Permeability

This research focuses on Fibre Cement Felts (FCF), which is a non-woven textile substrate acting as a conveyor belt for the manufacturing of Fibre Cement Sheets (FCS). Fibre Cement Felts are a valued component required in the manufacturing process of Fibre Cement Sheets, used in construction for today’s building industry. Identifying the key factors that most influence FCF will assist in understanding of the relationship between fibre diameters, carded web, and mechanical bonding.

137p runthenight07 01-03-2023 7 3   Download

"Master's thesis of Science: Intestinal permeability and functional properties of duodenal enteric neurons in a mouse model of autism" is structured as follows: Chapter 1: Introduction; Chapter 2: Measuring intestinal permeability in the Neuroligin-3R451C mouse model of autism; Chapter 3: Optimisation of the patch-clamp recording technique in the enteric nervous system to examine action potential characteristics in mouse duodenal myenteric neurons.

147p runthenight04 02-02-2023 11 4   Download

Determine the coefficient of water permeability, waterproofing marks, chloride ion diffusion coefficients of some types of concrete commonly used in bridge construction subjected to pre-compressive and direct-compression loads. Develop a predictive model for life expectancy using reinforced concrete bridges taking into consideration the effect of the load according to the criteria of initial corrosion of reinforcement in concrete. Application of life expectancy for the structure of reinforced concrete bridges.

27p kequaidan7 01-09-2020 30 2   Download

This work represents the results of dual production technologies introduction at Urayneftegaz oil fields which allowed, under the conditions of low permeable reservoirs.

6p lucastanguyen 01-06-2020 8 2   Download

In this study, an experimental work is presented to determine the effects of fourteen different knit structures of 80% Lambswool-20% Polyamide knitted outerwear fabrics, on the dimensional properties; pilling resistance, abrasion resistance, bursting strength, air permeability and bending rigidity.

6p thuplato 17-05-2016 66 6   Download

Đề tài: Nghiên cứu tính thấm nước của bê tông rỗng the permeability of enhanced porosity concrete đi sâu về nghiên cứu mối quan hệ gíữa độ rỗng, kích thước hạt cốt liệu dùng để chế tạo bê tông rỗng, kích thước lỗ rỗng tới đặc tính thấm của bê tông rỗng. Với các bạn chuyên ngành Xây dựng thì đây là tài liệu hữu ích.

5p pjflexri 10-03-2015 122 16   Download

Virtual Pervious Concrete: Microstructure, Percolation, and Permeability presents various virtual pervious concrete microstructural percolation characteristics and computed transport properties to those of real world pervious concretes. Of the various virtual pervious concretes explored in th is study, one based on a correlation filter three dimensional reconstruction algorithm clearly provides a void structure closest to that achieved in real pervious concrete.

5p pjflexri 10-03-2015 38 6   Download

2-Aminoethoxydiphenyl Borate (2-APB) has been extensively used recently as a membrane permeable modulator of inositol-1,4,5-trisphosphate-sensitive Ca2+ channels and store-operated Ca2+ entry. Here, we report that 2-APB is also an inhibitor of sarco/endoplasmic reticulum Ca2+ATPase (SERCA) Ca2+ pumps, and additionally increases ion leakage across the phospholipid bilayer. Therefore, we advise caution in the interpretation of results when used in Ca2+ signalling experiments.

10p system191 01-06-2013 40 4   Download

Department of Medical Biochemistry and Biology, University of Bari, Italy; 2Department of Zoology, Laboratory of Histology and Comparative Anatomy, University of Bari, Italy; 3Center for the Study of Mitochondria and Energy Metabolism (CNR) Bari, Italy Mitochondrial bioenergetic impairment has been found in the organelles isolated from rat liver during the prereplicative phase of liver regeneration.

9p system191 01-06-2013 35 4   Download

Hybridomas are cells that have been engineered to produce a desired antibody in large amounts. To produce monoclonal antibodies, Bcells are removed from the spleen of an animal that has been challenged with the relevant antigen. These B-cells are then fused with myeloma tumor cells that can grow indefinitely in culture (myeloma is a B-cell cancer). This fusion is performed by making the cell membranes more permeable. The fused hybrid cells (called hybridomas), being cancer cells, will multiply rapidly and indefinitely and will produce large amounts of the desired antibodies.

