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Seismic Shear Strengthening of Reinforced Concrete Short Columns Using Ferrocement with Expanded Metal

Seismic Shear Strengthening of Reinforced Concrete Short Columns Using Ferrocement with Expanded Metal

In the strengthening process, four 25×25 mm steel angles were installed at each corner of columns. The expanded metal sheets were cut into four strips and they were laminated at each side of columns. The vertical edges of each expanded metal strip were welded to the steel angle by the welding electrode. Two 9 mm diameter steel tie rods were employed as adhesive shear keys at an embedded depth of 75 mm and a spacing of 200 mm along the height of columns. The tie rods were round bars with the yield strength of 240 MPa, and they were fixed to the concrete with the non-shrink grouting. The use of steel angle was to reduce the effect of stress concentration at the corners of rectangular columns. The adhesive tie rod shear keys were provided to prevent bond failure of the ferrocement. The ferrocement jacket was 30 mm thickness through the height of columns, except that a gap of 25 mm was provided at the column base to avoid the increase of flexural capacity of ferrocement. The volume fraction (V f ) of reinforcement in the
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Study on the Compression Behaviour of Self Compacting Concrete Columns using Expanded Metal Mesh as Internal Confinement

Study on the Compression Behaviour of Self Compacting Concrete Columns using Expanded Metal Mesh as Internal Confinement

The non-uniform distribution of reinforcement affects many engineering properties such as ductility, crack resistance, durability and in-plane strength. The shortage of confinement offered by ties paves a way for using materials such as Expanded Metal Mesh to confine the concrete core. EMM were used to reduce the reinforcement congestion caused due to the overlapping hoops and bends made by ties. This is formed by mild steel having diamond opening. This is advantageous due to its low cost, easy availability and flexibility during installation. Self-Compacting Concrete is widely used in areas of congested reinforcement. This helps to improve the reliability and uniformity of the concrete. SCC has the ability to flow under its own weight without vibration. EMM can be used as a substitute for conventional reinforcement. The structural behaviour of SCC columns with EMM as internal confinement is little known.
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Flexural Behaviour of Ferrocement Slab Panels Using Expanded Metal Mesh

Flexural Behaviour of Ferrocement Slab Panels Using Expanded Metal Mesh

ABSTRACT : The present study describes the results of testing flat ferrocement panels reinforced with different number of wire mesh layer and variation in panel thickness.[r]

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Shielding effectiveness of original and modified building materials

Shielding effectiveness of original and modified building materials

The major differences of the two ferro concrete DUTs are that the first one is covered by a layer of expanded metal (see Fig. 6), which the second is not. The concrete of the second DUT is compounded with steel fibres. For the unit with flush mounted expanded metal, the shielding effectiveness arises from the reinforcement of the flush (see Fig. 6). As a result of the small mesh size of the expanded metal, the cut-off fre- quency shifts up to smaller wave length. The high shielding effectiveness above 2 GHz is due to the dipoles of incorpo- rated water molecules in the concrete.
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Model Testing Of Reinforced Soil Slope with Flexible Facing

Model Testing Of Reinforced Soil Slope with Flexible Facing

The expanded metal mesh is a sheet of metal that is cut and stretched to form a regular pattern of metal mesh material (usually a diamond shape). It is usually used for fences, as well as metal slats that support stucco/plaster. This material is stronger compared to equivalent wire mesh weight because the material is flat, allowing the metal to remain intact. Another benefit of expanding metal mesh is that the metal is never completely cut and reconnected, allowing the material to maintain its strength.These products are known for their low cost, rust resistance, precise composition, long life, easy maintenance, durability, fine surface, high quality, precise size, wear and corrosion resistance, no do pants, custom sizes, and high special features and so on. These products come from reliable suppliers in the industry and are offered at relatively low prices, taking into account the financial constraints of the customers. The values of stress and strain observed by this material are listed in table 6.
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Patterned Si thin film electrodes for enhancing structural stability

Patterned Si thin film electrodes for enhancing structural stability

A patterned film (electrode) with lozenge-shaped Si tiles could be successfully fabricated by masking with an expanded metal foil during film deposition. Its electrochemical properties and structural stability during the charge- discharge process were examined and compared with those of a continuous (conventional) film electrode. The patterned electrode exhibited a remarkably improved cycleability (75% capacity retention after 120 cycles) and an enhanced structural stability compared to the continuous electrode. The good electrochemical performance of the patterned electrode was attributed to the space between Si tiles that acted as a buffer against the volume change of the Si electrode.
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Expanded HOXA13 polyalanine tracts in a monotreme

