scholarly journals Analisis Perencanaan Persediaan Suku Cadang dengan Metode ABC dan Metode Min-Max di Bagian Fields Service Engineer PT. Merck Chemicals and Life Science

Barometer ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 295-300
Author(s):  
Raihan Alif Maulana ◽  
Dene Herwanto ◽  
Kusnadi Kusnadi

Keberhasilan suatu perusahaan dicerminkan oleh kemampuan manajemen untuk memanfaatkan peluang secara optimal sehingga dapat menghasilkan penjualan dan laba sesuai dengan yang diharapkan. PT. Merck Chemicals and Life Science terdiri dari beberapa departemen yang saling terkait dan secara terpadu berusaha mewujudkan tujuan perusahaan. Terutama untuk perbaikan penggantian suku cadang, sangat dibutuhkan perencanaan suku cadang, agar pelanggan tidak harus menunggu dan pekerjaan terhenti karena stok suku cadang habis, dan juga tidak kelebihan stok yang menyebabkan kelebihan dalam pemesanan. Dengan begitu, penelitian ini dilakukan untuk menyelesaikan masalah persediaan suku cadang yang dihadapi PT. MCLS. Pada penelitian ini, pengendalian persediaan suku cadang akan menggunakan metode ABC, yang mana akan membagi suku cadang yang ada kedalam 3 kelompok berdasarkan nilai jual tertinggi diantara suku cadang yang lain dan tingkat kebutuhannya. Hasil dari penelitian ini menunjukan perencanaan persediaan suku cadang di PT. Merck Chemicals and Life Science sangat diperlukan, mengingat belum adanya perencanaan persediaan suku cadang di perusahaan. Dari hasil pengklasifikasian ABC pada hasil penjualan suku cadang, PT. MCLS dapat memprioritaskan untuk memesan suku cadang kelompok A dikarenakan kelompok suku cadang A bernilai 56% dari seluruh penjualan suku cadang dengan menjual 33% dari total permintaan suku cadang yang ada pada periode Juli 2018 hingga Maret 2020.

Author(s):  
Uwe Lücken ◽  
Michael Felsmann ◽  
Wim M. Busing ◽  
Frank de Jong

A new microscope for the study of life science specimen has been developed. Special attention has been given to the problems of unstained samples, cryo-specimens and x-ray analysis at low concentrations.A new objective lens with a Cs of 6.2 mm and a focal length of 5.9 mm for high-contrast imaging has been developed. The contrast of a TWIN lens (f = 2.8 mm, Cs = 2 mm) and the BioTWTN are compared at the level of mean and SD of slow scan CCD images. Figure 1a shows 500 +/- 150 and Fig. 1b only 500 +/- 40 counts/pixel. The contrast-forming mechanism for amplitude contrast is dependent on the wavelength, the objective aperture and the focal length. For similar image conditions (same voltage, same objective aperture) the BioTWIN shows more than double the contrast of the TWIN lens. For phasecontrast specimens (like thin frozen-hydrated films) the contrast at Scherzer focus is approximately proportional to the √ Cs.


Author(s):  
Judith M. Brock ◽  
Max T. Otten

A knowledge of the distribution of chemical elements in a specimen is often highly useful. In materials science specimens features such as grain boundaries and precipitates generally force a certain order on mental distribution, so that a single profile away from the boundary or precipitate gives a full description of all relevant data. No such simplicity can be assumed in life science specimens, where elements can occur various combinations and in different concentrations in tissue. In the latter case a two-dimensional elemental-distribution image is required to describe the material adequately. X-ray mapping provides such of the distribution of elements.The big disadvantage of x-ray mapping hitherto has been one requirement: the transmission electron microscope must have the scanning function. In cases where the STEM functionality – to record scanning images using a variety of STEM detectors – is not used, but only x-ray mapping is intended, a significant investment must still be made in the scanning system: electronics that drive the beam, detectors for generating the scanning images, and monitors for displaying and recording the images.


2006 ◽  
Vol 32 (10) ◽  
pp. 468-468
Author(s):  
Anne Kaufhold ◽  
Ulrich Rendenbach
Keyword(s):  

Science Scope ◽  
2014 ◽  
Vol 038 (03) ◽  
Author(s):  
Kenneth Roy
Keyword(s):  

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