human macrophages. Overall, the insights that have been recently gained in this area should facilitate the development of more effective delivery technologies and antimicrobial therapeutic approaches. PMID:28355059

  9. An outlook for cargo aircraft of the future. [assessment of the future of air cargo by analyzing statistics and trends

    NASA Technical Reports Server (NTRS)

    Nicks, O. W.; Whitehead, A. H., Jr.; Alford, W. J., Jr.

    1975-01-01

    An assessment is provided of the future of air cargo by analyzing air cargo statistics and trends, by noting air cargo system problems and inefficiencies, by analyzing characteristics of air-eligible commodities, and by showing the promise of new technology for future cargo aircraft with significant improvements in costs and efficiency. NASA's proposed program is reviewed which would sponsor the research needed to provide for development of advanced designs by 1985.

  10. Multifunctional polymer-capped mesoporous silica nanoparticles for pH-responsive targeted drug delivery.

    PubMed

    Niedermayer, Stefan; Weiss, Veronika; Herrmann, Annika; Schmidt, Alexandra; Datz, Stefan; Müller, Katharina; Wagner, Ernst; Bein, Thomas; Bräuchle, Christoph

    2015-05-07

    A highly stable modular platform, based on the sequential covalent attachment of different functionalities to the surface of core-shell mesoporous silica nanoparticles (MSNs) for targeted drug delivery is presented. A reversible pH-responsive cap system based on covalently attached poly(2-vinylpyridine) (PVP) was developed as drug release mechanism. Our platform offers (i) tuneable interactions and release kinetics with the cargo drug in the mesopores based on chemically orthogonal core-shell design, (ii) an extremely robust and reversible closure and release mechanism based on endosomal acidification of the covalently attached PVP polymer block, (iii) high colloidal stability due to a covalently coupled PEG shell, and (iv) the ability to covalently attach a wide variety of dyes, targeting ligands and other functionalities at the outer periphery of the PEG shell. The functionality of the system was demonstrated in several cell studies, showing pH-triggered release in the endosome, light-triggered endosomal escape with an on-board photosensitizer, and efficient folic acid-based cell targeting.

  11. 46 CFR 98.25-55 - Cargo piping.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Cargo piping. 98.25-55 Section 98.25-55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK Anhydrous Ammonia in Bulk § 98.25-55...

  12. 46 CFR 98.25-55 - Cargo piping.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Cargo piping. 98.25-55 Section 98.25-55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK Anhydrous Ammonia in Bulk § 98.25-55...

  13. 46 CFR 98.25-55 - Cargo piping.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Cargo piping. 98.25-55 Section 98.25-55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK Anhydrous Ammonia in Bulk § 98.25-55...

  14. 46 CFR 98.25-55 - Cargo piping.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Cargo piping. 98.25-55 Section 98.25-55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK Anhydrous Ammonia in Bulk § 98.25-55...

  15. 46 CFR 98.25-55 - Cargo piping.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Cargo piping. 98.25-55 Section 98.25-55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK Anhydrous Ammonia in Bulk § 98.25-55...

  16. 76 FR 53080 - Air Cargo Screening; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-25

    ..., 1540- 11, 1544-10, 1546-6, 1548-6, 1549-1] RIN 1652-AA64 Air Cargo Screening; Correction AGENCY... Transportation Security Administration (TSA) is correcting the Air Cargo Screening final rule published in the Federal Register on August 18, 2011. The final rule amended two provisions of the Air Cargo Screening...

  17. 49 CFR 176.39 - Inspection of cargo.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... the vessel or its cargo since loading and stowage. However, freight containers or individual barges... 49 Transportation 2 2010-10-01 2010-10-01 false Inspection of cargo. 176.39 Section 176.39... Requirements § 176.39 Inspection of cargo. (a) Manned vessels. The carrier, its agents, and any person...

  18. 49 CFR 176.39 - Inspection of cargo.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... the vessel or its cargo since loading and stowage. However, freight containers or individual barges... 49 Transportation 2 2012-10-01 2012-10-01 false Inspection of cargo. 176.39 Section 176.39... Requirements § 176.39 Inspection of cargo. (a) Manned vessels. The carrier, its agents, and any person...

  19. 49 CFR 176.39 - Inspection of cargo.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... the vessel or its cargo since loading and stowage. However, freight containers or individual barges... 49 Transportation 2 2011-10-01 2011-10-01 false Inspection of cargo. 176.39 Section 176.39... Requirements § 176.39 Inspection of cargo. (a) Manned vessels. The carrier, its agents, and any person...

  20. 49 CFR 176.39 - Inspection of cargo.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... the vessel or its cargo since loading and stowage. However, freight containers or individual barges... 49 Transportation 2 2013-10-01 2013-10-01 false Inspection of cargo. 176.39 Section 176.39... Requirements § 176.39 Inspection of cargo. (a) Manned vessels. The carrier, its agents, and any person...

  1. 49 CFR 176.39 - Inspection of cargo.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... the vessel or its cargo since loading and stowage. However, freight containers or individual barges... 49 Transportation 2 2014-10-01 2014-10-01 false Inspection of cargo. 176.39 Section 176.39... Requirements § 176.39 Inspection of cargo. (a) Manned vessels. The carrier, its agents, and any person...

  2. 46 CFR 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures § 153.957 Persons in charge of...

  3. 46 CFR 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures § 153.957 Persons in charge of...

  4. 46 CFR 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures § 153.957 Persons in charge of...

  5. 46 CFR 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures § 153.957 Persons in charge of...

  6. 46 CFR 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer Procedures § 153.957 Persons in charge of...

  7. 46 CFR 154.554 - Cargo hose: Bursting pressure.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo... cargo tank, the cargo pump discharge, or the vapor compressor discharge must have a bursting pressure of...

  8. 49 CFR 176.30 - Dangerous cargo manifest.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 2 2012-10-01 2012-10-01 false Dangerous cargo manifest. 176.30 Section 176.30... Requirements § 176.30 Dangerous cargo manifest. (a) The carrier, its agents, and any person designated for this purpose by the carrier or agents shall prepare a dangerous cargo manifest, list, or stowage plan. This...

  9. 49 CFR 176.30 - Dangerous cargo manifest.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 2 2014-10-01 2014-10-01 false Dangerous cargo manifest. 176.30 Section 176.30... Requirements § 176.30 Dangerous cargo manifest. (a) The carrier, its agents, and any person designated for this purpose by the carrier or agents must prepare a dangerous cargo manifest, list, or stowage plan. This...

  10. 49 CFR 176.30 - Dangerous cargo manifest.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 2 2011-10-01 2011-10-01 false Dangerous cargo manifest. 176.30 Section 176.30... Requirements § 176.30 Dangerous cargo manifest. (a) The carrier, its agents, and any person designated for this purpose by the carrier or agents shall prepare a dangerous cargo manifest, list, or stowage plan. This...

  11. 49 CFR 176.30 - Dangerous cargo manifest.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 2 2013-10-01 2013-10-01 false Dangerous cargo manifest. 176.30 Section 176.30... Requirements § 176.30 Dangerous cargo manifest. (a) The carrier, its agents, and any person designated for this purpose by the carrier or agents must prepare a dangerous cargo manifest, list, or stowage plan. This...

  12. 46 CFR 154.1816 - Cargo location plan.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo location plan. 154.1816 Section 154.1816 Shipping... FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1816 Cargo location plan. The master shall ensure that: (a) A cargo location plan is prepared that gives: (1) The location and...

  13. Cargos Rotate at Microtubule Intersections during Intracellular Trafficking.

    PubMed

    Gao, Yuan; Anthony, Stephen M; Yu, Yanqi; Yi, Yi; Yu, Yan

    2018-06-19

    Intracellular cargos are transported by molecular motors along actin and microtubules, but how their dynamics depends on the complex structure of the cytoskeletal network remains unclear. In this study, we investigated this longstanding question by measuring simultaneously the rotational and translational dynamics of cargos at microtubule intersections in living cells. We engineered two-faced particles that are fluorescent on one hemisphere and opaque on the other and used their optical anisotropy to report the rotation of cargos. We show that cargos undergo brief episodes of unidirectional and rapid rotation while pausing at microtubule intersections. Probability and amplitude of the cargo rotation depend on the geometry of the intersecting filaments. The cargo rotation is not random motion due to detachment from microtubules, as revealed by statistical analyses of the translational and rotational dynamics. Instead, it is an active rotation driven by motor proteins. Although cargos are known to pause at microtubule intersections, this study reveals a different dimension of dynamics at this seemingly static state and, more importantly, provides direct evidence showing the correlation between cargo rotation and the geometry of underlying microtubule intersections. Copyright © 2018 Biophysical Society. All rights reserved.

  14. 46 CFR 97.12-1 - Bulk ores and similar cargoes.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Bulk ores and similar cargoes. 97.12-1 Section 97.12-1... OPERATIONS Cargo Stowage § 97.12-1 Bulk ores and similar cargoes. (a) The owners or operators of general cargo vessels which carry bulk cargoes such as ore, ore concentrates, and similar cargoes shall furnish...

  15. 29 CFR 1918.87 - Ship's cargo elevators.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Ship's cargo elevators. 1918.87 Section 1918.87 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Handling Cargo § 1918.87 Ship's cargo elevators. (a) Safe working load. The safe workin...

  16. 46 CFR 98.25-80 - Cargo hose.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Cargo hose. (a) Cargo hose fabricated of seamless steel pipe with swivel joints, wire braided armored rubber or other hose material acceptable to the Commandant, shall be fitted to the liquid or vapor lines... 46 Shipping 4 2013-10-01 2013-10-01 false Cargo hose. 98.25-80 Section 98.25-80 Shipping COAST...

  17. 46 CFR 98.25-80 - Cargo hose.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Cargo hose. (a) Cargo hose fabricated of seamless steel pipe with swivel joints, wire braided armored rubber or other hose material acceptable to the Commandant, shall be fitted to the liquid or vapor lines... 46 Shipping 4 2010-10-01 2010-10-01 false Cargo hose. 98.25-80 Section 98.25-80 Shipping COAST...

  18. 46 CFR 98.25-80 - Cargo hose.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Cargo hose. (a) Cargo hose fabricated of seamless steel pipe with swivel joints, wire braided armored rubber or other hose material acceptable to the Commandant, shall be fitted to the liquid or vapor lines... 46 Shipping 4 2012-10-01 2012-10-01 false Cargo hose. 98.25-80 Section 98.25-80 Shipping COAST...

  19. 46 CFR 98.25-80 - Cargo hose.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Cargo hose. (a) Cargo hose fabricated of seamless steel pipe with swivel joints, wire braided armored rubber or other hose material acceptable to the Commandant, shall be fitted to the liquid or vapor lines... 46 Shipping 4 2011-10-01 2011-10-01 false Cargo hose. 98.25-80 Section 98.25-80 Shipping COAST...

  20. 46 CFR 98.25-80 - Cargo hose.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Cargo hose. (a) Cargo hose fabricated of seamless steel pipe with swivel joints, wire braided armored rubber or other hose material acceptable to the Commandant, shall be fitted to the liquid or vapor lines... 46 Shipping 4 2014-10-01 2014-10-01 false Cargo hose. 98.25-80 Section 98.25-80 Shipping COAST...

  1. 46 CFR 154.310 - Cargo piping systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Arrangements § 154.310 Cargo piping systems. Cargo liquid or vapor piping must: (a) Be separated from other...); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room...

  2. 46 CFR 154.310 - Cargo piping systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Arrangements § 154.310 Cargo piping systems. Cargo liquid or vapor piping must: (a) Be separated from other...); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room...

  3. 46 CFR 154.310 - Cargo piping systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Arrangements § 154.310 Cargo piping systems. Cargo liquid or vapor piping must: (a) Be separated from other...); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room...

  4. 46 CFR 154.310 - Cargo piping systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Arrangements § 154.310 Cargo piping systems. Cargo liquid or vapor piping must: (a) Be separated from other...); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room...

  5. 46 CFR 154.310 - Cargo piping systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Arrangements § 154.310 Cargo piping systems. Cargo liquid or vapor piping must: (a) Be separated from other...); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room...

