Recent Patents on Petroleum Pipe Inspection Gauge in China

Background: With a great growing demand for petroleum, the amount of petroleum pipe is also increasing, and petroleum pipe blockage has become a severe problem in China. It is necessary to clean and inspect the petroleum pipe regularly. But the current petroleum pipe in-spection gauge can very easily block the petroleum pipe ,while the cleaning efficiency is poor. Therefore, the anti-blocking capacity and high-efficiency cleaning ability of the petroleum pipe inspection gauge has been paid more and more attention. Objective: By analyzing and discussing the patents of petroleum pipe inspection gauges in China in recent years, the future design of petro-leum pipe inspection gauge has been provided and some valuable conclusions have been summarized to solve the current problems of pipe inspection gauge. Methods: This paper studied and compared various representative patents relevant to the petroleum pipe inspection gauge. Results: By summarizing a large number of patents about petroleum pipe inspection gauges in China, the anti-blocking capacity or cleaning efficiency of those patents are analyzed and compared, and the further development tendency of petroleum pipe inspection gauges has been discussed. Conclusion: The problems of easy blocking for petroleum pipe inspection gauge and poor cleaning efficiency are still exist. It is still the main development trend for the study on anti-blocking capacity and the improvement of cleaning efficiency. The future work can be focused on pigging technical cooperation, new materials, power source and intelligent control.

Promoting Construction Industrialisation with Policy Interventions: A Holistic Review of Published Policy Literature

By adopting the concept of ‘factory assembly followed by onsite installation,’ construction industrialisation (CI) plays an increasingly important role in sustainable urban development. CI can enhance construction quality and efficiency while reducing environmental impacts. To promote the CI, several policy interventions have been developed and implemented in different countries and regions. This study reviews the global CI promoting regulations and policies to provide a comprehensive insight into its interrelationship and development tendency. The research selects 105 publications related to practical CI policy from widely utilised databases (i.e., Web of Science and Scopus). Based on the annual publication trend analysis, geospatial distribution, and citation analysis, seven interrelated critical CI policy formulation themes are identified and examined: regulatory policies, standardised policies, promotional policies, urban design and planning policies, technological policies, managerial and educational policies, and sustainability policies. In addition, internal correlations and mutual influence among these seven classified policies are explored and discussed, which helps scholars enhance their grasp of current CI policy research and guide future research. This review provides the research community and industrial practitioners with a comprehensive understanding of various CI-promoting policies and a roadmap to CI-promoting policy development and evaluation.

Linc01018 / hsa-mir-182-5p / ADH4 Axis Study on the Role and Mechanism in the Occurrence and Development of Liver Cancer

Background To construct the lncRNA-miRNA-mRNA axis based on the study of molecular oncology, to explore the role and mechanism of this axis in the occurrence and development of liver cancer, so as to provide a new channel for the treatment of liver cancer. Methods Using public online databases to establish lncRNA-miRNA-mRNA ceRNA regulation network, after which using QPCR and other experimental techniques to verify that this axis is established and the mechanism of participating in the development of liver cancer. Results It can be concluded from database mining that the expressions of hsa-miR-182-5p and ADH4 are negatively correlated in hepatocellular carcinoma, and LINC01018 is also negatively correlated hsa-miR-182-5p-ADH4, indicating that LINC01018, hsa-miR-182-5p and ADH4 are strongly correlated. Constitute the regulatory axis to participate in the occurrence and development tendency of tumors. LINC01018 regulates ADH4 to inhibit LIHC cell growth by inhibiting hsa-miR-182-5p, providing a feasible theoretical basis for the treatment of HCC.The regulatory axis may also regulate the occurrence and development tendency in liver cancer by adjusting the expression levels of key proteins and phosphorylation proteins in GO and KEGG signaling pathways. Conclusions In this study, it was found that LINC01018/hsa-miR-182-5p/ADH4 ceRNA regulatory axis exists in the human body, and this axis has the possibility of becoming an immune checkpoint inhibitor for liver cancer, which is regarded as a new entry point in the diagnosis and therapy of liver cancer.

