Modelling the Heating Process in the Transient and Steady State of an In Situ Tape-Laying Machine Head

As the use of composite materials increases, the search for suitable automated processes gains relevance for guaranteeing production quality by ensuring the uniformity of the process, minimizing the amount of scrap generated, and reducing the time and energy consumption. Limitations on production by traditional means such as hand lay-up, vacuum bagging, and in-autoclave methods tend not to be as efficient when the size and shape complexity of the part being produced increases, motivating the search for alternative processes such as automated tape laying (ATL). This work aims to describe the process of modelling and simulating a composite ATL with in situ consolidation by characterizing the machine elements and using the finite differences method in conjunction with energy balances in order to create a digital twin of the process for further control design. The modelling approach implemented is able to follow the process dynamics when changes are made to the heating element and to predict the composite material temperature response, making it suitable for use as a digital twin of a production process using an ATL machine.

Impact of Physical Factors of Workplace Environment on Workers Performance in Industry

Workers’ performance and efficiency are dependent on their workplace facilities. The present study attempts to identify the six physical factors of the workplace environment: furniture and equipment design, air quality, temperature, sanitation, lighting and noise. Workers' feedback is evaluated by using 5 scale Likert method and it is found that found workplace temperature is most critical for workers' performance. The purpose of this study is to identify workers' impressions about their workplace environment and provide a better understanding to the managers about improvement. Industry-level emphasis on these factors can improve workers' performance standards and production quality. Previous work performance studies are not focused on hygiene and sanitation facility but due to the corona pandemic situation sanitation concern has been raised. This study aims to explore the relationship of these factors with gender and work experience of the workers. Variation in each group has provided an understanding of the basic demand of each type of worker. Journal of Engineering Science 12(3), 2021, 57-66

Overview on the digitized production of welded steel structures

This paper presents a concept and practical topics involved in digitized production. The term “production” denotes the design, fabrication, and service life of a product, which in this case elaborates on welded steel structures. This includes the required information for guiding all the process stages of the chosen material back to its re-melting, following the material flow in a fully digitized form. This concept enables an increase in production quality at a higher level while minimizing the risk of human errors. Automation of the short-run production of steel structures for demanding applications is also a key goal, together with securing a cost-efficient process. Typically, such structures are fabricated from high- or ultra-high-strength steels. Though challenging, reaching these aims seems to be realistic by applying advanced fatigue design methods, using high-quality robotic welding and receiving information about the real loading of the structure.

Reading Between the Lines

This chapter contributes to strategic management studies in family firms by focusing on innovation strategies as drivers to guarantee firm survival across generations. Specifically, built on the construct of family business innovation posture and based on the content analysis of 10 small and medium family firm narratives, this chapter identifies the figure of the father as the cornerstone in whom innovation strategies have their origin and their evolution as firm-driven, family-driven, and/or market-driven. The chapter proposes a model that highlights the dimensions of family heterogeneity and provides new insights into the relationship between the role of the father figure and three drivers related to family business innovation: product and production quality, past knowledge, and risk-taking propensity.

Produksi Dan Kualitas Jerami Padi Sumber Hijauan Pakan Dengan Waktu Panen Dan Dosis Pupuk Berbeda

This study was aimed to analyze the fertilizer dosage and harvest age in Ciherang rice varieties to increase the rice straw production and quality. This study used a block randomized design with 3 x 4 blocks divided based on harvest age H1 = 114 days, H2 = 118 days and H3 = 122 days. The treatment was fertilizer dose level which consists of 4 levels, namely: P0 (control) = Urea 55 g+SP-36 5 g+KCl 6 g, P1= Urea 63,25 g+SP-36 5 g+KCl 6 g, P2= Urea 71,50 g+SP-36 5 g+KCl 6 g dan P3= Urea 79,75 g+SP-36 5 g+KCl 6 g. The variables observed were straw production, grain production, filled grain production, empty grain production, crude protein (CP), crude fiber (CF), Acid Detergent Fiber (ADF) and Neutral Detergent Fiber (NDF). Data were analyzed using analysis of variance followed by Duncan's Multiple Range Test. The results showed that P3 was significantly (p< 0.05) the highest among fertilizer dose level treatments on the straw production (27.63 tons ha-1), filled grain production (5.52 tons ha-1), and reduced empty grain (0.15 tons ha-1). The Quality of rice straw were CP 7.49%, CF 20.35%, ADF 55.03 %). While at harvest age, H1 was significantly (p< 0.05) the highest among harvest ages treatments on the variables of straw production 28.18%, empty grain production 0.21 tons ha-1) and NDF 69.11%. It can be concluded that the best fertilizer dosage was an addition of urea by 45% with harvesting age of 114 days. Key words: fertilizer, harvest age, production, quality, rice straw

Processing and Compatibility of Corydalis yanhusuo: Phytochemistry, Pharmacology, Pharmacokinetics, and Safety