7p zingzing09 24-04-2013 70 4   Download

When studiedin vitro, mitochondrial permeability transition (MPT) is associated with an increase in mitochondrial per-meability to solutes up to 1500 Da in mass and a loss of electrical potential difference across the inner mitochondrial membrane (Dwmit). The MPT has been implicated as being important in cellular calcium homeostasis, autophagy and cell death via necrosis and apoptosis.

8p research12 23-04-2013 47 3   Download

Wehave examined the effectsof three ring-sizeanalogsof the cyclicb-sheet antimicrobial peptidegramicidinS (GS) on the thermotropic phase behavior and permeability of phos-pholipid model membranes and on the growth of the cell wall-less Gram-positive bacteriaAcholeplasma laidlawiiB. These three analogs have ring sizes of 10 (GS10), 12 (GS12) or 14 (GS14) amino acids, respectively.

10p tumor12 22-04-2013 32 2   Download

To examine whether valinomycin induces a mitochondrial permeability transition (PT), we investigated its effects on mitochondrial functions under various conditions. The acceleration of mitochondrial respiration and swelling, induced by valinomycin, were found to be insensitive to inhibitors of the ordinary PT, indicating that valinomycin does not induce the ordinary PT. Results of experiments usingmitochondria isolated fromtransgenicmice expressing human bcl-2 also supported this conclusion.

7p tumor12 22-04-2013 34 3   Download

Previous results showed that mRNA encoding a putative aquaporin (AQP) (GenBankaccession number AF218314) is present in the tracheolar cells associated with female Aedes aegyptiMalpighian tubules. In this study, immuno-histochemistry detected the protein,AeaAQP, also in tra-cheolar cells, suggesting its involvement in water movement in the respiratory system. When expressed in Xenopus oocytes,AeaAQP increased the osmotic water permeability from15·10 )6 to 150 ·10 )6 mÆs )1 , whichwas inhibited by mercury ions. No permeability to glycerol or other solute was observed....

8p tumor12 20-04-2013 48 3   Download

Fromin vivo models of stroke it is known that ischemia⁄reperfusion indu-ces oxidative stress that is accompanied by deterioration of brain mito-chondria. Previously, we reported that the increase in Ca 2+ induces functional breakdown and morphological disintegration in brain mitochon-dria subjected to hypoxia⁄reoxygenation (H⁄R). Protection by ADP indica-ted the involvement of the mitochondrial permeability transition pore in the mechanism of membrane permeabilization.

9p fptmusic 11-04-2013 25 1   Download

The high water permeability of certain biological membranes is due to the presence of aquaporin water channel proteins. AQP1 was discovered in human red cells. AQP1 has been thoroughly characterized biophysically, and the atomic structure of AQP1 has been elucidated. Ten homologs have been identified in humans. These are selectively permeated by water (aquaporins) or water plus glycerol (aquaglyceroporins). The sites of expres-sion predict the clinical phenotypes in humans. Individuals lack-ing Colton blood group antigens have mutations in the AQP1 gene. ...

81p fptmusic 11-04-2013 35 4   Download

Injury of liver by ischaemia crucially involves mitochondrial damage. The role of Ca 2+ in mitochondrial damage is still unclear. We investigated the effect of low micromolar Ca 2+ concentrations on respiration, membrane permeability, and antioxidative defence in liver mitochondria exposed to hypoxia⁄reoxygenation. Hypoxia⁄reoxygenation caused decrease in state 3 respiration and in the respiratory control ratio.

9p dell39 27-03-2013 41 3   Download

The mitochondrial permeability transition pore is a high conductance chan-nel whose opening leads to an increase of mitochondrial inner membrane permeability to solutes with molecular masses up to
1500 Da. In this review we trace the rise of the permeability transition pore from the status ofin vitro artifact to that of effector mechanism of cell death.

23p inspiron33 26-03-2013 42 6   Download

The notion that it takes two to tango is certainly true for leukocyte trans-endothelial migration. A growing pallet of leukocyte adhesion-induced signaling events in endothelial cells have been identified, mediating both short-term (i.e. permeability) as well as long-term (i.e. regulation of tran-scription) effects.

8p inspiron33 25-03-2013 34 6   Download

Cyclosporin A induces closure of the mitochondrial permeability transition pore. We aimed to investigate whether this closure results in concomitant increases in mitochondrial membrane potential (DWm) and the produc-tion of reactive oxygen species.

10p galaxyss3 19-03-2013 30 5   Download