Expanded HOXA13 polyalanine tracts in a monotreme

Homopolymeric amino acid sequences are well documented for numerous vertebrate proteins. In humans, these repetitive sequences most frequently involve glutamines, leucines, pro- lines, alanines or glycines (Karlin et al. 2002). The exact mo- lecular function of homopolymeric amino acid runs are not fully understood, yet some may potentially serve as activation or repression domains (Han and Manley 1993). Many human neurodegenerative and developmental disorders have been linked to expanded homopolymeric amino acid tracts. In particular, polyalanine tracts account for 16.9% of all human homopolymeric protein sequences (Karlin et al. 2002) and in- frame polyalanine expansions are known to cause disorders involving at least nine genes: HOXA13, HOXD13, PHOX2B, FOXL2, PABPN1, ARX, RUNX2, ZIC2, and SOX3 (Lavoie et al. 2003; Brown and Brown 2004).
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Annual summary research report in metallurgy for July 1958–June 1959

Annual summary research report in metallurgy for July 1958–June 1959

yttrium metal lanthanum metal ce rium metal neodymium metal praseodymium metal gadolinium metal lute tium metal erbium metal ytterbium metal samarium metal terbium metal dysprosium metal[r]

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Relative Surplus Value and Expanded Reproduction

Relative Surplus Value and Expanded Reproduction

In the early part of this century a debate erupted among Russian and German economists. It was started by Rosa Luxemburg’s Accumulation of Capital, which asked the question: how can capitalism reproduce itself? It was continued by many, including Nikolai Bukharin, whose reply, seven years after her death and widely considered definitive, sums up the modern approach to this question. In essence, he asserted an equilibrium growth condition which the equations would have to satisfy in order for capitalism to exist on the basis of Marx’s equations for simple and for expanded reproduction.
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Commentary on "Expanded Learning Time in Schools"

Commentary on "Expanded Learning Time in Schools"

We offered an extended school day, week, and year—by our calculations, amounting to almost 67 percent more time on task for our students than in traditional-day schools1[r]

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Cryo-electron Microscopy Structures of Expanded Poliovirus with VHHs Sample the Conformational Repertoire of the Expanded State

Cryo-electron Microscopy Structures of Expanded Poliovirus with VHHs Sample the Conformational Repertoire of the Expanded State

In the Pvr-poliovirus complex, we were struck by the fact that one of these two hydrophobic pockets was empty and positioned directly above the GH loop of VP3 (in its coiled native conformation), which was known to change conformation upon virus expansion (14, 15, 19, 20). We therefore hypothesized that some (as-yet-unknown) conformational rearrangement of the VP3 GH loop might permit either Phe184 or Tyr176 (from the VP3 GH loop) to fill the hydrophobic pocket of Pvr. Hypothetically, the resulting trapping of the GH loop would open the quasi-3-fold hole in the capsid (which is normally plugged by the native coiled conformation of the GH loop) and eliminate some of the intermolecular contacts that normally stabilize the unexpanded virus. FIG 7 The GH loop of VP3 changes conformation due to both expansion and VHH binding. (Top) A side view of VP3, in a ribbon representation, is shown in a stereo view, strongly depth cued to emphasize changes that occur adjacent to the quasi-3-fold hole. The outer surface of the virus is up, the inner surface is down, and the quasi-3-fold axis is roughly vertical, to the left. The native-like conformation of VP3 (white), as seen in the Pvr-poliovirus complex at low temperature (PDB accession number 3J8F), is shown superimposed on VP3 from the PVSS7A complex (deep purple) and on residues 162 to 194 from the PVSP17B complex (green). In PVSS7A, observe the three beta strands on the left (deep purple), where the third beta strand (residues 170 to 175) results from the uncoiling of the GH loop. This shifts the main chain rightward by as much as 8 Å, which opens the quasi-3-fold hole completely, which is typical of most expanded picornavirus structures (see the text). In contrast, in PVSP17B, the corresponding residues at the bottom of the GH loop (green) remain in the native conformation (and continue to block the quasi-3-fold hole), but the residues at the top of the loop shift outward to contact the VHH. (Middle) Stereo view showing how
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The Right to Counsel Must Be Protected and Expanded

The Right to Counsel Must Be Protected and Expanded

safeguard the foundational right to counsel and fully fund legal defense for the indigent to ensure that justice is not only for the affluent. Lauren Carasik is a clinical professor of [r]

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We Need Expanded Newborn Screening

We Need Expanded Newborn Screening

There are conditions that do not fit with our tradi- tional newborn screening programs using dried blood spots; this will likely require the expansion of our new- born screening programs[r]

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Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

durability properties of lightweight concrete mixtures with fine expanded glass and expanded clay 131. aggregates using different microfillers.[r]

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The Expanded Universe of Prokaryotic Argonaute Proteins

The Expanded Universe of Prokaryotic Argonaute Proteins

The Expanded Universe of Prokaryotic Argonaute Proteins Sergei Ryazansky,a Andrey Kulbachinskiy,a Alexei A Aravina,b aInstitute of Molecular Genetics, Russian Academy of Sciences, Moscow, Russia bDivi[.]