  6. Maritime industry : cargo preference laws--estimated costs and effects

    DOT National Transportation Integrated Search

    1994-11-30

    Cargo preference laws require that certain government-owned or government-financed cargo shipped internationally (between a U.S. port and a foreign port) be carried on U.S.-flag vessels. Cargo subject to these laws is known as preference cargo. This ...

  7. Military Air Cargo Containerization.

    DTIC Science & Technology

    1996-05-01

    MILITARY AIR CARGO CONTAINERIZATION GRADUATE RESEARCH PAPER Joseph W. Mancy, Major, USAF AFIT/ GMO /LAL/96J-4 : ."•" ’* ■- ’ DEPARTMENT OF...Approved to public release; Distribution UnHmlted ? DTIC QUALITY INSPECTED 1 AFIT/ GMO /LAL/96J-4 MILITARY AIR CARGO CONTAINERIZATION GRADUATE RESEARCH...PAPER Joseph W. Mancy, Major, USAF AFIT/ GMO /LAL/96J-4 19960617 134 Approved for public release; distribution unlimited The views expressed in this

  8. Visualization and tracking of tumour extracellular vesicle delivery and RNA translation using multiplexed reporters

    PubMed Central

    Lai, Charles P.; Kim, Edward Y.; Badr, Christian E.; Weissleder, Ralph; Mempel, Thorsten R.; Tannous, Bakhos A.; Breakefield, Xandra O.

    2015-01-01

    Accurate spatiotemporal assessment of extracellular vesicle (EV) delivery and cargo RNA translation requires specific and robust live-cell imaging technologies. Here we engineer optical reporters to label multiple EV populations for visualization and tracking of tumour EV release, uptake and exchange between cell populations both in culture and in vivo. Enhanced green fluorescence protein (EGFP) and tandem dimer Tomato (tdTomato) were fused at NH2-termini with a palmitoylation signal (PalmGFP, PalmtdTomato) for EV membrane labelling. To monitor EV-RNA cargo, transcripts encoding PalmtdTomato were tagged with MS2 RNA binding sequences and detected by co-expression of bacteriophage MS2 coat protein fused with EGFP. By multiplexing fluorescent and bioluminescent EV membrane reporters, we reveal the rapid dynamics of both EV uptake and translation of EV-delivered cargo mRNAs in cancer cells that occurred within 1-hour post-horizontal transfer between cells. These studies confirm that EV-mediated communication is dynamic and multidirectional between cells with delivery of functional mRNA. PMID:25967391

  9. 46 CFR 154.1814 - Cargo information cards.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo information cards. 154.1814 Section 154.1814... cards. (a) No person may operate a vessel unless a cargo information card for each cargo being... accessible to the person in charge of the watch. (b) When a vessel is moored at a terminal, the master shall...

  10. 46 CFR 154.320 - Cargo control stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Arrangements § 154.320 Cargo control stations. (a) Cargo control stations must be above the weather deck. (b) If a cargo control station is in accommodation, service, or control spaces or has access to such a space, the station must: (1) Be a gas safe space; (2) Have an access to the space that meets § 154.330...

  11. 46 CFR 154.320 - Cargo control stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Arrangements § 154.320 Cargo control stations. (a) Cargo control stations must be above the weather deck. (b) If a cargo control station is in accommodation, service, or control spaces or has access to such a space, the station must: (1) Be a gas safe space; (2) Have an access to the space that meets § 154.330...

  12. 46 CFR 154.320 - Cargo control stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Arrangements § 154.320 Cargo control stations. (a) Cargo control stations must be above the weather deck. (b) If a cargo control station is in accommodation, service, or control spaces or has access to such a space, the station must: (1) Be a gas safe space; (2) Have an access to the space that meets § 154.330...

  13. Recent developments in anticancer drug delivery using cell penetrating and tumor targeting peptides.

    PubMed

    Dissanayake, Shama; Denny, William A; Gamage, Swarna; Sarojini, Vijayalekshmi

    2017-03-28

    Efficient intracellular trafficking and targeted delivery to the site of action are essential to overcome the current drawbacks of cancer therapeutics. Cell Penetrating Peptides (CPPs) offer the possibility of efficient intracellular trafficking, and, therefore the development of drug delivery systems using CPPs as cargo carriers is an attractive strategy to address the current drawbacks of cancer therapeutics. Additionally, the possibility of incorporating Tumor Targeting Peptides (TTPs) into the delivery system provides the necessary drug targeting effect. Therefore the conjugation of CPPs and/or TTPs with therapeutics provides a potentially efficient method of improving intracellular drug delivery mechanisms. Peptides used as cargo carriers in DDS have been shown to enhance the cellular uptake of drugs and thereby provide an efficient therapeutic benefit over the drug on its own. After providing a brief overview of various drug targeting approaches, this review focusses on peptides as carriers and targeting moieties in drug-peptide covalent conjugates and summarizes the most recent literature examples where CPPs on their own or CPPs together with TTPs have been conjugated to anticancer drugs such as Doxorubicin, Methotrexate, Paclitaxel, Chlorambucil etc. A short section on CPPs used in multicomponent drug delivery systems is also included. Copyright © 2017 Elsevier B.V. All rights reserved.

  14. High-Throughput Identification of Combinatorial Ligands for DNA Delivery in Cell Culture

    NASA Astrophysics Data System (ADS)

    Svahn, Mathias G.; Rabe, Kersten S.; Barger, Geoffrey; EL-Andaloussi, Samir; Simonson, Oscar E.; Didier, Boturyn; Olivier, Renaudet; Dumy, Pascal; Brandén, Lars J.; Niemeyer, Christof M.; Smith, C. I. Edvard

    2008-10-01

    Finding the optimal combinations of ligands for tissue-specific delivery is tedious even if only a few well-established compounds are tested. The cargo affects the receptor-ligand interaction, especially when it is charged like DNA. The ligand should therefore be evaluated together with its cargo. Several viruses have been shown to interact with more than one receptor, for efficient internalization. We here present a DNA oligonucleotide-based method for inexpensive and rapid screening of biotin labeled ligands for combinatorial effects on cellular binding and uptake. The oligonucleotide complex was designed as a 44 bp double-stranded DNA oligonucleotide with one central streptavidin molecule and a second streptavidin at the terminus. The use of a highly advanced robotic platform ensured stringent processing and execution of the experiments. The oligonucleotides were fluorescently labeled and used for detection and analysis of cell-bound, internalized and intra-cellular compartmentalized constructs by an automated line-scanning confocal microscope, IN Cell Analyzer 3000. All possible combinations of 22 ligands were explored in sets of 2 and tested on 6 different human cell lines in triplicates. In total, 10 000 transfections were performed on the automation platform. Cell-specific combinations of ligands were identified and their relative position on the scaffold oligonucleotide was found to be of importance. The ligands were found to be cargo dependent, carbohydrates were more potent for DNA delivery whereas cell penetrating peptides were more potent for delivery of less charged particles.

  15. Tri-membrane nanoparticles produced by combining liposome fusion and a novel patchwork of bicelles to overcome endosomal and nuclear membrane barriers to cargo delivery.

    PubMed

    Yamada, Asako; Mitsueda, Asako; Hasan, Mahadi; Ueda, Miho; Hama, Susumu; Warashina, Shota; Nakamura, Takashi; Harashima, Hideyoshi; Kogure, Kentaro

    2016-03-01

    Membrane fusion is a rational strategy for crossing intracellular membranes that present barriers to liposomal nanocarrier-mediated delivery of plasmid DNA into the nucleus of non-dividing cells, such as dendritic cells. Based on this strategy, we previously developed nanocarriers consisting of a nucleic acid core particle coated with four lipid membranes [Akita, et al., Biomaterials, 2009, 30, 2940-2949]. However, including the endosomal membrane and two nuclear membranes, cells possess three intracellular membranous barriers. Thus, after entering the nucleus, nanoparticles coated with four membranes would still have one lipid membrane remaining, and could impede cargo delivery. Until now, coating a core particle with an odd number of lipid membranes was challenging. To produce nanocarriers with an odd number of lipid membranes, we developed a novel coating method involving lipid nano-discs, also known as bicelles, as a material for packaging DNA in a carrier with an odd number of lipid membranes. In this procedure, bicelles fuse to form an outer coating that resembles a patchwork quilt, which allows the preparation of nanoparticles coated with only three lipid membranes. Moreover, the transfection activity of dendritic cells with these three-membrane nanoparticles was higher than that for nanoparticles coated with four lipid membranes. In summary, we developed novel nanoparticles coated with an odd number of lipid membranes using the novel "patchwork-packaging method" to deliver plasmid DNA into the nucleus via membrane fusion.

  16. Minneapolis-Saint Paul air cargo study

    DOT National Transportation Integrated Search

    2001-12-01

    The Minneapolis-Saint Paul Task Force commissioned this study. It was established to address the apparent decline in air cargo through Minneapolis-Saint Paul airport in recent years. Distribution services, especially international air cargo, are stra...

  17. On the suitability of nanocrystalline ferrites as a magnetic carrier for drug delivery: functionalization, conjugation and drug release kinetics.

    PubMed

    Rana, S; Gallo, A; Srivastava, R S; Misra, R D K

    2007-03-01

    Superparamagnetic nickel ferrite nanoparticles functionalized with polyvinyl alcohol, polyethylene oxide and polymethacrylic acid (PMAA) polymers and subsequently conjugated with doxorubicin anti-cancer drug are studied for their use as a magnetic carrier for drug delivery. Fourier transform infrared spectroscopy enabled examination of the ability of the nanoparticles to be functionalized with polymers and conjugated with doxorubicin drug. The functionalized polymer-coated nanocrystalline nickel ferrites retain the magnetic characteristics of non-functionalized nanocrystalline nickel ferrites (superparamagnetism, absence of hysteresis, remanence and coercivity at room temperature), encouraging their application as a magnetic carrier for drug delivery. The PMAA-coated nanoferrites are demonstrated as being a potentially superior magnetically targeted drug carrier based on FTIR results and drug release kinetics in the absence and presence of an external magnetic field.

  18. 46 CFR 308.511 - Cancellation of Open Cargo Policy.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 8 2014-10-01 2014-10-01 false Cancellation of Open Cargo Policy. 308.511 Section 308.511 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Open Policy War Risk Cargo Insurance § 308.511 Cancellation of Open Cargo...

  19. 46 CFR 153.333 - Cargo pump discharge pressure gauge.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo pump discharge pressure gauge. 153.333 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.333 Cargo pump discharge pressure gauge. Each cargo pump within a pump-room must...

  20. 46 CFR 153.285 - Valving for cargo pump manifolds.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Valving for cargo pump manifolds. 153.285 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Piping Systems and Cargo Handling Equipment § 153.285 Valving for cargo pump manifolds. (a) When cargo...

  1. 46 CFR 153.333 - Cargo pump discharge pressure gauge.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo pump discharge pressure gauge. 153.333 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.333 Cargo pump discharge pressure gauge. Each cargo pump within a pump-room must...

  2. 46 CFR 153.333 - Cargo pump discharge pressure gauge.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo pump discharge pressure gauge. 153.333 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.333 Cargo pump discharge pressure gauge. Each cargo pump within a pump-room must...

  3. 46 CFR 153.333 - Cargo pump discharge pressure gauge.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo pump discharge pressure gauge. 153.333 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.333 Cargo pump discharge pressure gauge. Each cargo pump within a pump-room must...

  4. 46 CFR 153.333 - Cargo pump discharge pressure gauge.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo pump discharge pressure gauge. 153.333 Section 153... SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.333 Cargo pump discharge pressure gauge. Each cargo pump within a pump-room must...

  5. 14 CFR 27.787 - Cargo and baggage compartments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AIRCRAFT AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT Design and Construction Personnel and Cargo... for its placarded maximum weight of contents and for the critical load distributions at the... authorized weight of cargo and baggage at the critical loading distribution. (d) If cargo compartment lamps...

  6. 46 CFR 153.975 - Preparation for cargo transfer.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer... facility is made before the cargo transfer piping is joined. (c) Any supplemental inert gas supply...

