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Journal of Engineering Research and Reports

Published by SCIENCEDOMAIN international · ISSN (electronic) 2582-2926

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500

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0

2026 articles

500

Open access

1,121

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Articles (500)

In Situ Precipitated Calcium Carbonate in the Presence of Pulp Fibers – A Beating Study

Klaus Dölle & Bardhyl Bajrami · Journal of Engineering Research and Reports · 2021

The paper industry around the world is in search for new ways to decrease production costs. New approached with additives such as new developed In Situ precipitated paper fillers materials have the potential to reduce production cost and increase profit margins. In Situ precipita...

Open access Research Article 10.9734/jerr/2021/v20i817352

Epoxy Fillet Height Study of Tapeless QFN Leadframe Package on Different Diebonders

E. Graycochea Jr., R. Rodriguez & F. R. Gomez · Journal of Engineering Research and Reports · 2021

The paper focused on the evaluation of quad-flat no-leads (QFN) device in tapeless leadframe technology on different diebonder platforms to achieve an acceptable fillet height performance. The study was narrowed down into two main machines with the objective of attaining a fillet...

Open access Research Article 10.9734/jerr/2021/v20i817353

Elimination of Intermetallic Coverage Over-etching on Aluminum Pad

Jonalyn Jaylo-Sia, Jonathan Pulido & Frederick Ray Gomez · Journal of Engineering Research and Reports · 2021

Intermetallic coverage (IMC) is one of the critical wirebond output responses that is usually checked to ensure the ball to pad integrity. The success of wirebonding relies on the formation of an interfacial intermetallic growth of ball bond to ensure it can withstand reliability...

Open access Research Article 10.9734/jerr/2021/v20i717351

Pattern Recognition System Program Advancement to Compensate Strip Expansion on 1-Map Strips

Maria Virginia S. Buera, Mariane A. Mendoza & Frederick Ray I. Gomez · Journal of Engineering Research and Reports · 2021

Package singulation process is where the whole strip was sheared to produce individual units. Existing singulation program for 1-map strip have only six (6) pattern recognition system (PRS) points along the whole strip with 240 mm length. Considering the length of the strip, it i...

Open access Research Article 10.9734/jerr/2021/v20i717349

Backside Chippings Improvement through Wafer Dicing Parameter Optimization and Understanding the Anistropic Silicon Properties

Aiza Marie E. Agudon & Bryan Christian S. Bacquian · Journal of Engineering Research and Reports · 2021

Semiconductor Companies and Industries soar high as the trend for electronic gadgets and devices increases. Transition from “manual” to “fully automatic” application is one of the advantages why consumer adapt to changes and prefer electronic devices as one of daily answers. Indi...

Open access Research Article 10.9734/jerr/2021/v20i717350

Utilization of the Karnaugh Map in Exploring Cause-effect Relations Modeled by Partially-defined Boolean Functions

Ali Muhammad Ali Rushdi & Raid Salih Badawi · Journal of Engineering Research and Reports · 2021

This paper utilizes a modern regular and modular eight-variable Karnaugh map in a systematic investigation of cause-effect relationships modeled by partially-defined Boolean functions (PDBF) (known also as incompletely specified switching functions). First, we present a Karnaugh-...

Open access Research Article 10.9734/jerr/2021/v20i717348

Gis-Based Multi Criteria Model for Location of Rice Aggregation Centers in Anambra State

C. D. Okpala, J. I. Igbokwe, C. O. Nwajinka, E. C. Igbokwe & J. I. Ubah · Journal of Engineering Research and Reports · 2021

Rice aggregation centers are tasked with checkmating substandard agricultural produce that are often encountered by the integrated millers during the course of buying from farm to farm to ensure already made market for their produce. Thus, it must be well placed to occupy strateg...

Open access Research Article 10.9734/jerr/2021/v20i717347

Experimental Design of Physical Unconfined Aquifer for Evaluation of Well Abstraction Effects: Laboratory Approach

Dak Bahadur Khadka · Journal of Engineering Research and Reports · 2021

In unconfined aquifer water flows in both horizontal and vertical direction when pumping. So its study during pumping action is more complex. Soil type, porosity, hydraulic conductivity and transmissivity are important parameters that control the specific yield, drawdown and radi...

Open access Research Article 10.9734/jerr/2021/v20i717346

Improving the Solder Joint Reliability Prediction Accuracy for Quad Flat No Lead Packages

Jefferson Talledo · Journal of Engineering Research and Reports · 2021

This paper discusses the modeling approach used in improving the solder joint reliability prediction for Quad Flat No Lead (QFN) packages. A new power equation fatigue prediction model was developed based on the accumulated creep strain energy density from FEA (finite element ana...

Open access Research Article 10.9734/jerr/2021/v20i717344

Influence of Fiber Properties on Harmonic and Intermodulation Distortions of Semiconductor Lasers

Moustafa Ahmed, Yas Al-Hadeethi & Ghodran Alghamdi · Journal of Engineering Research and Reports · 2021

This paper introduces modeling and simulation of the harmonic and intermodulation distortions of semiconductor laser radiating an optical fiber link. The study is based on the rate equation model of semiconductor lasers excited by injection current with two sinusoidal tones separ...

Open access Research Article 10.9734/jerr/2021/v20i717342