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The Case for an Expanded Concept of Trained Immunity

The Case for an Expanded Concept of Trained Immunity

An expanded concept of trained immunity for antimicrobial defense. The observation that mucosal EC can be primed for memory responses adds to the training of other cells of innate immunity in opening important perspectives for the control and transmission of infectious disease and vaccination. EC are the prime external or internal body contact with the microbial world, and the possibility that these cells or part of them can memorize the above contacts raises particularly relevant and novel biological issues. EC memory can cooperate or interfere with memories of innate and adaptive immunity in the outcome and persistence of protective immune responses and in the microbiota homeostasis. Candida and candidiasis are a special case in point, since this fungus is a normal commensal of the intestinal and vaginal mucosa, while as an opportunistic agent, it can cause high-prevalence infections of oral and vaginal mucosa. Besides its potential role in favoring new approaches to a much-needed anti-Candida vaccine (40), EC memory could play a role in the commensalism of the normal host by this fungus, some intrinsic capacity EC have to keep it at bay (24) and in the onset and recurrence of disease. Modulations of EC memory could be particularly involved in recurrences of vulvovaginal candidiasis (VVC), a disease characterized by bouts of unresolvable pathogenic inflammation associated with a substantial anergy of the vaginal recruited neutrophils, which usually are the most potent candidacidal effectors (41). Notably, all these events occur in a setting of normal functioning of adaptive immunity. The overall picture of recurrent VVC almost perfectly fits the recognized pattern of other inflammatory diseases and immune tolerance where the roles of EC, inflammasomes, neutrophils, and commensal microorganisms have long been under- scored (42). An outstanding addition now appears to be the EC inflammatory memory. A conclusive hypothesis. Building on the already well-developed TI concept and the recent evidence for EC stem cell memory and speculating about the apparent intrinsic attitude of living cells to acquire some memory from experience, I am here proposing an expansion of the TI concept (expanded trained immunity [ETI]) that considers all cells involved in antimicrobial defense, both of hematopoietic and non- hematopoietic origin, as a unique, interactive, cross talking cellular “organism” sharing memories of previous microbial encounters. ETI is an exciting perspective for novel thinking and improved approaches to the fight against infectious and inflammatory diseases.
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EXPANDED LINKAGE MAP OF VIBRIO CHOLERAE

EXPANDED LINKAGE MAP OF VIBRIO CHOLERAE

donor alleles (related to random separation of mating pairs) and postzygotic exclusion of donor alleles (related to probability of integration of the donor’s genetic [r]

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Point island models for nucleation and growth of supported nanoclusters during surface deposition

Point island models for nucleation and growth of supported nanoclusters during surface deposition

of metal NCs on graphite is often facilitated by sputtering to create surface damage and heterogeneous nucleation centers, but even a small fraction of Cu ions from an e-beam evaporator can create su ffi cient damage that heterogeneous nucleation dominates for Cu deposition on HOPG; 46 (i) deposition of metals on metal-supported graphene, with periodically rumpled morié structure due to lattice mismatch, often results in directed assembly of 3D NCs, 54 and the PIM framework is ideally suited to modeling of this complex process. 48

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Dissolution of Expanded Polystyrene in Cycloalkane Solutions

Dissolution of Expanded Polystyrene in Cycloalkane Solutions

Feasibility of dissolution and utilization of expanded polystyrene in cycloal- kane solutions was investigated in this work. The dissolution process of ex- panded polystyrene in several cycloalkane solutions decalin, cyclohexane and methyl cyclohexane was studied. The effect of dissolution temperature, me- chanical agitation, ultrasonic wave and stirring rate was studied under opti- mized conditions. Mass transfer coefficients were fitted. The results showed that the dissolution rate of expanded polystyrene in different cycloalkane so- lutions was ranked as decalin > methyl cyclohexane > cyclohexane; higher dissolution temperature and faster stirring rate could speed up the dissolution of expanded polystyrene; the effect of mechanical agitation was superior to ultrasonic condition; the solubility of top face was better than side face and under face.
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Gas Evolution Qualitative Analyses From Modified Cellulose Mixtures During Thermal Degradation in Air and Argon

Gas Evolution Qualitative Analyses From Modified Cellulose Mixtures During Thermal Degradation in Air and Argon

lite does not emit considerable amounts of CO 2 throughout the temperature range of the experi- ment. It is clearly visible in Fig. 2 that pure perlite examined in argon is more prone to emit carbon dioxide than in air, which may indicate that gas can be absorbed by expanded perlite. The hygro- scopic properties of expanded perlite [18, 20] can also indicate that it is capable of absorbing gases.

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