The Use of the Gamma-Ray Absorption Technique as a Quality Control Procedure in the Manufacture of Powder Metal Shaped Charge Liners

2010 ◽  
Vol 77 (5) ◽  
Author(s):  
J. J. Lawrie ◽  
F. J. Mostert ◽  
P. J. König ◽  
K. D. Werneyer
Keyword(s):  
Quality Control ◽  
Gamma Ray ◽  
Control Method ◽  
Radial Symmetry ◽  
Shaped Charge ◽  
Control Procedure ◽  
Powder Metal ◽  
Gamma Absorption ◽  
Absorption Technique

The use of the gamma-ray absorption technique as a tool in evaluating the quality of manufactured powder metal liners was investigated. With powder metal liners, it is not only of interest to know whether the liner conforms geometrically to the required specifications but it is also important to know whether there is radial symmetry in the density. Powder metal liners manufactured via compaction methods were subjected to a gamma absorption proof of principle experiment and it was concluded that the technique can serve as an effective quality control method in the manufacturing process of powder metal shaped charge liners.

scholarly journals Based on PCI Software Day Draw Satellite is Projective Like Making Technology Discussed in This Paper

2018 ◽  
Vol 227 ◽  
pp. 02013
Author(s):  
Ming Zhao ◽  
Rui Wang ◽  
Yongming Xu ◽  
Xiaochun Xu
Keyword(s):  
Quality Control ◽  
Production Process ◽  
Orthogonal Projection ◽  
Mass Production ◽  
Control Method ◽  
Quality Of Results ◽  
Quality Control Method ◽  
Software Production ◽  
Key Technologies

This article introduces the use of PCI software production day draw satellite is projective like production process, analyzes the key technologies in the production, summarizes the Suggestions to improve the quality of results, strengthen quality control method is proposed, for the day draw satellite orthogonal projection as mass production work has carried on the beneficial exploration.

scholarly journals Versatile Quality Control Methods for Nanopore Sequencing

2019 ◽  
Vol 15 ◽  
pp. 117693431986306
Author(s):  
Davide Bolognini ◽  
Roberto Semeraro ◽  
Alberto Magi
Keyword(s):  
Quality Control ◽  
Control Method ◽  
Nanopore Sequencing ◽  
Control Methods ◽  
Sequencing Data ◽  
Third Generation Sequencing ◽  
Quality Control Method ◽  
Sequencing Platforms ◽  
Generation Sequencing

Third-generation sequencing using nanopores as biosensors has recently emerged as a strategy capable to overcome next-generation sequencing drawbacks and pitfalls. Assessing the quality of the data produced by nanopore sequencing platforms is essential to decide how useful these may be in making biological discoveries. Here, we briefly contextualized NanoR, a quality control method for nanopore sequencing data we developed, in the scenario of preexistent similar tools. We also illustrated 2 quality control pipelines, readily applicable to nanopore sequencing data, respectively, based on NanoR and PyPore, a second quality control method published by our group.

scholarly journals Quality control of digital representations of manuscript texts: proposal of a standards-based method

2021 ◽  
Vol 5 (1) ◽  
pp. 27-44
Author(s):  
Jesús Robledano Arillo
Keyword(s):  
Quality Control ◽  
Digital Image ◽  
Control Method ◽  
Automated Analysis ◽  
Quality Model ◽  
Digital Representations ◽  
Quality Control Method ◽  
Physical Attributes ◽  
High Level

Abstract This study aims to propose a quality control method for digitized versions of manuscript documents that will be relevant for paleographical and codicological analysis. The methodology applied consisted of a systematic review of papers related to automated analysis of the physical characteristics of handwritings and document supports in the field of digital paleography, as well as of the numerous standards that have been emerging in the field of image engineering for quality assessment in digital image recordings. We also worked with a sample of 275 digital representations of pages or double pages of manuscript documentation dating to between the 12th and 17th centuries. As a result of this study, we propose a taxonomy of physical attributes of the handwritings and of their documentary supports that must be represented in the digital image with a high level of fidelity and without any distortions that could lead scholars to erroneous interpretations of the physical and formal characteristics of the original documents. On the basis of this taxonomy, we identified a set of typical distortions caused by digitization processes that can affect the recording quality of the physical attributes previously proposed, as well as a set of parameters and metrics for measuring quality that can be used to create a sufficiently exhaustive quality model. We also detected a series of limitations which, if not properly managed, can compromise the effectiveness of these types of controls.

