Specification for Bearing, Roller, Needle: Drawn Outer Ring, Full Complement, Without Inner Ring, Open and Closed End, Standard Type

10.1520/f2162 ◽  
2008 ◽  
Author(s):  
Author(s):  
Linda M. Stannard ◽  
Margaret Lennon

Burnupena cincta and Fusus verruculatus are two whelks which inhabit the intertidal zones of the Cape Peninsula shore. Their respiratory pigments, or haemocyanins, are morphologically similar in structure (Figs. 1 and 2) and appear in the electron microscope as short cylindrical rods about 34 nm in diameter and 36 nm high. Viewed side-on the molecules show regular banding suggesting a structure composed of six equidistant rings of sub-units. Occasionally the particles have the appearance of possessing a central “belt” in the position of the 3rd and 4th rows of sub-units. End-on views of the haemocyanin molecules show a circular contour with a dense outer ring and a less dense inner ring in which 10 definite sub-units may frequently be distinguished. A number of molecules display an extra central inner component which appears either as a diffuse plug or as a discrete ring-shaped core ± 8 nm in diameter.


2005 ◽  
Vol 41 ◽  
pp. 15-30 ◽  
Author(s):  
Helen C. Ardley ◽  
Philip A. Robinson

The selectivity of the ubiquitin–26 S proteasome system (UPS) for a particular substrate protein relies on the interaction between a ubiquitin-conjugating enzyme (E2, of which a cell contains relatively few) and a ubiquitin–protein ligase (E3, of which there are possibly hundreds). Post-translational modifications of the protein substrate, such as phosphorylation or hydroxylation, are often required prior to its selection. In this way, the precise spatio-temporal targeting and degradation of a given substrate can be achieved. The E3s are a large, diverse group of proteins, characterized by one of several defining motifs. These include a HECT (homologous to E6-associated protein C-terminus), RING (really interesting new gene) or U-box (a modified RING motif without the full complement of Zn2+-binding ligands) domain. Whereas HECT E3s have a direct role in catalysis during ubiquitination, RING and U-box E3s facilitate protein ubiquitination. These latter two E3 types act as adaptor-like molecules. They bring an E2 and a substrate into sufficiently close proximity to promote the substrate's ubiquitination. Although many RING-type E3s, such as MDM2 (murine double minute clone 2 oncoprotein) and c-Cbl, can apparently act alone, others are found as components of much larger multi-protein complexes, such as the anaphase-promoting complex. Taken together, these multifaceted properties and interactions enable E3s to provide a powerful, and specific, mechanism for protein clearance within all cells of eukaryotic organisms. The importance of E3s is highlighted by the number of normal cellular processes they regulate, and the number of diseases associated with their loss of function or inappropriate targeting.


2018 ◽  
Vol 1 ◽  
pp. 350
Author(s):  
Taufik Raharjo ◽  
Ambang Aries Yudanto ◽  
I Gede Agus Ariutama

As the Indonesian government has been committed, that the national development should be puting more focus from the outer-ring or rural areas. One of the instrument to boost the rural development is Village Fund. This decentralization transfer purposively targets to improve the village society’s welfare and alleviate social gap existed among societies. Village-owned enterprise (Badan Usaha Milik Desa or BUMDes) is provided as one of the strategic mechanism to create the welfare by proactively engage the community itsefl. In fact, BUMDes may incorporate Village Fund as capital alternative to support their establishment. This paper highlights the crucial factors in order to establish a village-owned enterprise (BUMDes) in case of Cibogo Village, Cisauk Sub-regency, Tangerang Regency. The study deploys a qualitative approach. To collect the data, we are scouting, interviewing and establishing Focused-Group Discussion that involving the possible parties which may contributes in creating BUMDes. The result has not yet concluded as the process of the research still going on. We predicts that the communities engagement, empowerment and also government support should be taken into account in the early process of establishing BUMDes. Eventually, proactive society’s control and participatory would be decent factors to support the operations of BUMDes itself.


Alloy Digest ◽  
2007 ◽  
Vol 56 (4) ◽  

Abstract AK Steel 409 Ultra Form was created for applications needing oxidation or corrosion protection beyond the capability of carbon steel and some coated steels. AK Steel 409 Ultra Form is more formable than standard Type 409 stainless steel and is particularly suitable for parts requiring more complex shapes and improved weldability. Examples of applications include automotive exhaust tubing and stampings. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties as well as deformation. It also includes information on high temperature performance as well as forming and joining. Filing Code: SS-990. Producer or source: AK Steel, Butler Operations.


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