  7. 46 CFR 153.975 - Preparation for cargo transfer.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer... facility is made before the cargo transfer piping is joined. (c) Any supplemental inert gas supply...

  8. 46 CFR 153.975 - Preparation for cargo transfer.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer... facility is made before the cargo transfer piping is joined. (c) Any supplemental inert gas supply...

  9. 46 CFR 153.975 - Preparation for cargo transfer.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer... facility is made before the cargo transfer piping is joined. (c) Any supplemental inert gas supply...

  10. 46 CFR 154.1828 - Spaces containing cargo vapor: Entry.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Spaces containing cargo vapor: Entry. 154.1828 Section... Spaces containing cargo vapor: Entry. (a) No person may enter a cargo handling space without the... allowing anyone to enter a cargo handling space, the master shall ensure that: (1) The space is free of...

  11. 46 CFR 154.1828 - Spaces containing cargo vapor: Entry.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Spaces containing cargo vapor: Entry. 154.1828 Section... Spaces containing cargo vapor: Entry. (a) No person may enter a cargo handling space without the... allowing anyone to enter a cargo handling space, the master shall ensure that: (1) The space is free of...

  12. 46 CFR 154.1828 - Spaces containing cargo vapor: Entry.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Spaces containing cargo vapor: Entry. 154.1828 Section... Spaces containing cargo vapor: Entry. (a) No person may enter a cargo handling space without the... allowing anyone to enter a cargo handling space, the master shall ensure that: (1) The space is free of...

  13. Cellular Delivery of Nanoparticles Revealed with Combined Optical and Isotopic Nanoscopy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Proetto, Maria T.; Anderton, Christopher R.; Hu, Dehong

    Synthetic drug-carrying nanomaterials offer great potential as targeted cellular delivery vehicles. Typically, their size, morphology, surface chemistry and stability are optimized in order to control their effect on drug release kinetics, cellular uptake pathways, efficiency and site of action. However, methods to track the carriers and their cargo independently at the micro- and nanoscale have been severely underutilized preventing the correlation between structure and function. Here we show that by using combined optical and isotopic nanoscopy we can track the uptake in cancer cells and subsequent drug release of a Pt(II)-loaded anticancer nanoparticle (NP) system. We found that by directlymore » polymerizing an oxaliplatin analogue containing a norbornyl moiety amenable to polymerization via ring opening metathesis polymerization (ROMP) we could generate amphiphiles in one pot. Spontaneous self-assembly of the drug-containing polymers in aqueous solution led to well-defined NPs in a reproducible manner. Our results demonstrate that the covalently loaded NPs are equipotent with free oxaliplatin and are taken up intact via endocytic pathways before release of the cytotoxic cargo. This was confirmed by super resolution fluorescence structured illumination microscopy (SIM) and nanoscale secondary ion mass spectrometry (NanoSIMS). We anticipate that this type of multimodal cellular tracking of NP and drug will bridge the knowledge gap between particle structure and performance for the vast array of currently generalizable systems in the literature. Furthermore, the use of covalently loaded NP drug systems should allow development of more stable, reproducible and site specific nanodelivery agents.« less

  14. 46 CFR 153.972 - Connecting a cargo hose.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Connecting a cargo hose. 153.972 Section 153.972 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  15. 46 CFR 153.972 - Connecting a cargo hose.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Connecting a cargo hose. 153.972 Section 153.972 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  16. 46 CFR 153.972 - Connecting a cargo hose.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Connecting a cargo hose. 153.972 Section 153.972 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  17. 46 CFR 153.953 - Signals during cargo transfer.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Signals during cargo transfer. 153.953 Section 153.953 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  18. 46 CFR 153.972 - Connecting a cargo hose.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Connecting a cargo hose. 153.972 Section 153.972 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  19. 46 CFR 153.972 - Connecting a cargo hose.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Connecting a cargo hose. 153.972 Section 153.972 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations Cargo Transfer...

  20. 46 CFR 154.500 - Cargo and process piping standards.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Equipment Cargo and Process Piping Systems § 154.500 Cargo and process piping standards. The cargo liquid and vapor piping and process piping systems must meet the requirements in §§ 154.503 through 154.562... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo and process piping standards. 154.500 Section 154...

  1. 46 CFR 153.935a - Storage of cargo samples.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Storage of cargo samples. 153.935a Section 153.935a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... § 153.935a Storage of cargo samples. (a) The master shall make sure that any cargo samples are stored in...

  2. 46 CFR 32.50-30 - Cargo hose-TB/ALL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Cargo hose-TB/ALL. 32.50-30 Section 32.50-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Pumps, Piping, and Hose for Cargo Handling § 32.50-30 Cargo hose—TB/ALL. Cargo hose carried on...

  3. 46 CFR 32.50-30 - Cargo hose-TB/ALL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Cargo hose-TB/ALL. 32.50-30 Section 32.50-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Pumps, Piping, and Hose for Cargo Handling § 32.50-30 Cargo hose—TB/ALL. Cargo hose carried on...

  4. 46 CFR 32.50-30 - Cargo hose-TB/ALL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Cargo hose-TB/ALL. 32.50-30 Section 32.50-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Pumps, Piping, and Hose for Cargo Handling § 32.50-30 Cargo hose—TB/ALL. Cargo hose carried on...

  5. 46 CFR 32.50-30 - Cargo hose-TB/ALL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Cargo hose-TB/ALL. 32.50-30 Section 32.50-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Pumps, Piping, and Hose for Cargo Handling § 32.50-30 Cargo hose—TB/ALL. Cargo hose carried on...

  6. 46 CFR 32.50-30 - Cargo hose-TB/ALL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Cargo hose-TB/ALL. 32.50-30 Section 32.50-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Pumps, Piping, and Hose for Cargo Handling § 32.50-30 Cargo hose—TB/ALL. Cargo hose carried on...

  7. ISS Commercial Cargo Service: Requirements and Constraints Summary

    NASA Technical Reports Server (NTRS)

    Thorn, Valin; Lemmons, Neil; Scheutz, Matt

    2005-01-01

    A viewgraph presentation describing the fundamental requirements and constraints necessary to begin the acquisition of an International Space Station commercial cargo service is presented. The topics include: 1) Background; 2) Philosophy; 3) Cargo Balance; 4) Cargo Types; 5) ICCS Flight Rate; 6) Late and Early Access; 7) Power to Payloads; 8) Mating Locatin Options; 9) ISS Docking and Berthing; 10) Vehicle Stay Time; 11) ISS Resource Availability; 12) Robotic and EVA Compatability; 13) Return Cargo; and 14) Key Requirements Summary.

  8. Foundation for Heavy Lift: Early Developments in the Ares V Cargo Launch Vehicle

    NASA Technical Reports Server (NTRS)

    Sumrall, John P.; McArthur, J. Craig

    2007-01-01

    The Ares V Cargo Launch Vehicle (CaLV) is NASA's primary vessel for safe, reliable delivery of the Lunar Surface Access Module (LSAM) and other resources into Earth orbit, as articulated in the U.S. Vision for Space Exploration.' The Ares V launch concept is shown. The foundation for this heavy-lift companion to the Ares I Crew Launch Vehicle (CLV) is taking shape within NASA and with its government and industry partners. This paper will address accomplishments in the Ares V Launch Vehicle during 2006 and 2007 and offer a preview of future activities.

  9. 46 CFR 148.70 - Dangerous cargo manifest; general.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Dangerous cargo manifest; general. 148.70 Section 148.70 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.70 Dangerous cargo...

  10. 46 CFR 148.70 - Dangerous cargo manifest; general.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Dangerous cargo manifest; general. 148.70 Section 148.70 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.70 Dangerous cargo...

  11. 46 CFR 148.70 - Dangerous cargo manifest; general.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Dangerous cargo manifest; general. 148.70 Section 148.70 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.70 Dangerous cargo...

  12. 46 CFR 148.70 - Dangerous cargo manifest; general.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Dangerous cargo manifest; general. 148.70 Section 148.70 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.70 Dangerous cargo...

  13. 46 CFR 148.80 - Supervision of cargo transfer.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Supervision of cargo transfer. 148.80 Section 148.80 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.80 Supervision of cargo...

  14. 46 CFR 148.80 - Supervision of cargo transfer.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Supervision of cargo transfer. 148.80 Section 148.80 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.80 Supervision of cargo...

  15. 46 CFR 148.80 - Supervision of cargo transfer.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Supervision of cargo transfer. 148.80 Section 148.80 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.80 Supervision of cargo...

  16. 46 CFR 148.80 - Supervision of cargo transfer.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Supervision of cargo transfer. 148.80 Section 148.80 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING Minimum Transportation Requirements § 148.80 Supervision of cargo...

  17. Enhanced Probiotic Potential of Lactobacillus reuteri When Delivered as a Biofilm on Dextranomer Microspheres That Contain Beneficial Cargo

    PubMed Central

    Navarro, Jason B.; Mashburn-Warren, Lauren; Bakaletz, Lauren O.; Bailey, Michael T.; Goodman, Steven D.

    2017-01-01

    As with all orally consumed probiotics, the Gram-positive bacterium Lactobacillus reuteri encounters numerous challenges as it transits through the gastrointestinal tract of the host, including low pH, effectors of the host immune system, as well as competition with commensal and pathogenic bacteria, all of which can greatly reduce the availability of live bacteria for therapeutic purposes. Recently we showed that L. reuteri, when adhered in the form of a biofilm to a semi-permeable biocompatible dextranomer microsphere, reduces the incidence of necrotizing enterocolitis by 50% in a well-defined animal model following delivery of a single prophylactic dose. Herein, using the same semi-permeable microspheres, we showed that providing compounds beneficial to L. reuteri as diffusible cargo within the microsphere lumen resulted in further advantageous effects including glucosyltransferase-dependent bacterial adherence to the microsphere surface, resistance of bound bacteria against acidic conditions, enhanced adherence of L. reuteri to human intestinal epithelial cells in vitro, and facilitated production of the antimicrobial compound reuterin and the anti-inflammatory molecule histamine. These data support continued development of this novel probiotic formulation as an adaptable and effective means for targeted delivery of cargo beneficial to the probiotic bacterium. PMID:28396655

  18. Cargo Container Imaging with Gaseous Detectors

    NASA Astrophysics Data System (ADS)

    Forest, Tony

    2006-10-01

    The gas electron multiplier (GEM) , developed at CERN by Fabio Sauli, represents the latest innovation in micropattern gaseous detectors and has been utilized as a preamplification stage in applications ranging from fundamental physics experiments to medical imaging. Although cargo container inspection systems are currently in place using gamma-rays or X-rays, they are predominantly designed with a resolution to detect contraband. Current imaging systems also suffer from false alarms due to naturally radioactive cargo when radiation portal monitors are used for passive detection of nuclear materials. Detection of small shielded radioactive elements is even more problematic. Idaho State University has been developing a system to image cargo containers in order to detect small shielded radioactive cargo. The possible application of an imaging system with gas electron multiplication will be shown along with preliminary images using gaseous detectors instead of the scintillators currently in use.

  19. Low Energy Accelerators for Cargo Inspection

    NASA Astrophysics Data System (ADS)

    Tang, Chuanxiang

    Cargo inspection by X-rays has become essential for seaports and airports. With the emphasis on homeland security issues, the identification of dangerous things, such as explosive items and nuclear materials, is the key feature of a cargo inspection system. And new technologies based on dual energy X-rays, neutrons and monoenergetic X-rays have been studied to achieve sufficiently good material identification. An interpretation of the principle of X-ray cargo inspection technology and the features of X-ray sources are presented in this article. As most of the X-ray sources are based on RF electron linear accelerators (linacs), we give a relatively detailed description of the principle and characteristics of linacs. Cargo inspection technologies based on neutron imaging, neutron analysis, nuclear resonance fluorescence and computer tomography are also mentioned here. The main vendors and their products are summarized at the end of the article.

