scholarly journals Condensed Products of Boron Combustion in Secondary Chamber

2015 ◽  
Author(s):  
D.P. Liu ◽  
Z.X. Xia ◽  
J.X. Hu ◽  
L.Y. Huang
Keyword(s):  
Secondary Chamber

Morphology of the Gas Bladder in Sea Catfishes (Siluriformes: Ariidae)

Zootaxa ◽  
2010 ◽  
Vol 2579 (1) ◽  
pp. 59 ◽  
Author(s):  
ALEXANDRE P. MARCENIUK ◽  
JOSÉ L. O. BIRINDELLI
Keyword(s):  
Complex Network ◽  
Phylogenetic Relationships ◽  
The Family ◽  
Gas Bladder ◽  
Secondary Chamber

The morphology of the gas bladder and associated structures in sea catfishes (Siluriformes: Ariidae) is studied. The most simple gas bladder, exclusive to Galeichthys Valenciennes, is apple-shaped with weakly developed internal trabeculae, has smooth walls externally and a short Müllerian window associated with a broad, short Müllerian ramus that is firmly attached to Baudelot’s ligament and supracleithrum. Most genera of Ariidae have a cordiform bladder with welldeveloped trabeculae, smooth walls externally, an elongate Müllerian window and an elongate Müllerian ramus with an acute tip that is free from the Baudelot’s ligament and supracleithrum. Sciades proops (Valenciennes) and S. parkeri (Traill) have a similar gas bladder but with a well-developed secondary chamber. Other genera of Ariidae also have a cordiform bladder with well-developed trabeculae and elongate Müllerian window, but with lateral diverticula present as shallow rounded bulges or blister-like swellings along the peripheral margins of the bladder. The degree of development of lateral diverticula varies among and within species, with Osteogeneiosus Bleeker having the most highly-developed diverticula. Bagre pinnimaculatus (Steindachner) and Bagre bagre (Linnaeus) have unusual depressed gas bladders with complex network of internal trabeculae. The implications of gas bladder morphology for the taxonomy and phylogenetic relationships of the family are discussed.

DESIGN AND DEVELOPMENT OF USED AL-QURAN PAPER DISPOSAL SYSTEM

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Razali Hassan ◽  
Hafizi Azmi ◽  
Islah Mohamad Islah Bakri ◽  
M. Noorazuan Abd Wahab
Keyword(s):  
Combustion Chamber ◽  
Third Parties ◽  
Liquefied Petroleum Gas ◽  
Design And Development ◽  
Complete Combustion ◽  
Burning Process ◽  
Space Cost ◽  
Secondary Chamber ◽  
Small Capacity

The idea of this project was to design and fabricate a combustion chamber of incinerator for Quran paper burning with a capacity of 10 kg/h, which is heated by Liquefied Petroleum Gas, LPG as fuel for the burner. This small capacity 10kg/h incinerator is portable type. The focus customers are Department of Islamic Development, Malaysia, JAKIM and other Islamic authority in Malaysia that can dispose the Quran used paper with their own facility without sending out to third parties. The customer can reduce space, cost and time because the storage and transport are not required. This incinerator is a retort type consist of primary and secondary chambers. The secondary chamber is further divided into mixing and combustion sections . The function of secondary chamber is to provide complete combustion to Quran paper burning process. The temperature for primary chamber is set of range from 200 to 218 degree Celsius. This design is fabricated based on standard stated by Environment Authority.

Combustion Simulation in the Secondary Chamber of a Pilot-Scale Incinerator

2007 ◽  
Vol 24 (7) ◽  
pp. 905-916 ◽  
Author(s):  
Niko Samec ◽  
Filip Kokalj ◽  
Jyh-Yan Chen
Keyword(s):  
Pilot Scale ◽  
Combustion Simulation ◽  
Secondary Chamber

scholarly journals Fabrication of Magnetically Actuated Fluidic Drug Delivery Device Using Polyvinyl Chloride Adhesive Stencils

Micromachines ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 358 ◽  
Author(s):  
Hyun Kim ◽  
Jong-mo Seo
Keyword(s):  
Drug Delivery ◽  
Polyvinyl Chloride ◽  
Oxygen Plasma ◽  
Fabrication Method ◽  
Delivery Device ◽  
Saturation State ◽  
Drug Delivery Device ◽  
Magnetically Actuated ◽  
Plasma Treatments ◽  
Secondary Chamber

In this paper, a polydimethylsiloxane (PDMS) fabrication method is introduced. It eliminates the need for conventional fabrication methods, such as photolithography and etching. Only a series of oxygen plasma treatments, silanization, and polyvinyl chloride (PVC) adhesive stencils were used to develop multi-layer designs. The fabrication method was applied to fabricate a PDMS-based drug delivery device with an actively controllable, magnetically actuated valve. Above all, this fabrication method eliminated the use of a power-consuming pump. Fluidic substances were injected into the circular shaped primary chamber through a syringe. A secondary chamber, similar to the primary chamber’s structure but with a smaller radius and thinner membrane, was connected via a microchannel to regulate the amount released. When actuated with a permanent magnet for one second, the volume in the secondary chamber first depletes. As the magnet is removed, the valve closes. Subsequently, the primary chamber replenishes the secondary chamber. This process can be repeated until the primary chamber reaches a saturation state that can no longer inflate the secondary chamber. The device could release a few microliters per actuation. Various combinations of size and thickness of primary, and secondary chambers can realize release rate of desired amount.

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