Advances in Valveless Piezoelectric Pumps

Piezoelectric pump design is regarded as a hot research topic in the microfluidic field, and has been applied in liquid cooling, precision machinery and other relevant domains. The valveless piezoelectric pump becomes an important branch of the piezoelectric pump, because it successfully avoids the problem of “pump-lagging of valve” during the valve piezoelectric pump processing. This paper summarizes the development of valveless piezoelectric pumps, and introduces some different configurations of valveless piezoelectric pumps. The structure and material of all kinds of valveless piezoelectric pumps are elaborated in detail, and also the output performance of the pump is evaluated and analyzed with the variations in flow rate and output pressure as reference. By comparing the flow of different types of valveless piezoelectric pumps, the application of valveless piezoelectric pumps is also illustrated. The development tendency of the valveless piezoelectric pump is prospected from the perspective of structure design and machining methods, which is expected to provide novel ideas and guidance for future research.

A framework of urban entrepreneurship for women breadwinners

Purpose Today, urban entrepreneurship is considered one of the vital strategies that directed cities toward self-control by reducing the unemployment rate and its arising problems, creating sustainable revenue and preparing the ground for citizens’ independence. This paper aims to present an integrated foresight framework and establish the boundary conditions for urban entrepreneurship of women breadwinners. The study explains how particular women solve workplace-specific poverty and foster urban wealth by developing startups, new businesses or ventures. Design/methodology/approach The current research uses a qualitative method and uses the grounded theory approach. Data were collected by selecting 24 outstanding women entrepreneurs using snowball sampling and semi-structured interviews in Tehran Metropolitan. Findings The results of the study reveal that the main aspects of the model of urban entrepreneurship consist of causal factors, intervening factors and contextual conditions. By shaping the policies and organizing educational plans, training courses and empowering of women, as well as the establishment of supportive units for the development, identification of the opportunities, developing protective rules, the factors as mentioned above lead to cultural, social and economic development, tendency toward entrepreneurship and development of entrepreneurship among women. Originality/value This study undertakes a first of its kind cross-disciplinary conceptual analysis at the level of how women breadwinners foster urban wealth using developing new businesses, startups or ventures. Despite the importance of urban entrepreneurship, theories for understanding the nexus of urban contexts remain underdeveloped. Therefore, there is still a theoretical gap and lack of research; hence, the current study tries to shed light on the topic and fill this gap in the body of knowledge.

Quantum Theoretical and Computational Controlling for Corral at Matter Surface

In physics and chemistry realms, the exciting quantum field would play a major role.Particularly, quantum control area should have significant and powerful development tendency. With a numerous attempts in a variety of fields, the extremely frontier area move forward to control elementary particles. Lasting effects must boost the appearing of breakthrough soonerafter. As is well known, a mount of milestone works lie on the controlling of atomic and molecules dynamics. Naturally, future researches will concentrate in quantum controlling at nucleus scale.

Quantum Theoretical and Computational Controlling for Corral at Matter Surface

In physics and chemistry realms, the exciting quantum field would play a major role.Particularly, quantum control area should have significant and powerful development tendency. With a numerous attempts in a variety of fields, the extremely frontier area move forward to control elementary particles. Lasting effects must boost the appearing of breakthrough soonerafter. As is well known, a mount of milestone works lie on the controlling of atomic and molecules dynamics. Naturally, future researches will concentrate in quantum controlling at nucleus scale.

The Advancement of 7XXX Series Aluminum Alloys for Aircraft Structures: A Review

7XXX series aluminum alloys (Al 7XXX alloys) are widely used in bearing components, such as aircraft frame, spars and stringers, for their high specific strength, high specific stiffness, high toughness, excellent processing, and welding performance. Therefore, Al 7XXX alloys are the most important structural materials in aviation. In this present review, the development tendency and the main applications of Al 7XXX alloys for aircraft structures are introduced, and the existing problems are simply discussed. Also, the heat treatment processes for improving the properties are compared and analyzed. It is the most important measures that optimizing alloy composition and improving heat treatment process are to enhance the comprehensive properties of Al 7XXX alloys. Among the method, solid solution, quenching, and aging of Al 7XXX alloys are the most significant. We introduce the effects of the three methods on the properties, and forecast the development direction of the properties, compositions, and heat treatments and the solution to the corrosion prediction problem for the next generation of Al 7XXX alloys for aircraft structures. The next generation of Al 7XXX alloys should be higher strength, higher toughness, higher damage tolerance, higher hardenability, and better corrosion resistance. It is urgent requirements to develop or invent new heat treatment regime. We should construct a novel corrosion prediction model for Al 7XXX alloys via confirming the surface corrosion environments and selecting the accurate and reliable electrochemical measurements.