Long-term storage life of light source modules by temperature cycling accelerated life test

2014 ◽  
Vol 35 (5) ◽  
pp. 054010 ◽  
Author(s):  
Ningning Sun ◽  
Manqing Tan ◽  
Ping Li ◽  
Jian Jiao ◽  
Xiaofeng Guo ◽  
...  
1990 ◽  
Vol 203 ◽  
Author(s):  
Wei H. Koh ◽  
S. Mayemura ◽  
W. Kuipers

ABSTRACTLong term reliability of flip-chip bump bonding for application in infrared detector interconnection is investigated. The effectiveness of a thin film nickel as diffusion barrier for reducing indium-gold intermetallic formation is studied by accelerated life test and destructive physical analysis. A new interconnect structure replacing the conventional bump-to-bump configuration is described.


2021 ◽  
pp. 65-72
Author(s):  
Ludmila Pusik ◽  
Vlаdimir Pusik ◽  
Veronika Bondarenko ◽  
Ludmila Gaevaya ◽  
Nina Lyubymova ◽  
...  

Kitchen beetroots have a series of high-value parameters: good taste properties, healing-prophylactic importance, ability to long-term storage. There are many sorts of kitchen beetroot, different by root form. Most widespread are ones of the round and cylindrical forms. At the same time plants of kitchen beetroot at growing form roots of different masses. The aim of the study was to investigate the storage life of kitchen beetroot depending on form and root sizes. The conducted studies give a possibility to substantiate scientifically an influence of kitchen beetroots’ form and sizes on their storage life for determining its term. It has been established, that roots of the round form of the Kharkiv Bordo sort lost moisture more intensively at the expanse of breath and evaporation – 4.4–5.4 %. In the Vital sort with roots of the cylindrical form, mass natural losses were 4.1–5.1 %. At that more natural mass losses were in small roots with mass 150–300 g. Small roots were more inclined to sprouting at storage. Among sprouted roots, 1.6–1.8 % were small ones with mass 150–300 g. More percent of sprouted roots was for ones with mass 500–700 g as 2.3–2.5 %. At that less percent of sprouted roots was in the Vital sort of the cylindrical form. Small roots with mass 150–300 g were more damaged by rots at storage – 10.4–12.3 %. Among roots of middle sizes, 6.0–6.8 % were damaged by rots, among big ones – 4.5–4.7 %. It must be also noted, that cylindrical roots of the Vital sort were less damaged by rots at storage than round ones of the Kharkiv Bordo sort


1977 ◽  
Vol 17 (88) ◽  
pp. 866
Author(s):  
PR Hedberg

Table grape storage experiments were conducted in 1974 and 1975 with Nyora grapes to enable the extension of marketing periods. Grapes were packed in half-bushel (450 mm x 290 mm x 135 mm) boxes and stored in a standard cool room with various treatments. In 1974 two-stage SO2 generators, polyethylene liners and tight or loose packing were compared using grapes treated with field benomyl sprays. SO2 generators proved very effective in maintaining grape quality, particularly when used with polyethylene liners and a loose pack, enabling a storage life of four months. In 1975 the best treatment was reassessed in both wooden boxes and the cheaper cardboard box. Unwaxed cardboard boxes were inferior to wooden boxes for storing grapes. Field benomyl sprays were marginally beneficial in controlling moulds in storage. In 1975 benomyl treated grapes packed loose with a polyethylene liner and two-stage SO2 generators, were kept in an acceptable condition for six months.


1978 ◽  
Vol 41 (11) ◽  
pp. 919-924 ◽  
Author(s):  
W. A. MOATS

Cleaning eggs by washing was in the past widely condemned but is now a common practice and required in plants operating under Federal Grading Service. Washing commonly resulted in increased spoilage losses during long term storage. Washing practices that promoted spoilage included using: (a) wash water colder than the eggs, (b) wash water with high bacterial counts, (c) wash water containing appreciable soluble iron, and (d) washing machines with surfaces contaminated by bacteria. Occasionally spoilage losses were substantial during long term storage even though apparently satisfactory washing practices were followed. Treatment with sanitizing chemicals did not destroy bacteria embedded in shells. Long term storage life is of little concern with present day marketing practices since few eggs are stored for extended periods. However, iron in washwater may accelerate spoilage. Washing, besides improving appearance of eggs, was effective in removing surface dirt and bacteria which would otherwise have contaminated egg meats when eggs were broken out.


2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.


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