• Title/Summary/Keyword: mPossum

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Double Side SMT and Molding Process Development for mPossum Package

  • Kim, ByongJin;Cho, EunNaRa;Kim, ChoongHoe;Lee, YoungWoo;Lee, JaeUng;Ryu, DongSu;Jung, GyuIck;Kang, DaeByoung;Khim, JinYoung;Yoon, JuHoon;Kim, Sun-Joong
    • Journal of the Microelectronics and Packaging Society
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    • v.23 no.4
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    • pp.43-48
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    • 2016
  • 3-Dimensional System in Package (3-D SiP) structure (Amkor calls it mPossum-molded Possum) using double side Surface Mount Technology (SMT) and double side molding was evaluated in order to achieve small/thin form factor as well as good functionality by integration and double side layout. As the new platform on laminate substrate basis, molding process was challenge in mold flow balance at top and bottom side and package warpage control over the overall assembly process. There were two types of different molding process evaluated with 1) 1-step molding which was done at both side at the same time and 2) 2-step molding which was done at the conventional molding process twice. Mold simulation helped to narrow down the material selections and parameters available before actual sample build. There were many challenges for this first trial in design/ parameter and material types but optimized them to enable this structure.

Diagnosis of bovine cryptosporidiosis by indirect immunofluorescence assay using monoclonal antibody (단세포군항체를 이용한 간접형광항체법에 의한 송아지 작은와포자충증의 진단)

  • Wi, Seong-Hwan;Lee, Jeong-Gil;Ju, Hu-Don
    • Parasites, Hosts and Diseases
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    • v.33 no.2
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    • pp.107-116
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    • 1995
  • Two hybridoma cell lines against Cwptosporinium possum oocysts nFRl-CN911 were produced. The isotype of these 2 monoclonal antibodies (mAbs) was IgG2b (lE7.2) and and IgM (C6). Enzyme immuno-transfer blotting analysis showed that 157.2 reacted specifically to 36 kDa protein and C6 reacted to 67 and 70 kDa proteins. C. pcnlum was bound specifically to the surface region of oocysts by these mobs. No cross-reactivity was observed with tachyzoites of ToxopLosma gonnii and oocysts of Eimeria zuernii,5. bouis and E. canadensis of bovine origin. The indirect immunofluorescence assay (IIF) using mAb C6 was successful with counterstain. With the IIF using mob C6, oocysts appeared as 3 to $5{\mu}m$ spherical objects fluorescing bright apple green against a reddish dark background. The IIF using mAb C6 was agreed in specificity and sensitivity with those of a commercial diagnostic kit. These results demonstrated that the produced mAbs were specific to C. parvum and that the mAb C6 could be used for diagnosis of cryptosporidiosis.

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