Processed and polyherbal formulations (compatibility) are widely used in traditional Chinese medicine (TCM). However, processing and compatibility may alter the efficacy and safety of herbal medicines, and therefore, evaluating the herbal medicines changes after processing and compatibility is important for their safety. Since Corydalis yanhusuo (Y.H.Chou & Chun C.Hsu) W.T.Wang ex Z.Y.Su & C.Y.Wu (Family: Papaveraceae and Genera: Corydalis), a traditional medicinal plant in China, Japan, Korea, and other Asian countries, has been used for treating a wide range of medical conditions, it is an ideal representative of studying the effects of processing and compatibility on efficacy and toxicity. In this paper, information was obtained by searching electronic databases, classic books, PhD and MSc dissertations, local conference papers, and unpublished materials prior to July 2021. We provide a summary of the phytochemistry, pharmacology, pharmacokinetics, quality control, and safety of C. yanhusuo under various processing or compatibility conditions. Based on our findings, vinegar processing is probably the best C. yanhusuo processing method, which could increase the absorption rate of tetrahydropalmatine (THP) in the heart, liver, spleen, lung, and brain tissues and alleviate mice muscle tremors and liver damage caused by C. yanhusuo. These results indicate that processing and compatibility can reduce toxicity and increase the efficacy of C. yanhusuo. The information provides an expanded understanding of the efficacy and toxicity mechanisms of TCM compounds, which is valuable for industrial production quality control and future drug research.

Analysis of Current Production Status and Key Existing Problems of Tower-Shaped Solar Molten Salt Storage Tank

In this paper, the development and prospect of tower-shaped solar thermal power generation technology are briefly introduced, and the importance of production quality of molten salt storage tank in tower thermal power storage system is proposed. The production technology and construction process of molten salt storage tank are described in detail, and the key technology and multiple problems affecting quality are analysed. Aiming at the problem of fillet weld deformation, this paper proposes a new anti-deformation tooling and welding operation technology. At last, this paper presents a construction technology method and a solution to improve the welding quality of molten salt storage tank, which can effectively solve the problem that the bottom plate of molten salt storage tank is out of standard due to welding.

The Yoruba News as a Political Tool and Avenue for Cultural Revival

The Yorubà News, published by Obasa ̣, co-pioneered journalism, nay publishing, in Yorùbá language in southwestern Nigeria. Based in Ìbàdan and ̀ published by Ìlarè Printers, ̣́ The Yorùbá News, a bi-lingual serial in English and Yorùbá languages, remarkably had varying contents and wide circulation covering its locale, Íbàdan significantly; the southern protectorate, particularly Yorùbá land appreciably; and the entire nation, Nigeria marginally. Published weekly, Obasa – the Editor and Proprietor – successfully edited ̣ The Yorubà News ́ for over two decades from 1924 – 1945 when he died. Adopting the Diffusion of Innovations theory, this study examines the form and content of the newspaper. The form examines the structure and layout of the newspaper while the content discusses and evaluates issues covered in the publication. The form of The Yorùbá News is discussed in the context of the print media as a periodical by taking technical cognizance of its physical features: format, design and layout, typography, columns, paper, size and production quality. Content-wise, the paper exhaustively describes the subject matters of The Yorubà News ́ by dwelling critically on the issues raised, examining in details and critiquing its recurrent subject matters notably: the news stories, editorials, cover, advertorials, news and notes, etc. The inter-dependence of form and content is also examined to bring to the fore the social, cultural, political, and economic values of the maiden Yorùbá Newspaper: The Yorùbá News.

The Form and Content of Ọbasa’s Weekly Newspaper: The Yorùbá News

The Yorubà News, published by Obasa ̣ , co-pioneered journalism, nay publishing, in Yorùbá language in southwestern Nigeria. Based in Ìbàdan and ̀ published by Ìlarè Printers, ̣́ The Yorùbá News, a bi-lingual serial in English and Yorùbá languages, remarkably had varying contents and wide circulation covering its locale, Íbàdan significantly; the southern protectorate, particularly Yorùbá land appreciably; and the entire nation, Nigeria marginally. Published weekly, Obasa – the Editor and Proprietor – successfully edited ̣ The Yorubà News ́ for over two decades from 1924 – 1945 when he died. Adopting the Diffusion of Innovations theory, this study examines the form and content of the newspaper. The form examines the structure and layout of the newspaper while the content discusses and evaluates issues covered in the publication. The form of The Yorùbá News is discussed in the context of the print media as a periodical by taking technical cognizance of its physical features: format, design and layout, typography, columns, paper, size and production quality. Content-wise, the paper exhaustively describes the subject matters of The Yorubà News ́ by dwelling critically on the issues raised, examining in details and critiquing its recurrent subject matters notably: the news stories, editorials, cover, advertorials, news and notes, etc. The inter-dependence of form and content is also examined to bring to the fore the social, cultural, political, and economic values of the maiden Yorùbá Newspaper: The Yorùbá News.

WINGKO INDUSTRY SUSTAINABILITY IMPROVEMENT STRATEGY USING THE BUSINESS MODEL CANVAS (BMC) METHOD

Wingko is one of Indonesian Snack from Babat of Lamongan Regency which is produced by UMKM Klapa Muda. Compete makes the production unstable, even decreased. Right now UMKM Klapa Muda must develop rapidly, because there are already many competitors selling similar products. In this study using the Business Model Canvas Development that is assisted using the Internal factor Evaluation matrix, External Factor Evaluation, Internal-External, SWOT matrix analysis, and QSPM (Quantitative Strategic Planning Matriks) analysis. For the weighting stage, 5th priority strategies used for market penetration and product development by applying Business Model Canvas (BMC) concept to UMKM Klapa Muda Babat strategy, it is 1) Customer Relationship Increasing promote activities with a value of 2,401, 2) Customer Segments establish customer loyalty with a value of 2,386, 3) Value Proposition guarantees production quality and mproves products with a value of 2.24, 4) Channels has a relationship with the government with a value of 2,015, 5) Key Resources Development of machine and equipment technology with a value of 1,308.