  20. Transportation of Nanoscale Cargoes by Myosin Propelled Actin Filaments

    PubMed Central

    Persson, Malin; Gullberg, Maria; Tolf, Conny; Lindberg, A. Michael; Månsson, Alf; Kocer, Armagan

    2013-01-01

    Myosin II propelled actin filaments move ten times faster than kinesin driven microtubules and are thus attractive candidates as cargo-transporting shuttles in motor driven lab-on-a-chip devices. In addition, actomyosin-based transportation of nanoparticles is useful in various fundamental studies. However, it is poorly understood how actomyosin function is affected by different number of nanoscale cargoes, by cargo size, and by the mode of cargo-attachment to the actin filament. This is studied here using biotin/fluorophores, streptavidin, streptavidin-coated quantum dots, and liposomes as model cargoes attached to monomers along the actin filaments (“side-attached”) or to the trailing filament end via the plus end capping protein CapZ. Long-distance transportation (>100 µm) could be seen for all cargoes independently of attachment mode but the fraction of motile filaments decreased with increasing number of side-attached cargoes, a reduction that occurred within a range of 10–50 streptavidin molecules, 1–10 quantum dots or with just 1 liposome. However, as observed by monitoring these motile filaments with the attached cargo, the velocity was little affected. This also applied for end-attached cargoes where the attachment was mediated by CapZ. The results with side-attached cargoes argue against certain models for chemomechanical energy transduction in actomyosin and give important insights of relevance for effective exploitation of actomyosin-based cargo-transportation in molecular diagnostics and other nanotechnological applications. The attachment of quantum dots via CapZ, without appreciable modulation of actomyosin function, is useful in fundamental studies as exemplified here by tracking with nanometer accuracy. PMID:23437074

  1. 46 CFR 154.412 - Cargo tank corrosion allowance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... allowance if the cargo tank: (a) is located in a space that does not have inert gas or dry air; or (b... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo...

  2. 46 CFR 154.412 - Cargo tank corrosion allowance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... allowance if the cargo tank: (a) is located in a space that does not have inert gas or dry air; or (b... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo...

  3. 46 CFR 154.412 - Cargo tank corrosion allowance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... allowance if the cargo tank: (a) is located in a space that does not have inert gas or dry air; or (b... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo...

  4. 46 CFR 151.25-2 - Cargo handling space.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo handling space. 151.25-2 Section 151.25-2 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-2 Cargo handling space. Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces...

  5. 46 CFR 151.25-2 - Cargo handling space.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo handling space. 151.25-2 Section 151.25-2 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-2 Cargo handling space. Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces...

  6. 46 CFR 69.67 - Marking of cargo spaces.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Marking of cargo spaces. 69.67 Section 69.67 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DOCUMENTATION AND MEASUREMENT OF VESSELS MEASUREMENT OF VESSELS Convention Measurement System § 69.67 Marking of cargo spaces. Cargo spaces used in...

  7. 46 CFR 151.25-2 - Cargo handling space.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo handling space. 151.25-2 Section 151.25-2 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-2 Cargo handling space. Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces...

  8. 46 CFR 69.67 - Marking of cargo spaces.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 2 2011-10-01 2011-10-01 false Marking of cargo spaces. 69.67 Section 69.67 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DOCUMENTATION AND MEASUREMENT OF VESSELS MEASUREMENT OF VESSELS Convention Measurement System § 69.67 Marking of cargo spaces. Cargo spaces used in...

  9. 46 CFR 151.25-2 - Cargo handling space.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo handling space. 151.25-2 Section 151.25-2 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-2 Cargo handling space. Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces...

  10. 46 CFR 69.67 - Marking of cargo spaces.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 2 2012-10-01 2012-10-01 false Marking of cargo spaces. 69.67 Section 69.67 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DOCUMENTATION AND MEASUREMENT OF VESSELS MEASUREMENT OF VESSELS Convention Measurement System § 69.67 Marking of cargo spaces. Cargo spaces used in...

  11. 46 CFR 151.25-2 - Cargo handling space.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo handling space. 151.25-2 Section 151.25-2 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Environmental Control § 151.25-2 Cargo handling space. Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces...

  12. 46 CFR 69.67 - Marking of cargo spaces.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 2 2014-10-01 2014-10-01 false Marking of cargo spaces. 69.67 Section 69.67 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DOCUMENTATION AND MEASUREMENT OF VESSELS MEASUREMENT OF VESSELS Convention Measurement System § 69.67 Marking of cargo spaces. Cargo spaces used in...

  13. 46 CFR 69.67 - Marking of cargo spaces.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 2 2013-10-01 2013-10-01 false Marking of cargo spaces. 69.67 Section 69.67 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DOCUMENTATION AND MEASUREMENT OF VESSELS MEASUREMENT OF VESSELS Convention Measurement System § 69.67 Marking of cargo spaces. Cargo spaces used in...

  14. Raffaello Multi-Purpose Logistics Module (MPLM) in Discovery Cargo Bay

    NASA Technical Reports Server (NTRS)

    2005-01-01

    Launched on July 26, 2005 from the Kennedy Space Center in Florida, STS-114 was classified as Logistics Flight 1. Among the Station-related activities of the mission were the delivery of new supplies and the replacement of one of the orbital outpost's Control Moment Gyroscopes (CMGs). STS-114 also carried the Raffaello Multi-Purpose Logistics Module (MPLM) and the External Stowage Platform-2. Back dropped by popcorn-like clouds, the MPLM can be seen in the cargo bay as Discovery undergoes rendezvous and docking operations. Cosmonaut Sergei K. Kriklev, Expedition 11 Commander, and John L. Phillips, NASA Space Station officer and flight engineer photographed the spacecraft from the International Space Station (ISS).

  15. Raffaello Multi-Purpose Logistics Module (MPLM) in Discovery Cargo Bay

    NASA Technical Reports Server (NTRS)

    2005-01-01

    Launched on July 26 2005 from the Kennedy Space Center in Florida, STS-114 was classified as Logistics Flight 1. Among the Station-related activities of the mission were the delivery of new supplies and the replacement of one of the orbital outpost's Control Moment Gyroscopes (CMGs). STS-114 also carried the Raffaello Multi-Purpose Logistics Module (MPLM) and the External Stowage Platform-2. Back dropped by popcorn-like clouds, the MPLM can be seen in the cargo bay as Discovery undergoes rendezvous and docking operations. Cosmonaut Sergei K. Kriklev, Expedition 11 Commander, and John L. Phillips, NASA Space Station officer and flight engineer photographed the spacecraft from the International Space Station (ISS).

  16. 46 CFR 153.316 - Special cargo pumproom ventilation rate.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Handling Space Ventilation § 153.316 Special cargo pumproom ventilation rate. When Table 1...

  17. 46 CFR 153.316 - Special cargo pumproom ventilation rate.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Handling Space Ventilation § 153.316 Special cargo pumproom ventilation rate. When Table 1...

  18. 46 CFR 153.316 - Special cargo pumproom ventilation rate.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Handling Space Ventilation § 153.316 Special cargo pumproom ventilation rate. When Table 1...

  19. 46 CFR 153.316 - Special cargo pumproom ventilation rate.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Handling Space Ventilation § 153.316 Special cargo pumproom ventilation rate. When Table 1...

  20. 46 CFR 153.316 - Special cargo pumproom ventilation rate.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Handling Space Ventilation § 153.316 Special cargo pumproom ventilation rate. When Table 1...

  1. Controlling Cargo Trafficking in Multicomponent Membranes.

    PubMed

    Curk, Tine; Wirnsberger, Peter; Dobnikar, Jure; Frenkel, Daan; Šarić, Anđela

    2018-04-27

    Biological membranes typically contain a large number of different components dispersed in small concentrations in the main membrane phase, including proteins, sugars, and lipids of varying geometrical properties. Most of these components do not bind the cargo. Here, we show that such "inert" components can be crucial for the precise control of cross-membrane trafficking. Using a statistical mechanics model and molecular dynamics simulations, we demonstrate that the presence of inert membrane components of small isotropic curvatures dramatically influences cargo endocytosis, even if the total spontaneous curvature of such a membrane remains unchanged. Curved lipids, such as cholesterol, as well as asymmetrically included proteins and tethered sugars can, therefore, actively participate in the control of the membrane trafficking of nanoscopic cargo. We find that even a low-level expression of curved inert membrane components can determine the membrane selectivity toward the cargo size and can be used to selectively target membranes of certain compositions. Our results suggest a robust and general method of controlling cargo trafficking by adjusting the membrane composition without needing to alter the concentration of receptors or the average membrane curvature. This study indicates that cells can prepare for any trafficking event by incorporating curved inert components in either of the membrane leaflets.

  2. Motility states in bidirectional cargo transport

    NASA Astrophysics Data System (ADS)

    Klein, Sarah; Appert-Rolland, Cécile; Santen, Ludger

    2015-09-01

    Intracellular cargos which are transported by molecular motors move stochastically along cytoskeleton filaments. In particular for bidirectionally transported cargos it is an open question whether the characteristics of their motion can result from pure stochastic fluctuations or whether some coordination of the motors is needed. The results of a mean-field (MF) model of cargo-motors dynamics proposed by Müller et al. (Müller M. J. et al., Proc. Natl. Acad. Sci. U.S.A., 105 (2008) 4609) suggest the existence of states which are characterized by a symmetric bimodal distribution of cargo velocities. These states would result from a stochastic tug of war. Here we analyze the influence of the MF assumption on the cargo motion by considering a model that takes explicitly the position of each motor into account. We find that those states with symmetric bimodal distributions then disappear. As the MF model implicitly assumes some stepping synchronization between motors, we introduce a partial synchronization via an artificial mutual motor-motor activation, and show that the results of the MF model are then recovered but, even in this favorable case, only in the limit of a strong motor-motor activation and of a high number of motors. We conclude that the MF assumption is not relevant for intracellular transport.

  3. 46 CFR 148.02-3 - Dangerous cargo manifest.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Dangerous cargo manifest. 148.02-3 Section 148.02-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DANGEROUS CARGOES CARRIAGE OF SOLID HAZARDOUS MATERIALS IN BULK Vessel Requirements § 148.02-3 Dangerous cargo manifest. (a) Each vessel, except...

  4. 46 CFR 153.953 - Signals during cargo transfer.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Signals during cargo transfer. 153.953 Section 153.953 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.953 Signals during cargo transfer. The master shall ensure that: (a) The tankship displays a...

  5. 46 CFR 153.953 - Signals during cargo transfer.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Signals during cargo transfer. 153.953 Section 153.953 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.953 Signals during cargo transfer. The master shall ensure that: (a) The tankship displays a...

  6. 46 CFR 153.953 - Signals during cargo transfer.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Signals during cargo transfer. 153.953 Section 153.953 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.953 Signals during cargo transfer. The master shall ensure that: (a) The tankship displays a...

  7. 46 CFR 153.953 - Signals during cargo transfer.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Signals during cargo transfer. 153.953 Section 153.953 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES SHIPS... Procedures § 153.953 Signals during cargo transfer. The master shall ensure that: (a) The tankship displays a...

  8. The promise of air cargo: System aspects and vehicle design

    NASA Technical Reports Server (NTRS)

    Whitehead, A. H., Jr.

    1976-01-01

    The current operation of the air cargo system is reviewed. An assessment of the future of air cargo is provided by: (1) analyzing statistics and trends, (2) by noting system problems and inefficiencies, (3) by analyzing characteristics of 'air eligible' commodities, and (4) by showing the promise of new technology for future cargo aircraft with significant improvements in costs and efficiency. The following topics are discussed: (1) air cargo demand forecasts; (2) economics of air cargo transport; (3) the integrated air cargo system; (4) evolution of airfreighter design; and (5) the span distributed load concept.

  9. Dual-body magnetic helical robot for drilling and cargo delivery in human blood vessels

    NASA Astrophysics Data System (ADS)

    Lee, Wonseo; Jeon, Seungmun; Nam, Jaekwang; Jang, Gunhee

    2015-05-01

    We propose a novel dual-body magnetic helical robot (DMHR) manipulated by a magnetic navigation system. The proposed DMHR can generate helical motions to navigate in human blood vessels and to drill blood clots by an external rotating magnetic field. It can also generate release motions which are relative rotational motions between dual-bodies to release the carrying cargos to a target region by controlling the magnitude of an external magnetic field. Constraint equations were derived to selectively manipulate helical and release motions by controlling external magnetic fields. The DMHR was prototyped and various experiments were conducted to demonstrate its motions and verify its manipulation methods.