Error propagation model and optimal control method for the quality of remanufacturing assembly

2021 ◽  
pp. 1-15
Author(s):  
Wenyi Li ◽  
Cuixia Zhang ◽  
Conghu Liu ◽  
Xiao Liu
Keyword(s):  
Optimal Control ◽  
Quality Control ◽  
Error Propagation ◽  
Control Method ◽  
State Space Model ◽  
Propagation Model ◽  
Initial State ◽  
Work In Process ◽  
Optimal Control Method

In order to improve the quality of remanufacturing assembly with uncertainty for the sustainability of remanufacturing industry, an error propagation model of the remanufacturing assembly process and its optimal control method are established. First, the state space model of error propagation is established by taking the work-in-process parameter errors of each process as the initial state of the procedure and the parameters of remanufactured parts and operation quantities as the input. Then, the quality control issue of remanufacturing assembly is transformed into a convex quadratic programming with constraints based on this model. Finally, the proposed method is used to control the remanufactured-crankshaft assembly quality. The experimental results show that the axial-clearance consistency and the crankshaft torque are improved, and the one-time assembly success rate of a remanufactured crankshaft is increased from 96.97%to 99.24%. This study provides a theoretical model and method support for the quality control of remanufacturing assembly and has a practical effect on improving the quality of remanufactured products.

Optimal Quality Control Based on Mascot and PTM Score Model for Phosphopeptides Identification

2014 ◽  
Vol 530-531 ◽  
pp. 185-188
Author(s):  
Xiao Zhou Chen
Keyword(s):  
Quality Control ◽  
Control Method ◽  
Database Searching ◽  
Phosphorylation Sites ◽  
Control Methods ◽  
Site Assessment ◽  
Quality Control Method ◽  
Score Model ◽  
Optimal Quality

There are currently various algorithms with mass spectrometry in phosphorylation identification. Some quality control methods have also been proposed. However, a detailed comparative analysis among various methods has not been reported. In the paper, based on the theory of forward-reverse databases searching, we compare current major algorithms in database searching and identification i.e Mascot and Sequest, and compare various aspects and methods of algorithms in site assessment. We propose an effictive quality control method. Our result shows that this method can ensure the quality of identification and identify more phosphorylation sites.

Studies on the Quality Control of Low-Sugar Preserved Kiwifruit

2011 ◽  
Vol 268-270 ◽  
pp. 16-19
Author(s):  
Kai Sheng Zhang ◽  
Jiao She
Keyword(s):  
Quality Control ◽  
Control Method ◽  
Fruit Production ◽  
Control Technique ◽  
Control Methods ◽  
Key Factors ◽  
Preserved Fruit ◽  
The Comparative Study ◽  
Technical Basis

Analysis of low-sugar preserved Kiwifruit processing status and the key factors of quality control, based on the comparative study of different control methods, fuzzy control technique is applied to the quality control of low-sugar preserved Kiwifruit with using the embedded microcontroller processor to design the system controlling hardware, and the system software flowchart. The control studies of the end product quality of the low-sugar preserved Kiwifruit can provide the technical basis and process control method for low-sugar food-preserved fruit production process , so the corresponding products satisfy the people's low-sugar and low-calorie requirements.

scholarly journals Approach formation for the development of compounding preparation monographs

2018 ◽  
pp. 69-77
Author(s):  
O. A. Zdoryk ◽  
V. А. Georgiyants ◽  
O. I. Gryzodub
Keyword(s):  
Quality Control ◽  
Control Method ◽  
The State ◽  
Acceptable Range ◽  
National University ◽  
Requirements Quality ◽  
Using Data ◽  
Experimental Researches ◽  
Selection Of

Questions of standardization of compounding preparations are quite relevant both in Ukraine and abroad. Today the general monograph «5.N.1. Extemporaneous preparations» of the State Pharmacopoeia of Ukraine is revised by the staff of the Ukrainian scientific pharmacopoeial center for quality of medicines and the National University of Pharmacy, also the additional articles for compounding preparations are developed. The aim of this work is substantiation of the structure and format of the compounding preparation monographs for introduction to the national part of the State Pharmacopoeia of Ukraine. The researches were performed using data of the world pharmacopoeias and national formularies, as well as the experience of standardization of compounding preparations in Ukraine and the USSR. In the study, general statements for the development of compounding preparations monographs were formed and its structure was discussed. The requirements and examples are described for each item of the monograph. For monographs of the State Pharmacopoeia of Ukraine such structure were offered: name, composition, lists the acceptable range of labeled amount of main ingredient, technology of preparation, reference for the general monographs, properties, identification, tests, assay, expiration date, labeling, storage, references to the regulatory documents, and indications. For systematization of the monographs’ development procedure the work order was composed. The procedure of monographs development includes selection of the object, study of literature data, and study of the basic stages of the compounding process, evaluation of quality control methods, experimental researches, and conclusion about conformity with the requirements, quality control method validation protocols, stability studies, and development of the monograph’s draft. As the result of research the structure, format, stages and order of the development of compounding preparations’ monographs for introduction to the State Pharmacopoeia of Ukraine were proposed.

scholarly journals Quality control of constructions: European trends and developments

2017 ◽  
Vol 9 (2) ◽  
pp. 143-161 ◽  
Author(s):  
Frits Meijer ◽  
Henk Visscher
Keyword(s):  
Quality Control ◽  
Control Systems ◽  
European Countries ◽  
Control Procedure ◽  
Strategic Choices ◽  
Content Type ◽  
Control Framework ◽  
Quality Aspects ◽  
Practical Experiences