  10. 14 CFR 296.3 - Indirect cargo air carrier.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 4 2012-01-01 2012-01-01 false Indirect cargo air carrier. 296.3 Section... PROCEEDINGS) ECONOMIC REGULATIONS INDIRECT AIR TRANSPORTATION OF PROPERTY General § 296.3 Indirect cargo air carrier. An indirect cargo air carrier is any U.S. citizen who undertakes to engage indirectly in air...

  11. 14 CFR 296.3 - Indirect cargo air carrier.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 4 2013-01-01 2013-01-01 false Indirect cargo air carrier. 296.3 Section... PROCEEDINGS) ECONOMIC REGULATIONS INDIRECT AIR TRANSPORTATION OF PROPERTY General § 296.3 Indirect cargo air carrier. An indirect cargo air carrier is any U.S. citizen who undertakes to engage indirectly in air...

  12. 14 CFR 296.3 - Indirect cargo air carrier.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 4 2014-01-01 2014-01-01 false Indirect cargo air carrier. 296.3 Section... PROCEEDINGS) ECONOMIC REGULATIONS INDIRECT AIR TRANSPORTATION OF PROPERTY General § 296.3 Indirect cargo air carrier. An indirect cargo air carrier is any U.S. citizen who undertakes to engage indirectly in air...

  13. 14 CFR 296.3 - Indirect cargo air carrier.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Indirect cargo air carrier. 296.3 Section... PROCEEDINGS) ECONOMIC REGULATIONS INDIRECT AIR TRANSPORTATION OF PROPERTY General § 296.3 Indirect cargo air carrier. An indirect cargo air carrier is any U.S. citizen who undertakes to engage indirectly in air...

  14. 46 CFR 154.1850 - Entering cargo handling spaces.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Entering cargo handling spaces. 154.1850 Section 154... cargo handling spaces. (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following: (1) Spaces containing cargo pumps...

  15. 46 CFR 154.1850 - Entering cargo handling spaces.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Entering cargo handling spaces. 154.1850 Section 154... cargo handling spaces. (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following: (1) Spaces containing cargo pumps...

  16. 46 CFR 154.1850 - Entering cargo handling spaces.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Entering cargo handling spaces. 154.1850 Section 154... cargo handling spaces. (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following: (1) Spaces containing cargo pumps...

  17. 46 CFR 154.1850 - Entering cargo handling spaces.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Entering cargo handling spaces. 154.1850 Section 154... cargo handling spaces. (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following: (1) Spaces containing cargo pumps...

  18. 46 CFR 154.1850 - Entering cargo handling spaces.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Entering cargo handling spaces. 154.1850 Section 154... cargo handling spaces. (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following: (1) Spaces containing cargo pumps...

  19. 49 CFR 1548.15 - Access to cargo: Security threat assessments for individuals having unescorted access to cargo.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Access to cargo: Security threat assessments for... SECURITY CIVIL AVIATION SECURITY INDIRECT AIR CARRIER SECURITY § 1548.15 Access to cargo: Security threat... must successfully complete a security threat assessment or comparable security threat assessment...

  20. The Primary Mechanism of Cellular Internalization for a Short Cell- Penetrating Peptide as a Nano-Scale Delivery System.

    PubMed

    Liu, Betty R; Huang, Yue-Wern; Korivi, Mallikarjuna; Lo, Shih-Yen; Aronstam, Robert S; Lee, Han-Jung

    2017-01-01

    Development of effective drug delivery systems (DDS) is a critical issue in health care and medicine. Advances in molecular biology and nanotechnology have allowed the introduction of nanomaterial-based drug delivery systems. Cell-penetrating peptides (CPPs) can form the basis of drug delivery systems by virtue of their ability to support the transport of cargoes into the cell. Potential cargoes include proteins, DNA, RNA, liposomes, and nanomaterials. These cargoes generally retain their bioactivities upon entering cells. In the present study, the smallest, fully-active lactoferricin-derived CPP, L5a is used to demonstrate the primary contributor of cellular internalization. The secondary helical structure of L5a encompasses symmetrical positive charges around the periphery. The contributions of cell-specificity, peptide length, concentration, zeta potential, particle size, and spatial structure of the peptides were examined, but only zeta potential and spatial structure affected protein transduction efficiency. FITC-labeled L5a appeared to enter cells via direct membrane translocation insofar as endocytic modulators did not block FITC-L5a entry. This is the same mechanism of protein transduction active in Cy5 labeled DNA delivery mediated by FITC-L5a. A significant reduction of transduction efficiency was observed with structurally incomplete FITC-L5a formed by tryptic destruction, in which case the mechanism of internalization switched to a classical energydependent endocytosis pathway. These results support the continued development of the non-cytotoxic L5a as an efficient tool for drug delivery. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.

  1. Recent in vivo advances in cell-penetrating peptide-assisted drug delivery.

    PubMed

    Kurrikoff, Kaido; Gestin, Maxime; Langel, Ülo

    2016-01-01

    Delivery of macromolecular drugs is an important field in medical research. However, macromolecules are usually unable to cross the cell membrane without the assistance of a delivery system. Cell penetrating peptides (CPPs) are unique tools to gain access to the cell interior and deliver a bioactive cargo into the cytosol or nucleus. In addition to macromolecular delivery, CPPs have been used to deliver smaller bioactive molecules. Therefore CPPs have become an intensive field of research for medical treatment. In this review, we highlight studies that include CPP in vivo disease models. We review different strategies and approaches that have been used, with specific attention on recent publications. The approaches that have been used include CPP-cargo covalent conjugation strategies and nanoparticle strategies. Various additional strategies have been used to achieve disease targeting, including active targeting, passive targeting, and combined active/passive strategies. As a result, delivery of various types of molecule has been achieved, including small drug molecules, proteins and nucleic acid-based macromolecules (e.g. siRNA, antisense nucleotides and plasmid DNA). Despite recent advances in the field, confusions surrounding CPP internalization mechanisms and intracellular trafficking are hindering the development of new and more efficient vectors. Nevertheless, the recent increase in the number of publications containing in vivo CPP utilization looks promising that the number of clinical trials would also increase in the near future.

  2. 46 CFR 150.130 - Loading a cargo on vessels carrying cargoes with which it is incompatible.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... it is incompatible. 150.130 Section 150.130 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... carrying cargoes with which it is incompatible. Except as described in § 150.160, the person in charge of a... any cargo in table I with which it is incompatible by two barriers such as formed by a: (1) Cofferdam...

  3. Membrane-targeting liquid crystal nanoparticles (LCNPs) for drug delivery

    NASA Astrophysics Data System (ADS)

    Nag, Okhil K.; Naciri, Jawad; Spillmann, Christopher M.; Delehanty, James B.

    2016-03-01

    In addition to maintaining the structural integrity of the cell, the plasma membrane regulates multiple important cellular processes, such as endocytosis and trafficking, apoptotic pathways and drug transport. The modulation or tracking of such cellular processes by means of controlled delivery of drugs or imaging agents via nanoscale delivery systems is very attractive. Nanoparticle-mediated delivery systems that mediate long-term residence (e.g., days) and controlled release of the cargoes in the plasma membrane while simultaneously not interfering with regular cellular physiology would be ideal for this purpose. Our laboratory has developed a plasma membrane-targeted liquid crystal nanoparticle (LCNP) formulation that can be loaded with dyes or drugs which can be slowly released from the particle over time. Here we highlight the utility of these nanopreparations for membrane delivery and imaging.

  4. 46 CFR 154.410 - Cargo tank sloshing loads.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo tank sloshing loads. 154.410 Section 154.410... Containment Systems § 154.410 Cargo tank sloshing loads. (a) For the calculation required under § 154.406 (a... be specially approved by the Commandant (CG-ENG). (b) If the sloshing loads affect the cargo tank...

  5. 46 CFR 154.410 - Cargo tank sloshing loads.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo tank sloshing loads. 154.410 Section 154.410... Containment Systems § 154.410 Cargo tank sloshing loads. (a) For the calculation required under § 154.406 (a... be specially approved by the Commandant (CG-522). (b) If the sloshing loads affect the cargo tank...

  6. 46 CFR 154.562 - Cargo hose: Hydrostatic test.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Hose § 154.562 Cargo hose: Hydrostatic test. Each cargo hose must pass a hydrostatic pressure test at ambient temperature of at least one and a half times its specified maximum working pressure but not more... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo hose: Hydrostatic test. 154.562 Section 154.562...

  7. Characterizing Density and Complexity of Imported Cargos

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Birrer, Nathaniel; Divin, Charles; Glenn, Steven

    X-ray inspection systems are used to detect radiological and nuclear threats in imported cargo. In order to better understand performance of these systems, system imaging capabilities and the characteristics of imported cargo need to be determined. This project involved calculation of the modulation transfer function as a metric of system imaging performance and a study of the density and inhomogeneity of imported cargos, which have been shown to correlate with human analysts, threat detection performance.

  8. 46 CFR 154.1810 - Cargo manual.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... leakage. (4) The use of the firefighting systems on the vessel. (5) The features of the cargo containment... detection systems. (x) Alarm or safety indication systems. (xi) Cargo jettisoning system. (xii) The system...) A description of gas detection systems and alarm or safety systems. (15) A description of the...

  9. 46 CFR 153.235 - Exceptions to cargo piping location restrictions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Exceptions to cargo piping location restrictions. 153... DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Containment Systems § 153.235 Exceptions to cargo piping location restrictions...

  10. 46 CFR 153.235 - Exceptions to cargo piping location restrictions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Exceptions to cargo piping location restrictions. 153... DANGEROUS CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Containment Systems § 153.235 Exceptions to cargo piping location restrictions...

  11. 49 CFR 1546.213 - Access to cargo: Security threat assessments for cargo personnel in the United States.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Access to cargo: Security threat assessments for...: Security threat assessments for cargo personnel in the United States. This section applies in the United...— (1) Each individual must successfully complete a security threat assessment or comparable security...

  12. Drosophila Pkaap regulates Rab4/Rab11-dependent traffic and Rab11 exocytosis of innate immune cargo

    PubMed Central

    Sorvina, Alexandra; Shandala, Tetyana; Brooks, Douglas A.

    2016-01-01

    ABSTRACT The secretion of immune-mediators is a critical step in the host innate immune response to pathogen invasion, and Rab GTPases have an important role in the regulation of this process. Rab4/Rab11 recycling endosomes are involved in the sorting of immune-mediators into specialist Rab11 vesicles that can traffic this cargo to the plasma membrane; however, how this sequential delivery process is regulated has yet to be fully defined. Here, we report that Drosophila Pkaap, an orthologue of the human dual-specific A-kinase-anchoring protein 2 or D-AKAP2 (also called AKAP10), appeared to have a nucleotide-dependent localisation to Rab4 and Rab11 endosomes. RNAi silencing of pkaap altered Rab4/Rab11 recycling endosome morphology, suggesting that Pkaap functions in cargo sorting and delivery in the secretory pathway. The depletion of pkaap also had a direct effect on Rab11 vesicle exocytosis and the secretion of the antimicrobial peptide Drosomycin at the plasma membrane. We propose that Pkaap has a dual role in antimicrobial peptide traffic and exocytosis, making it an essential component for the secretion of inflammatory mediators and the defence of the host against pathogens. PMID:27190105

  13. 46 CFR 154.411 - Cargo tank thermal loads.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo tank thermal loads. 154.411 Section 154.411... Containment Systems § 154.411 Cargo tank thermal loads. For the calculations required under § 154.406(a)(4... thermal loads for the cooling down periods of cargo tanks for design temperatures lower than −55 °C (−67...

  14. 46 CFR 154.411 - Cargo tank thermal loads.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo tank thermal loads. 154.411 Section 154.411... Containment Systems § 154.411 Cargo tank thermal loads. For the calculations required under § 154.406(a)(4... thermal loads for the cooling down periods of cargo tanks for design temperatures lower than −55 °C (−67...

  15. 46 CFR 154.560 - Cargo hose: Prototype test.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo hose: Prototype test. 154.560 Section 154.560... Hose § 154.560 Cargo hose: Prototype test. (a) Each cargo hose must be of a type that passes a prototype test at a pressure of at least five times its maximum working pressure at or below the minimum...

  16. Investigation of a thiolated polymer in gene delivery

    NASA Astrophysics Data System (ADS)

    Bacalocostantis, Irene

    Thiol-containing bioreducible polymers show significant potential as delivery vectors in gene therapy, a rapidly growing field which seeks to treat genetic-based disorders by delivering functional synthetic genes to diseased cells. Studies have shown that thiolated polymers exhibit improved biodegradability and prolonged in vivo circulation times over non-thiolated polymers. However, the extent to which thiol concentrations impact the carrier's delivery potential has not been well explored. The aim of this dissertation is to investigate how relative concentrations of free thiols and disulfide crosslinks impact a polymeric carriers delivery performance with respect to DNA packaging, complex stability, cargo protection, gene release, internalization efficiency and cytotoxicity. To accomplish this goal, several fluorescent polymers containing varying concentrations of thiol groups were synthesized by conjugating thiol-pendant chains onto the primary amines of cationic poly(allylamine). In vitro delivery assays and characterization techniques were employed to assess the effect of thiols in gene delivery.

  17. 46 CFR 153.438 - Cargo pressure or temperature alarms required.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo pressure or temperature alarms required. 153.438... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.438 Cargo pressure or temperature alarms required. (a...

  18. 46 CFR 153.438 - Cargo pressure or temperature alarms required.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo pressure or temperature alarms required. 153.438... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.438 Cargo pressure or temperature alarms required. (a...

  19. 46 CFR 153.438 - Cargo pressure or temperature alarms required.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo pressure or temperature alarms required. 153.438... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.438 Cargo pressure or temperature alarms required. (a...

  20. 46 CFR 153.438 - Cargo pressure or temperature alarms required.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo pressure or temperature alarms required. 153.438... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.438 Cargo pressure or temperature alarms required. (a...

  1. 46 CFR 153.438 - Cargo pressure or temperature alarms required.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo pressure or temperature alarms required. 153.438... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Temperature Control Systems § 153.438 Cargo pressure or temperature alarms required. (a...

  2. 46 CFR 308.545 - Facultative cargo policy, Form MA-316.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 308.545 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Iii-Facultative War Risk Cargo Insurance § 308.545 Facultative cargo policy, Form MA-316. The standard form of War Risk Facultative Cargo Policy, Form MA-316, may be obtained...

  3. 46 CFR 308.545 - Facultative cargo policy, Form MA-316.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 308.545 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Iii-Facultative War Risk Cargo Insurance § 308.545 Facultative cargo policy, Form MA-316. The standard form of War Risk Facultative Cargo Policy, Form MA-316, may be obtained...

  4. 46 CFR 308.545 - Facultative cargo policy, Form MA-316.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 308.545 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Iii-Facultative War Risk Cargo Insurance § 308.545 Facultative cargo policy, Form MA-316. The standard form of War Risk Facultative Cargo Policy, Form MA-316, may be obtained...

  5. 46 CFR 308.545 - Facultative cargo policy, Form MA-316.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 308.545 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Iii-Facultative War Risk Cargo Insurance § 308.545 Facultative cargo policy, Form MA-316. The standard form of War Risk Facultative Cargo Policy, Form MA-316, may be obtained...

  6. 46 CFR 308.545 - Facultative cargo policy, Form MA-316.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 308.545 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Facultative War Risk Cargo Insurance § 308.545 Facultative cargo policy, Form MA-316. The standard form of War Risk Facultative Cargo Policy, Form MA-316, may be obtained from...

  7. 46 CFR 154.701 - Cargo pressure and temperature control: General.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Cargo pressure and temperature control: General. 154.701... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.701 Cargo pressure and temperature control: General...

  8. 46 CFR 154.701 - Cargo pressure and temperature control: General.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Cargo pressure and temperature control: General. 154.701... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.701 Cargo pressure and temperature control: General...

  9. 46 CFR 154.701 - Cargo pressure and temperature control: General.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Cargo pressure and temperature control: General. 154.701... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.701 Cargo pressure and temperature control: General...

  10. 46 CFR 154.701 - Cargo pressure and temperature control: General.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo pressure and temperature control: General. 154.701... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.701 Cargo pressure and temperature control: General...

  11. 46 CFR 154.701 - Cargo pressure and temperature control: General.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo pressure and temperature control: General. 154.701... CARGOES SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.701 Cargo pressure and temperature control: General...

  12. Structural basis of cargo recognitions for class V myosins

    PubMed Central

    Wei, Zhiyi; Liu, Xiaotian; Yu, Cong; Zhang, Mingjie

    2013-01-01

    Class V myosins (MyoV), the most studied unconventional myosins, recognize numerous cargos mainly via the motor’s globular tail domain (GTD). Little is known regarding how MyoV-GTD recognizes such a diverse array of cargos specifically. Here, we solved the crystal structures of MyoVa-GTD in its apo-form and in complex with two distinct cargos, melanophilin and Rab interacting lysosomal protein-like 2. The apo-MyoVa-GTD structure indicates that most mutations found in patients with Griscelli syndrome, microvillus inclusion disease, or cancers or in “dilute” rodents likely impair the folding of GTD. The MyoVa-GTD/cargo complex structure reveals two distinct cargo-binding surfaces, one primarily via charge–charge interaction and the other mainly via hydrophobic interactions. Structural and biochemical analysis reveal the specific cargo-binding specificities of various isoforms of mammalian MyoV as well as very different cargo recognition mechanisms of MyoV between yeast and higher eukaryotes. The MyoVa-GTD structures resolved here provide a framework for future functional studies of vertebrate class V myosins. PMID:23798443

  13. 46 CFR 151.01-15 - Dangerous cargoes not specifically named.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Dangerous cargoes not specifically named. 151.01-15 Section 151.01-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES General § 151.01-15 Dangerous cargoes not...

  14. 46 CFR 151.01-15 - Dangerous cargoes not specifically named.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Dangerous cargoes not specifically named. 151.01-15 Section 151.01-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES General § 151.01-15 Dangerous cargoes not...

  15. 46 CFR 151.01-15 - Dangerous cargoes not specifically named.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Dangerous cargoes not specifically named. 151.01-15 Section 151.01-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES General § 151.01-15 Dangerous cargoes not...

  16. 46 CFR 151.01-15 - Dangerous cargoes not specifically named.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Dangerous cargoes not specifically named. 151.01-15 Section 151.01-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES General § 151.01-15 Dangerous cargoes not...

  17. 46 CFR 151.01-15 - Dangerous cargoes not specifically named.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Dangerous cargoes not specifically named. 151.01-15 Section 151.01-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES General § 151.01-15 Dangerous cargoes not...

  18. 46 CFR 153.254 - Cargo tank access.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks... vapor space described in § 153.354. (b) An access through a vertical cargo tank surface must be at least...

  19. 46 CFR 153.254 - Cargo tank access.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks... vapor space described in § 153.354. (b) An access through a vertical cargo tank surface must be at least...

  20. 46 CFR 153.254 - Cargo tank access.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks... vapor space described in § 153.354. (b) An access through a vertical cargo tank surface must be at least...

  1. 46 CFR 153.254 - Cargo tank access.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Tanks... vapor space described in § 153.354. (b) An access through a vertical cargo tank surface must be at least...

  2. System for inspection of stacked cargo containers

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Derenzo, Stephen

    The present invention relates to a system for inspection of stacked cargo containers. One embodiment of the invention generally comprises a plurality of stacked cargo containers arranged in rows or tiers, each container having a top, a bottom a first side, a second side, a front end, and a back end; a plurality of spacers arranged in rows or tiers; one or more mobile inspection devices for inspecting the cargo containers, wherein the one or more inspection devices are removeably disposed within the spacers, the inspection means configured to move through the spacers to detect radiation within the containers. Themore » invented system can also be configured to inspect the cargo containers for a variety of other potentially hazardous materials including but not limited to explosive and chemical threats.« less

  3. 46 CFR 153.336 - Special cargo pump or pumproom requirements.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Special cargo pump or pumproom requirements. 153.336... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Design and Equipment Cargo Pumprooms § 153.336 Special cargo pump or pumproom requirements. (a) When Table 1 refers to...

  4. 46 CFR 153.934 - Entry into spaces containing cargo vapor.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Entry into spaces containing cargo vapor. 153.934... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations General Vessel Safety § 153.934 Entry into spaces containing cargo vapor. (a) No person may enter a cargo...

  5. 46 CFR 153.934 - Entry into spaces containing cargo vapor.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Entry into spaces containing cargo vapor. 153.934... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations General Vessel Safety § 153.934 Entry into spaces containing cargo vapor. (a) No person may enter a cargo...

  6. 46 CFR 153.934 - Entry into spaces containing cargo vapor.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Entry into spaces containing cargo vapor. 153.934... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations General Vessel Safety § 153.934 Entry into spaces containing cargo vapor. (a) No person may enter a cargo...

  7. 46 CFR 153.934 - Entry into spaces containing cargo vapor.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Entry into spaces containing cargo vapor. 153.934... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations General Vessel Safety § 153.934 Entry into spaces containing cargo vapor. (a) No person may enter a cargo...

  8. 46 CFR 153.934 - Entry into spaces containing cargo vapor.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Entry into spaces containing cargo vapor. 153.934... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS Operations General Vessel Safety § 153.934 Entry into spaces containing cargo vapor. (a) No person may enter a cargo...

  9. 46 CFR 308.517 - Open Cargo Policy, Form MA-300.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Open Policy War Risk Cargo Insurance § 308.517 Open Cargo Policy, Form MA-300. The standard form of War Risk Open Cargo, Form MA-300, may be obtained from MARAD's underwriting agent or MARAD. ...

  10. 46 CFR 308.517 - Open Cargo Policy, Form MA-300.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.517 Open Cargo Policy, Form MA-300. The standard form of War Risk Open Cargo, Form MA-300, may be obtained from the American War Risk...

  11. 46 CFR 308.517 - Open Cargo Policy, Form MA-300.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.517 Open Cargo Policy, Form MA-300. The standard form of War Risk Open Cargo, Form MA-300, may be obtained from the American War Risk...

  12. 46 CFR 308.508 - Issuance of an Open Cargo Policy.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 8 2014-10-01 2014-10-01 false Issuance of an Open Cargo Policy. 308.508 Section 308.508 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Open Policy War Risk Cargo Insurance § 308.508 Issuance of an Open Cargo...

  13. 46 CFR 308.517 - Open Cargo Policy, Form MA-300.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.517 Open Cargo Policy, Form MA-300. The standard form of War Risk Open Cargo, Form MA-300, may be obtained from the American War Risk...

  14. 46 CFR 308.517 - Open Cargo Policy, Form MA-300.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.517 Open Cargo Policy, Form MA-300. The standard form of War Risk Open Cargo, Form MA-300, may be obtained from the American War Risk...

  15. Cargo/Logistics Airlift System Study (CLASS), Volume 1

    NASA Technical Reports Server (NTRS)

    Norman, J. M.; Henderson, R. D.; Macey, F. C.; Tuttle, R. P.

    1978-01-01

    Current and advanced air cargo systems are evaluated using industrial and consumer statistics. Market and commodity characteristics that influence the use of the air mode are discussed along with a comparison of air and surface mode on typical routes. Results of on-site surveys of cargo processing facilities at airports are presented, and institutional controls and influences on air cargo operations are considered.

  16. Revenue management of air cargo service in theory and practice

    NASA Astrophysics Data System (ADS)

    Budiarto, S.; Putro, H. P.; Pradono, P.; Yudoko, G.