Purpose This paper aims to evaluate the quality control systems for constructions in seven countries in Europe with the purpose to trace innovative approaches and best practices that can serve as examples for other countries. Design/methodology/approach The paper is based on a series of research projects carried out over a number of years. The research results were updated in 2016 with a desktop research project in seven European countries. The results from this latest project form the heart of this paper. The information is organised into tables that describe and analyse the main features of the quality control systems of the countries (e.g. scope, focus and main characteristics of the procedures and quality demands on building professionals). Findings Several similar trends can be recognised in the quality control systems of the various European Union (EU) countries. Quality control is getting more and more privatised and the control framework is setting checks and balances throughout the construction process. Other findings are that scope and focus of the statutory control is unbalanced. Within the control processes emphasis is put on the safety aspects of complex constructions. Far fewer demands are made on the quality of the builders. Re-orientation of the building regulatory framework seems to be needed. Research limitations/implications The paper only focusses on European countries where private quality control is established and on selected topics. The findings are based on desktop research and not on the practical experiences of the stakeholders involved in the countries studied. Practical implications The paper draws some important recommendations for policymakers in the building regulatory field. It suggests both an enhancement of the effectiveness of the quality control procedure as well as the commitment of builders to comply with the regulations. Social implications The quality of constructions is essential for the wellbeing and safety of its users, its occupants or its visitors. This applies to the whole range of quality aspects: structural- and fire safety, health, sustainability and usability aspects. The analyses and recommendations of this paper aim to contribute to an improvement of the overall construction quality. Originality/value The paper makes an original contribution to the (limited) literature that is available in this field. The results can be used to situate the quality control systems of each member state within the EU, to assess the main trends, and it can be used as a guide to develop strategic choices on possible improvements in each country.

scholarly journals Perbaikan Kualitas Produk Tas Kulit dengan Menggunakan Metode Teorija Rezhenija Izobretatelskih Zadach (TRIZ) pada CV. X – Bandung

2021 ◽  
Vol 1 (1) ◽  
pp. 43-48
Author(s):  
Mochammad Iqbal Syidik ◽  
M Dzikron ◽  
Iyan Bachtiar
Keyword(s):  
Quality Control ◽  
Product Quality ◽  
Control Method ◽  
Leather Industry ◽  
Air Conditioners ◽  
Average Percentage ◽  
Machine Maintenance ◽  
Cutting Knife ◽  
A Company

Abstract. CV. X is a company engaged in the leather industry that manufactures wallets, bags and key chains. The company experienced a decrease in sales volume due to a decrease in product quality from defective products in the company. Leather bags have an average percentage of disability of 2.39% in 2017-2018 from the company's disability limit of 2%. The existence of these defective products requires companies to improve product quality to reduce the occurrence of defects. The method used to solve the problems that are being faced by the company is the Seven Tools Quality Control method to identify the causes of product defects, while the Rezhenija Izobretatelskih Zadach (TRIZ) method is used to design a product quality improvement plan. The result of data processing which becomes the main priority is defect cutting. The causes of cutting defects include decreased work concentration, inadequate workers, poor physical condition, no machine maintenance, blunt cutting machines, high cutting machine use intensity, work environment, hot room temperature, lack of work space lighting. All causes of product defects are designed to improve the quality of leather bag products by creating visual controls, forms for worker health, cutting knife replacement machines, installing air conditioners, and adding lights to the sewing machine. Abstrak. CV. X merupakan perusahaan yang bergerak di bidang industri kulit yang memproduksi dompet, tas, dan gantungan kunci. Perusahaan mengalami penurunan volume penjualan yang disebabkan karena adanya penurunan kualitas produk dari produk cacat di perusahaan. Tas kulit memiliki rata-rata persentase kecacatan sebesar 2,39% pada tahun 2017-2018 dari batas kecatatan yang ditetapkan perusahaan sebesar 2%. Adanya produk cacat tersebut mengharuskan perusahaan melakukan perbaikan kualitas produk untuk mengurangi terjadinya kecacatan. Metode yang digunakan untuk menyelesaikan permasalahan yang sedang dihadapi oleh perusahaan yaitu metode Seven Tools Quality Control untuk mengidentifikasi penyebab terjadinya kecacatan produk, sedangkan metode Teorija Rezhenija Izobretatelskih Zadach (TRIZ) digunakan untuk membuat rancangan perbaikan kualitas produk. Hasil pengolahan data yang menjadi prioritas utama yaitu cacat potong. Penyebab cacat potong diantaranya yaitu konsentrasi kerja menurun, pekerja kurang hati-hati kondisi fisik kurang baik, tidak ada perawatan mesin, mesin potong tumpul, intesitas penggunaan mesin potong tinggi, lingkungan kerja, suhu ruangan panas, pencahayaan ruang kerja kurang. Semua penyebab cacat produk dibuat rancangan perbaikan untuk meningkatkan kembali kualitas produk tas kulit dengan membuat visual control, form untuk kesehatan pekerja, mesin penggantian pisau potong, pemasangan AC, serta penambahan lampu pada meisn jahit.

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