    2018-05-01

    This study examines the air cargo service by comparing existing theories from previous research with the conditions on the ground. The object of the study is focused on the freight forwarder and the airport management. This study reviews the models and results of previous research that will be summarized and used to identify any issues related to the characteristics of air cargo operational services, as well as observing and monitoring literature with airlines, shipping companies, and airport management to explore and see the gap between prior research and implementation of its process in the air cargo service. The first phase in this study is to provide an overview of the air cargo industry. The second phase analyzes the characteristic differences between air cargo services and air passenger operating services. And the third phase is a literary bibliography study of air cargo operations, where the focus is on the studies using quantitative models from the perspective of the object of the study, which is the optimization of revenue management on air cargo services. From the results of the study, which is based on the gap between theory and practice, new research opportunities which are related to management of air cargo service revenue in the form of model development are found by adding booking timelines aspects of cargo that can affect the revenue of cargo airline companies and airports.

  17. 46 CFR 153.436 - Heat transfer fluids: compatibility with cargo.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Heat transfer fluids: compatibility with cargo. 153.436... Equipment Cargo Temperature Control Systems § 153.436 Heat transfer fluids: compatibility with cargo. A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil...

  18. 46 CFR 153.436 - Heat transfer fluids: compatibility with cargo.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Heat transfer fluids: compatibility with cargo. 153.436... Equipment Cargo Temperature Control Systems § 153.436 Heat transfer fluids: compatibility with cargo. A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil...

  19. 46 CFR 153.436 - Heat transfer fluids: compatibility with cargo.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 5 2012-10-01 2012-10-01 false Heat transfer fluids: compatibility with cargo. 153.436... Equipment Cargo Temperature Control Systems § 153.436 Heat transfer fluids: compatibility with cargo. A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil...

  20. 46 CFR 153.436 - Heat transfer fluids: compatibility with cargo.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 5 2014-10-01 2014-10-01 false Heat transfer fluids: compatibility with cargo. 153.436... Equipment Cargo Temperature Control Systems § 153.436 Heat transfer fluids: compatibility with cargo. A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil...

  1. 46 CFR 153.436 - Heat transfer fluids: compatibility with cargo.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 5 2013-10-01 2013-10-01 false Heat transfer fluids: compatibility with cargo. 153.436... Equipment Cargo Temperature Control Systems § 153.436 Heat transfer fluids: compatibility with cargo. A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil...

  2. 19 CFR 122.117 - Requirements for transit air cargo transport.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Requirements for transit air cargo transport. 122... Requirements for transit air cargo transport. (a) Transportation—(1) Port to port. Transit air cargo may be... cargo, a receipt shall be given. The receipt shall be made by the airline responsible for transport or...

  3. 19 CFR 122.117 - Requirements for transit air cargo transport.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 1 2011-04-01 2011-04-01 false Requirements for transit air cargo transport. 122... Requirements for transit air cargo transport. (a) Transportation—(1) Port to port. Transit air cargo may be... cargo, a receipt shall be given. The receipt shall be made by the airline responsible for transport or...

  4. Targeted intracellular delivery of proteins with spatial and temporal control.

    PubMed

    Morales, Demosthenes P; Braun, Gary B; Pallaoro, Alessia; Chen, Renwei; Huang, Xiao; Zasadzinski, Joseph A; Reich, Norbert O

    2015-02-02

    While a host of methods exist to deliver genetic materials or small molecules to cells, very few are available for protein delivery to the cytosol. We describe a modular, light-activated nanocarrier that transports proteins into cells by receptor-mediated endocytosis and delivers the cargo to the cytosol by light triggered endosomal escape. The platform is based on hollow gold nanoshells (HGN) with polyhistidine tagged proteins attached through an avidity-enhanced, nickel chelation linking layer; here, we used green fluorescent protein (GFP) as a model deliverable cargo. Endosomal uptake of the GFP loaded nanocarrier was mediated by a C-end Rule (CendR) internalizing peptide fused to the GFP. Focused femtosecond pulsed-laser excitation triggered protein release from the nanocarrier and endosome disruption, and the released protein was capable of targeting the nucleoli, a model intracellular organelle. We further demonstrate the generality of the approach by loading and releasing Sox2 and p53. This method for targeting of individual cells, with resolution similar to microinjection, provides spatial and temporal control over protein delivery.

  5. 49 CFR 1548.21 - Screening of cargo.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY INDIRECT AIR CARRIER SECURITY § 1548.21 Screening of cargo. An IAC may only screen cargo for transport on a passenger aircraft under §§ 1544.205 and 1546.205...

  6. 46 CFR 172.087 - Cargo loading assumptions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... this subpart must be done for cargo weights and densities up to and including the maximum that is to be... condition of loading and operation, each cargo tank must be assumed to have its maximum free surface. ...

  7. 46 CFR 172.087 - Cargo loading assumptions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... this subpart must be done for cargo weights and densities up to and including the maximum that is to be... condition of loading and operation, each cargo tank must be assumed to have its maximum free surface. ...

  8. 46 CFR 172.087 - Cargo loading assumptions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... this subpart must be done for cargo weights and densities up to and including the maximum that is to be... condition of loading and operation, each cargo tank must be assumed to have its maximum free surface. ...

  9. 46 CFR 172.087 - Cargo loading assumptions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... this subpart must be done for cargo weights and densities up to and including the maximum that is to be... condition of loading and operation, each cargo tank must be assumed to have its maximum free surface. ...

  10. 46 CFR 172.087 - Cargo loading assumptions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... this subpart must be done for cargo weights and densities up to and including the maximum that is to be... condition of loading and operation, each cargo tank must be assumed to have its maximum free surface. ...

  11. Systemic delivery of estradiol, but not testosterone or progesterone, alters very low density lipoprotein-triglyceride kinetics in postmenopausal women.

    PubMed

    Smith, Gordon I; Reeds, Dominic N; Okunade, Adewole L; Patterson, Bruce W; Mittendorfer, Bettina

    2014-07-01

    Sexual dimorphism in plasma triglyceride (TG) metabolism is well established but it is unclear to what extent it is driven by differences in the sex hormone milieu. RESULTS from previous studies evaluating the effects of sex steroids on plasma TG homeostasis are inconclusive because they relied on orally administered synthetic hormone preparations or evaluated only plasma lipid concentrations but not kinetics. The purpose of this study was to evaluate the effects of systemically delivered 17β-estradiol, progesterone, and T on very low density lipoprotein-triglyceride (VLDL-TG) concentration and kinetics in postmenopausal women. VLDL-TG concentration and kinetics were evaluated by using stable isotope-labeled tracer techniques in four groups of postmenopausal women (n = 27 total) who were studied before and after treatment with either 17β-estradiol (0.1 mg/d via continuous delivery skin patch), progesterone (100 mg/d via vaginal insert) and T (12.5 mg/d via skin gel), or no intervention (control group). VLDL-TG concentration and kinetics were unchanged in the control group and not altered by T and progesterone administration. Estradiol treatment, in contrast, reduced VLDL-TG concentration by approximately 30% due to accelerated VLDL-TG plasma clearance (25.1 ± 2.5 vs. 17.4 ± 2.7 mL/min; P < .01). Estradiol, but not progesterone or T, is a major regulator of VLDL-TG metabolism.

  12. Protein and siRNA delivery by transportan and transportan 10 into colorectal cancer cell lines.

    PubMed

    Wierzbicki, Piotr M; Kogut-Wierzbicka, Marzena; Ruczynski, Jaroslaw; Siedlecka-Kroplewska, Kamila; Kaszubowska, Lucyna; Rybarczyk, Agnieszka; Alenowicz, Magdalena; Rekowski, Piotr; Kmiec, Zbigniew

    2014-01-01

    Cell penetrating peptides (CPPs) have the ability to translocate through cell membranes with high efficiency and therefore can introduce biological agents with pharmaceutical properties into the cell. Transportan (TP) and its shorter analog transportan 10 (TP10) are among the best studied CPPs, however, their effects on viability of and cargo introduction into colorectal cancer (CRC) cells have yet not been investigated. The aim of our study was to evaluate the cytotoxic effects of TP and TP10 on representative CRC lines and the efficiency of protein (streptavidin) and siRNA cargo delivery by TP-biotinylated derivatives (TP-biot). HT29 (early stage CRC model) and HCT116 (metastatic CRC model) cell lines were incubated with TP, TP10, TP-biot1, TP-biot13 and TP10-biot1. The effects of studied CPPs on cell viability and cell cycle were assessed by MTT and annexin V assays. The uptake of streptavidin-FITC complex into cells was determined by flow cytometry and fluorescence microscopy, with the inhibition of cellular vesicle trafficking by brefeldin A. The efficiency of siRNA for SASH1 gene delivery was measured by quantitative PCR (qPCR). Since up to 10 µM concentrations of each CPP showed no significant cytotoxic effect, the concentrations of 0.5-5 µM were used for further analyses. Within this concentration range none of the studied CPPs affected cell viability and cell cycle. The efficient and endocytosis-independent introduction of streptavidin-FITC complex into cells was observed for TP10-biot1 and TP-biot1 with the cytoplasmic location of the fluorescent cargo; decreased SASH1 mRNA level was noticed with the use of siRNA and analyzed CPPs. We conclude that TP, TP10 and their biotinylated derivatives can be used as efficient delivery vehicles of small and large cargoes into CRC cells.

  13. Indirect Estimation of Radioactivity in Containerized Cargo

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Jarman, Kenneth D.; Scherrer, Chad; Smith, Eric L.

    Detecting illicit nuclear and radiological material in containerized cargo challenges the state of the art in detection systems. Current systems are being evaluated and new systems envisioned to address the need for the high probability of detection and extremely low false alarm rates necessary to thwart potential threats and extremely low nuisance and false alarm rates while maintaining necessary to maintain the flow of commerce impacted by the enormous volume of commodities imported in shipping containers. Maintaining flow of commerce also means that primary inspection must be rapid, requiring relatively indirect measurements of cargo from outside the containers. With increasingmore » information content in such indirect measurements, it is natural to ask how the information might be combined to improved detection. Toward this end, we present an approach to estimating isotopic activity of naturally occurring radioactive material in cargo grouped by commodity type, combining container manifest data with radiography and gamma spectroscopy aligned to location along the container. The heart of this approach is our statistical model of gamma counts within peak regions of interest, which captures the effects of background suppression, counting noise, convolution of neighboring cargo contributions, and down-scattered photons to provide physically constrained estimates of counts due to decay of specific radioisotopes in cargo alone. Coupled to that model, we use a mechanistic model of self-attenuated radiation flux to estimate the isotopic activity within cargo, segmented by location within each container, that produces those counts. We demonstrate our approach by applying it to a set of measurements taken at the Port of Seattle in 2006. This approach to synthesizing disparate available data streams and extraction of cargo characteristics holds the potential to improve primary inspection using current detection capabilities and to enable simulation-based evaluation of

  14. 46 CFR 30.10-6 - Cargo handling room-TB/ALL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Cargo handling room-TB/ALL. 30.10-6 Section 30.10-6 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-6 Cargo handling room—TB/ALL. The term cargo handling room means any enclosed space where cargo is pumped...

  15. 46 CFR 30.10-6 - Cargo handling room-TB/ALL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Cargo handling room-TB/ALL. 30.10-6 Section 30.10-6 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-6 Cargo handling room—TB/ALL. The term cargo handling room means any enclosed space where cargo is pumped...

  16. 46 CFR 30.10-6 - Cargo handling room-TB/ALL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Cargo handling room-TB/ALL. 30.10-6 Section 30.10-6 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-6 Cargo handling room—TB/ALL. The term cargo handling room means any enclosed space where cargo is pumped...

  17. 46 CFR 30.10-6 - Cargo handling room-TB/ALL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Cargo handling room-TB/ALL. 30.10-6 Section 30.10-6 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-6 Cargo handling room—TB/ALL. The term cargo handling room means any enclosed space where cargo is pumped...

  18. 46 CFR 30.10-6 - Cargo handling room-TB/ALL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Cargo handling room-TB/ALL. 30.10-6 Section 30.10-6 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-6 Cargo handling room—TB/ALL. The term cargo handling room means any enclosed space where cargo is pumped...

  19. Intracarotid Delivery of Drugs: The Potential and the Pitfalls

    PubMed Central

    Joshi, Shailendra; Meyers, Phillip M.; Ornstein, Eugene

    2014-01-01

    The major efforts to selectively deliver drugs to the brain in the last decade have relied on smart molecular techniques to penetrate the blood brain barrier while intraarterial drug delivery has drawn relatively little attention. In the last decade there have been rapid advances in endovascular techniques. Modern endovascular procedures can permit highly targeted drug delivery by intracarotid route. Intracarotid drug delivery can be the primary route of drug delivery or it could be used to facilitate the delivery of smart-neuropharmaceuticals. There have been few attempts to systematically understand the kinetics of intracarotid drugs. Anecdotal data suggests that intracarotid drug delivery is effective in the treatment of cerebral vasospasm, thromboembolic strokes, and neoplasms. Neuroanesthesiologists are frequently involved in the care of such high-risk patients. Therefore, it is necessary to understand the applications of intracarotid drug delivery and the unusual kinetics of intracarotid drugs. PMID:18719453

  20. Selenium nanoparticles: potential in cancer gene and drug delivery.

    PubMed

    Maiyo, Fiona; Singh, Moganavelli

    2017-05-01

    In recent decades, colloidal selenium nanoparticles have emerged as exceptional selenium species with reported chemopreventative and therapeutic properties. This has sparked widespread interest in their use as a carrier of therapeutic agents with results displaying synergistic effects of selenium with its therapeutic cargo and improved anticancer activity. Functionalization remains a critical step in selenium nanoparticles' development for application in gene or drug delivery. In this review, we highlight recent developments in the synthesis and functionalization strategies of selenium nanoparticles used in cancer drug and gene delivery systems. We also provide an update of recent preclinical studies utilizing selenium nanoparticles in cancer therapeutics.

  1. 33 CFR 104.275 - Security measures for handling cargo.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... documentation, or that cargo markings or container numbers match the information provided with shipping..., container, or other cargo transport units are loaded; (3) Intensifying screening of vehicles to be loaded on... cargo. 104.275 Section 104.275 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  2. 33 CFR 104.275 - Security measures for handling cargo.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... documentation, or that cargo markings or container numbers match the information provided with shipping..., container, or other cargo transport units are loaded; (3) Intensifying screening of vehicles to be loaded on... cargo. 104.275 Section 104.275 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  3. 33 CFR 104.275 - Security measures for handling cargo.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... documentation, or that cargo markings or container numbers match the information provided with shipping..., container, or other cargo transport units are loaded; (3) Intensifying screening of vehicles to be loaded on... cargo. 104.275 Section 104.275 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  4. 33 CFR 104.275 - Security measures for handling cargo.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... documentation, or that cargo markings or container numbers match the information provided with shipping..., container, or other cargo transport units are loaded; (3) Intensifying screening of vehicles to be loaded on... cargo. 104.275 Section 104.275 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  5. 33 CFR 104.275 - Security measures for handling cargo.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... documentation, or that cargo markings or container numbers match the information provided with shipping..., container, or other cargo transport units are loaded; (3) Intensifying screening of vehicles to be loaded on... cargo. 104.275 Section 104.275 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  6. 46 CFR 64.89 - Cargo pump unit.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... with the product to be pumped. (d) A diesel engine that is used to drive a cargo pump must have a spark...) The cargo pump power unit must be— (1) Diesel; (2) Hydraulic; (3) Pneumatic; or (4) Electric. (c) The...

  7. 46 CFR 64.89 - Cargo pump unit.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... with the product to be pumped. (d) A diesel engine that is used to drive a cargo pump must have a spark...) The cargo pump power unit must be— (1) Diesel; (2) Hydraulic; (3) Pneumatic; or (4) Electric. (c) The...

  8. 46 CFR 64.89 - Cargo pump unit.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... with the product to be pumped. (d) A diesel engine that is used to drive a cargo pump must have a spark...) The cargo pump power unit must be— (1) Diesel; (2) Hydraulic; (3) Pneumatic; or (4) Electric. (c) The...

  9. 46 CFR 64.89 - Cargo pump unit.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... with the product to be pumped. (d) A diesel engine that is used to drive a cargo pump must have a spark...) The cargo pump power unit must be— (1) Diesel; (2) Hydraulic; (3) Pneumatic; or (4) Electric. (c) The...

  10. 33 CFR 401.71 - Signals-explosive or hazardous cargo vessels.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Dangerous Cargo § 401.71 Signals—explosive or hazardous cargo vessels. An explosive or hazardous cargo vessel shall display at the...

  11. 46 CFR 30.10-5a - Cargo area-TB/ALL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Cargo area-TB/ALL. 30.10-5a Section 30.10-5a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-5a Cargo area—TB/ALL. The term cargo area means that part of a vessel that includes the cargo tanks and...

  12. 46 CFR 30.10-5a - Cargo area-TB/ALL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Cargo area-TB/ALL. 30.10-5a Section 30.10-5a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-5a Cargo area—TB/ALL. The term cargo area means that part of a vessel that includes the cargo tanks and...

  13. 46 CFR 30.10-5a - Cargo area-TB/ALL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Cargo area-TB/ALL. 30.10-5a Section 30.10-5a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-5a Cargo area—TB/ALL. The term cargo area means that part of a vessel that includes the cargo tanks and...

  14. 46 CFR 30.10-5a - Cargo area-TB/ALL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Cargo area-TB/ALL. 30.10-5a Section 30.10-5a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-5a Cargo area—TB/ALL. The term cargo area means that part of a vessel that includes the cargo tanks and...

  15. 46 CFR 30.10-5a - Cargo area-TB/ALL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Cargo area-TB/ALL. 30.10-5a Section 30.10-5a Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK VESSELS GENERAL PROVISIONS Definitions § 30.10-5a Cargo area—TB/ALL. The term cargo area means that part of a vessel that includes the cargo tanks and...

  16. 46 CFR 308.511 - Cancellation of Open Cargo Policy.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 8 2010-10-01 2010-10-01 false Cancellation of Open Cargo Policy. 308.511 Section 308.511 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.511 Cancellation of Open...

  17. 46 CFR 308.511 - Cancellation of Open Cargo Policy.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 8 2012-10-01 2012-10-01 false Cancellation of Open Cargo Policy. 308.511 Section 308.511 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.511 Cancellation of Open...

  18. 46 CFR 308.511 - Cancellation of Open Cargo Policy.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 8 2013-10-01 2013-10-01 false Cancellation of Open Cargo Policy. 308.511 Section 308.511 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.511 Cancellation of Open...

  19. 46 CFR 308.511 - Cancellation of Open Cargo Policy.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 8 2011-10-01 2011-10-01 false Cancellation of Open Cargo Policy. 308.511 Section 308.511 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY OPERATIONS WAR RISK INSURANCE War Risk Cargo Insurance Ii-Open Policy War Risk Cargo Insurance § 308.511 Cancellation of Open...

  20. Cargo Transfer operations

    NASA Image and Video Library

    2014-08-21

    ISS040-E-103985 (21 Aug. 2014) --- NASA astronaut Steve Swanson, Expedition 40 commander, is pictured during cargo transfer operations in the "Georges Lemaitre" Automated Transfer Vehicle-5 (ATV-5) currently docked with the International Space Station.

  1. 46 CFR 91.25-37 - Tanks containing dangerous cargoes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Tanks containing dangerous cargoes. 91.25-37 Section 91... VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 91.25-37 Tanks containing dangerous cargoes. (a) For inspection and tests of tanks containing certain dangerous cargoes in bulk, see part 98...

  2. 46 CFR 91.25-37 - Tanks containing dangerous cargoes.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Tanks containing dangerous cargoes. 91.25-37 Section 91... VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 91.25-37 Tanks containing dangerous cargoes. (a) For inspection and tests of tanks containing certain dangerous cargoes in bulk, see part 98...

  3. 46 CFR 91.25-37 - Tanks containing dangerous cargoes.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Tanks containing dangerous cargoes. 91.25-37 Section 91... VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 91.25-37 Tanks containing dangerous cargoes. (a) For inspection and tests of tanks containing certain dangerous cargoes in bulk, see part 98...

  4. 46 CFR 91.25-37 - Tanks containing dangerous cargoes.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Tanks containing dangerous cargoes. 91.25-37 Section 91... VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 91.25-37 Tanks containing dangerous cargoes. (a) For inspection and tests of tanks containing certain dangerous cargoes in bulk, see part 98...

  5. 46 CFR 91.25-37 - Tanks containing dangerous cargoes.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Tanks containing dangerous cargoes. 91.25-37 Section 91... VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 91.25-37 Tanks containing dangerous cargoes. (a) For inspection and tests of tanks containing certain dangerous cargoes in bulk, see part 98...

  6. 46 CFR 154.408 - Cargo tank external pressure load.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... minimum internal pressure (maximum vacuum), and the maximum external pressure to which any portion of the... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo tank external pressure load. 154.408 Section 154... Equipment Cargo Containment Systems § 154.408 Cargo tank external pressure load. For the calculation...

  7. 46 CFR 154.1842 - Cargo system: Controls and alarms.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 5 2011-10-01 2011-10-01 false Cargo system: Controls and alarms. 154.1842 Section 154... SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1842 Cargo system: Controls and alarms. The master shall ensure that the cargo emergency shut-down system and the...

  8. 46 CFR 154.1842 - Cargo system: Controls and alarms.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Cargo system: Controls and alarms. 154.1842 Section 154... SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Operations § 154.1842 Cargo system: Controls and alarms. The master shall ensure that the cargo emergency shut-down system and the...

  9. 33 CFR 126.17 - Permits required for handling designated dangerous cargo.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... designated dangerous cargo. 126.17 Section 126.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.17 Permits required for handling designated dangerous cargo. Designated dangerous cargo may be...

  10. 33 CFR 126.17 - Permits required for handling designated dangerous cargo.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... designated dangerous cargo. 126.17 Section 126.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.17 Permits required for handling designated dangerous cargo. Designated dangerous cargo may be...

  11. 33 CFR 126.17 - Permits required for handling designated dangerous cargo.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... designated dangerous cargo. 126.17 Section 126.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.17 Permits required for handling designated dangerous cargo. Designated dangerous cargo may be...

  12. 33 CFR 126.17 - Permits required for handling designated dangerous cargo.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... designated dangerous cargo. 126.17 Section 126.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.17 Permits required for handling designated dangerous cargo. Designated dangerous cargo may be...

  13. 33 CFR 126.17 - Permits required for handling designated dangerous cargo.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... designated dangerous cargo. 126.17 Section 126.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.17 Permits required for handling designated dangerous cargo. Designated dangerous cargo may be...

  14. 46 CFR 154.705 - Cargo boil-off as fuel: General.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.705 Cargo boil-off as fuel: General. (a) Each cargo boil-off fuel...

  15. 46 CFR 154.705 - Cargo boil-off as fuel: General.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.705 Cargo boil-off as fuel: General. (a) Each cargo boil-off fuel...

  16. 46 CFR 154.705 - Cargo boil-off as fuel: General.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.705 Cargo boil-off as fuel: General. (a) Each cargo boil-off fuel...

  17. 46 CFR 154.705 - Cargo boil-off as fuel: General.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.705 Cargo boil-off as fuel: General. (a) Each cargo boil-off fuel...

  18. 46 CFR 154.705 - Cargo boil-off as fuel: General.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES Design, Construction and Equipment Cargo Pressure and Temperature Control § 154.705 Cargo boil-off as fuel: General. (a) Each cargo boil-off fuel...

  19. The promise of air cargo-system aspects and vehicle design

    NASA Technical Reports Server (NTRS)

    Whitehead, A. H., Jr.

    1977-01-01

    A review of the current operation of the air cargo system is presented and the prospects for the future are discussed. Attention is given to air cargo demand forecasts, the economics of air cargo transport, the development of an integrated air cargo system, and the evolution of airfreighter design. Particular emphasis is placed on the span-distributed load concept, examining the Boeing, Douglas, and Lockheed spanloaders.

  20. 46 CFR 151.45-6 - Maximum amount of cargo.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Operations § 151.45-6 Maximum amount of cargo. (a) Tanks carrying liquids or liquefied gases at ambient temperatures regulated by this subchapter shall be limited in the amount of cargo loaded to that which will avoid the tank being liquid full at 105 °F if...